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PART 721—SIGNIFICANT NEW USES OF CHEMICAL SUBSTANCES 

Section Contents

Subpart A—General Provisions 

§ 721.1 Scope and applicability. 

§ 721.3 Definitions. 

§ 721.5 Persons who must report. 

§ 721.11 Applicability determination when the specific chemical identity is confidential. 

§ 721.20 Exports and imports. 

§ 721.25 Notice requirements and procedures. 

§ 721.30 EPA approval of alternative control measures. 

§ 721.35 Compliance and enforcement. 

§ 721.40 Recordkeeping. 

§ 721.45 Exemptions. 

§ 721.47 Conditions for research and development exemption. 

Subpart B—Certain Significant New Uses 

§ 721.50 Applicability. 

§ 721.63 Protection in the workplace. 

§ 721.72 Hazard communication program. 

§ 721.80 Industrial, commercial, and consumer activities. 

§ 721.85 Disposal. 

§ 721.90 Release to water. 

§ 721.91 Computation of estimated surface water concentrations: Instructions. 

Subpart C—Recordkeeping Requirements 

§ 721.100 Applicability. 

§ 721.125 Recordkeeping requirements. 

Subpart D—Expedited Process for Issuing Significant New Use Rules for Selected Chemical Substances and 

Limitation or Revocation of Selected Significant New Use Rules 

§ 721.160 Notification requirements for new chemical substances subject to section 5(e) orders. 

§ 721.170 Notification requirements for selected new chemical substances that have completed premanufacture review. 

§ 721.185 Limitation or revocation of certain notification requirements.

Authority: 15 U.S.C. 2604, 2607, and 2625(c).

Subpart A—General Provisions 

§ 721.1 Scope and applicability. 

(a) This part identifies uses of chemical substances, except for microorganisms regulated under part 725 of this 

chapter, which EPA has determined are significant new uses under the authority of section 5(a)(2) of the Toxic 

Substances Control Act. In addition, it specifies procedures for manufacturers, importers, and processors to report 

on those significant new uses. This subpart A contains general provisions applicable to this part. subpart B of this 

part identifies generic requirements for certain significant new uses cross referenced in specific provisions of 

subpart E of this part. subpart C of this part identifies generic reporting requirements for certain significant new 

uses cross referenced in specific provisions of subpart E of this part. subpart E of this part identifies chemical 

substances and their significant new uses. 
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(b) This subpart A contains provisions governing submission and review of notices for the chemical substances 

and significant new uses identified in subpart E of this part. The provisions of this subpart A apply to the chemical 

substances and significant new uses identified in subpart E of this part, except to the extent that they are 

specifically modified or supplanted by specific requirements in subpart E of this part. In the event of a conflict 

between the provisions of this subpart A and the provisions of subpart E of this part, the provisions of subpart E 

of this part shall govern. 

(c) The provisions of part 720 of this chapter apply to this part 721. For purposes of this part 721, wherever the 

phrase “new chemical substance” appears in part 720 of this chapter, it shall mean the chemical substance subject 

to this part 721. In the event of a conflict between the provisions of part 720 of this chapter and the provisions of 

this part 721, the provisions of this part 721 shall govern. 

[53 FR 28358, July 27, 1988, as amended at 62 FR 17932, Apr. 11, 1997] 

§ 721.3 Definitions. 

The definitions in section 3 of the Act, 15 U.S.C. 2602, and §720.3 of this chapter apply to this part. In addition, 

the following definitions apply to this part: 

Acutely toxic effects A chemical substance produces acutely toxic effects if it kills within a short time period 

(usually 14 days): 

(1) At least 50 percent of the exposed mammalian test animals following oral administration of a single dose of 

the test substance at 25 milligrams or less per kilogram of body weight (LD50). 

(2) At least 50 percent of the exposed mammalian test animals following dermal administration of a single dose of 

the test substance at 50 milligrams or less per kilogram of body weight (LD50). 

(3) At least 50 percent of the exposed mammalian test animals following administration of the test substance for 8 

hours or less by continuous inhalation at a steady concentration in air at 0.5 milligrams or less per liter of air 

(LC50). 

CAS Number means Chemical Abstracts Service Registry Number assigned to a chemical substance on the 

Inventory. 

Chemical name means the scientific designation of a chemical substance in accordance with the nomenclature 

system developed by the International Union of Pure and Applied Chemistry or the Chemical Abstracts Service's 

rules of nomenclature, or a name which will clearly identify a chemical substance for the purpose of conducting a 

hazard evaluation. 

Chemical protective clothing means items of clothing that provide a protective barrier to prevent dermal contact 

with chemical substances of concern. Examples can include, but are not limited to: full body protective clothing, 

boots, coveralls, gloves, jackets, and pants. 

Commercial use means the use of a chemical substance or any mixture containing the chemical substance in a 

commercial enterprise providing saleable goods or a service to consumers (e.g., a commercial dry cleaning 

establishment or painting contractor). 

Common name means any designation or identification such as code name, code number, trade name, brand 

name, or generic chemical name used to identify a chemical substance other than by its chemical name. 
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Consumer means a private individual who uses a chemical substance or any product containing the chemical 

substance in or around a permanent or temporary household or residence, during recreation, or for any personal 

use or enjoyment. 

Consumer product means a chemical substance that is directly, or as part of a mixture, sold or made available to 

consumers for their use in or around a permanent or temporary household or residence, in or around a school, or 

in recreation. 

Customer means any person to whom a manufacturer, importer, or processor distributes any quantity of a 

chemical substance, or of a mixture containing the chemical substance, whether or not a sale is involved. 

Director of the Office of Pollution Prevention and Toxics means the Director of the EPA Office of Pollution 

Prevention and Toxics or any EPA employee delegated by the Office Director to carry out the Office Director's 

functions under this part. 

Employer means any manufacturer, importer, processor, or user of chemical substances or mixtures. 

Environmentally transformed A chemical substance is “environmentally transformed” when its chemical structure 

changes as a result of the action of environmental processes on it. 

Facility means all buildings, equipment, structures, and other stationary items which are located on a single site or 

on contiguous or adjacent sites and which are owned or operated by the same person (or by any person which 

controls, is controlled by, or under common control with such person). 

Identity means any chemical or common name used to identify a chemical substance or a mixture containing that 

substance. 

Immediate use A chemical substance is for the “immediate use” of a person if it is under the control of, and used 

only by, the person who transferred it from a labeled container and will only be used by that person within the 

work shift in which it is transferred from the labeled container. 

Impervious Chemical protective clothing is “impervious” to a chemical substance if the substance causes no 

chemical or mechanical degradation, permeation, or penetration of the chemical protective clothing under the 

conditions of, and the duration of, exposure. 

Manufacturing stream means all reasonably anticipated transfer, flow, or disposal of a chemical substance, 

regardless of physical state or concentration, through all intended operations of manufacture, including the 

cleaning of equipment. 

Metalworking fluid means a liquid of any viscosity or color containing intentionally added water and used in 

metal machining operations for the purpose of cooling, lubricating, or rust inhibition. 

MSDS means material safety data sheet, the written listing of data for the chemical substance as required under 

§721.72(c). 

NIOSH means the National Institute for Occupational Safety and Health of the U.S. Department of Health and 

Human Services. 

Non-enclosed process means any equipment system (such as an open-top reactor, storage tank, or mixing vessel) 

in which a chemical substance is manufactured, processed, or otherwise used where significant direct contact of 

the bulk chemical substance and the workplace air may occur. 
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Non-industrial use means use other than at a facility where chemical substances or mixtures are manufactured, 

imported, or processed. 

Personal protective equipment means any chemical protective clothing or device placed on the body to prevent 

contact with, and exposure to, an identified chemical substance or substances in the work area. Examples include, 

but are not limited to, chemical protective clothing, aprons, hoods, chemical goggles, face splash shields, or 

equivalent eye protection, and various types of respirators. Barrier creams are not included in this definition. 

Powder or dry solid form means a state where all or part of the substance would have the potential to become 

fine, loose, solid particles. 

Principal importer means the first importer who, knowing that a chemical substance will be imported for a 

significant new use rather than manufactured in the United States, specifies the chemical substance and the 

amount to be imported. Only persons who are incorporated, licensed, or doing business in the United States may 

be principal importers. 

Process for commercial purposes means the preparation of a chemical substance or mixture containing the 

chemical substance, after manufacture of the substance, for distribution in commerce with the purpose of 

obtaining an immediate or eventual commercial advantage for the processor. Processing of any amount of a 

chemical substance or mixture containing the chemical substance is included in this definition. If a chemical 

substance or mixture containing impurities is processed for commercial purposes, the impurities also are 

processed for commercial purposes. 

Process solely for export means to process for commercial purposes solely for export from the United States 

under the following restrictions on activity in the United States: Processing must be performed at sites under the 

control of the processor; distribution in commerce is limited to purposes of export; and the processor may not use 

the chemical substance except in small quantities solely for research and development. 

Process stream means all reasonably anticipated transfer, flow, or disposal of a chemical substance, regardless of 

physical state or concentration, through all intended operations of processing, including the cleaning of 

equipment. 

Recipient means any person who purchases or otherwise obtains a chemical substance directly from a person who 

manufacturers, imports, or processes the substance. 

Serious acute effects means human injury or human disease processes that have a short latency period for 

development, result from short-term exposure to a chemical substance, or are a combination of these factors and 

which are likely to result in death or severe or prolonged incapacitation. 

Serious chronic effects means human injury or human disease processes that have a long latency period for 

development, result from long-term exposure to a chemical substance, or are a combination of these factors and 

which are likely to result in death or severe or prolonged incapacitation. 

Short-term test indicative of carcinogenic potential means either any limited bioassay that measures tumor or 

preneoplastic induction, or any test indicative of interaction of a chemical substance with DNA (i.e., positive 

response in assays for gene mutation, chromosomal aberrations, DNA damage and repair, or cellular 

transformation). 

Short-term test indicative of the potential to cause a developmentally toxic effect means either any in vivo 

preliminary development toxicity screen conducted in a mammalian species, or any in vitro developmental 

toxicity screen, including any test system other than the intact pregnant mammal, that has been extensively 
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evaluated and judged reliable for its ability to predict the potential to cause developmentally toxic effects in intact 

systems across a broad range of chemicals or within a class of chemicals that includes the substance of concern. 

Significant adverse environmental effects means injury to the environment by a chemical substance which reduces 

or adversely affects the productivity, utility, value, or function of biological, commercial, or agricultural 

resources, or which may adversely affect a threatened or endangered species. A substance will be considered to 

have the potential for significant adverse environmental effects if it has one of the following: 

(1) An acute aquatic EC50of 1 mg/L or less. 

(2) An acute aquatic EC50of 20 mg/L or less where the ratio of aquatic vertebrate 24-hour to 48-hour EC50is 

greater than or equal to 2.0. 

(3) A Maximum Acceptable Toxicant Concentration (MATC) of less than or equal to 100 parts per billion (100 

ppb). 

(4) An acute aquatic EC50of 20 mg/L or less coupled with either a measured bioconcentration factor (BCF) equal 

to or greater than 1,000x or in the absence of bioconcentration data a log P value equal to or greater than 4.3. 

Site means a contiguous property unit. Property divided only by a public right-of-way is one site. There may be 

more than one manufacturing plant on a single site. 

Site-limited intermediate means an intermediate manufactured, processed, and used only within a site and not 

distributed in commerce other than as an impurity or for disposal. Imported intermediates cannot be “sitelimited.” 

Spray application means any method of projecting a jet of vapor of finely divided liquid onto a surface to be 

coated; whether by compressed air, hydraulic pressure, electrostatic forces, or other methods of generating a 

spray. 

Use stream means all reasonably anticipated transfer, flow, or disposal of a chemical substance, regardless of 

physical state or concentration, through all intended operations of industrial, commercial, or consumer use. 

Waters of the United States has the meaning set forth in 40 CFR 122.2. 

Work area means a room or defined space in a workplace where a chemical substance is manufactured, processed, 

or used and where employees are present. 

Workplace means an establishment at one geographic location containing one or more work areas. 

[53 FR 28358, July 27, 1988, as amended at 54 FR 31306, July 27, 1989; 58 FR 63516, Dec. 1, 1993] 

§ 721.5 Persons who must report. 

(a) The following persons must submit a significant new use notice as specified under the provisions of section 

5(a)(1)(B) of the Act, part 720 of this chapter, and §721.25: 

(1) A person who intends to manufacture, import, or process for commercial purposes a chemical substance 

identified in a specific section in subpart E of this part, and intends to engage in a significant new use of the 

substance identified in that section. 
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(2) A person who intends to manufacture, import, or process for commercial purposes a chemical substance 

identified in a specific section in subpart E of this part, and intends to distribute the substance in commerce. A 

person described in this paragraph is not required to submit a significant new use notice if that person can 

document one or more of the following as to each recipient of the substance from that person: 

(i) That the person has notified the recipient, in writing, of the specific section in subpart E of this part which 

identifies the substance and its designated significant new uses. 

(ii) That the recipient has knowledge of the specific section in subpart E of this part which identifies the substance 

and its designated significant new uses. 

(iii) That the recipient cannot undertake any significant new use described in the specific section in subpart E of 

this part. 

(b) A person described in paragraph (a)(2) of this section must submit a significant new use notice if that person 

has knowledge at the time of commercial distribution of the substance identified in the specific section in subpart 

E of this part that a recipient intends to engage in a designated significant new use of that substance without 

submitting a notice under this part. 

(c) A person who processes a chemical substance identified in a specific section in subpart E of this part for a 

significant new use of that substance is not required to submit a significant new use notice if that person can 

document each of the following: 

(1) That the person does not know the specific chemical identity of the chemical substance being processed. 

(2) That the person is processing the chemical substance without knowledge that the substance is identified in 

subpart E of this part. 

(d)(1) If at any time after commencing distribution in commerce of a chemical substance identified in a specific 

section in subpart E of this part a person described in paragraph (a)(2) of this section has knowledge that a 

recipient of the substance is engaging in a significant new use of that substance designated in that section without 

submitting a notice under this part, the person is required to cease supplying the chemical substance to that 

recipient and to submit a significant new use notice for that chemical substance and significant new use, unless 

the person is able to document each of the following: 

(i) That the person has notified the recipient and EPA enforcement authorities (at the address in paragraph 

(d)(1)(iii) of this section), in writing within 15 working days of the time the person develops knowledge that the 

recipient is engaging in a significant new use, that the recipient is engaging in a significant new use without 

submitting a significant new use notice. 

(ii) That, within 15 working days of notifying the recipient as described in paragraph (d)(1)(i) of this section, the 

person received from the recipient, in writing, a statement of assurance that the recipient is aware of the terms of 

the applicable section in subpart E of this part and will not engage in the significant new use. 

(iii) That the person has promptly provided EPA enforcement authorities with a copy of the recepient's statement 

of assurance described in paragraph (d)(1)(ii) of this section. The copy must be sent to the Office of Enforcement 

and Compliance Assurance, Office of Compliance (2224A), U.S. Environmental Protection Agency, Ariel Rios, 

1200 Pennsylvania Ave., N.W., Washington, DC, 20044. 

(2) If EPA notifies the manufacturer, importer, or processor that the recipient is engaging in a significant new use 

after providing the statement of assurance described in paragraph (d)(1)(ii) of this section and without submitting 

a notice under this part, the manufacturer, importer, or processor shall immediately cease distribution to that 
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recipient until the manufacturer, importer, or processor or the recipient has submitted a significant new use notice 

under this part and the notice review period has ended. 

(3) If, after receiving a statement of assurance from a recipient under paragraph (d)(1)(ii) of this section, a 

manufacturer, importer, or processor has knowledge that the recipient is engaging in a significant new use without 

submitting a notice under this part, the manufacturer, importer, or processor must immediately cease distributing 

the substance to that recipient and notify EPA enforcement authorities at the address identified in paragraph 

(d)(1)(iii) of this section. The manufacturer, importer, or processor may not resume distribution to that recipient 

until any one of the following has occurred: 

(i) The manufacturer, importer, or processor has submitted a significant new use notice under this part and the 

notice review period has ended. 

(ii) The recipient has submitted a significant new use notice under this part and the notice review period has 

ended. 

(iii) The manufacturer, importer, or processor has received notice from EPA enforcement authorities that it may 

resume distribution to that recipient. 

(e) Any significant new use notice relating to import of a substance must be submitted by the principal importer. 

[53 FR 28359, July 27, 1988, as amended at 60 FR 34464, July 3, 1995] 

§ 721.11 Applicability determination when the specific chemical identity is confidential. 

(a) A person who intends to manufacture, import, or process a chemical substance which is described by a generic 

chemical name is subpart E of this part may ask EPA whether the substance is subject to the requirements of this 

part. EPA will answer such an inquiry only if EPA determines that the person has a bona fide intent to 

manufacture, import, or process the chemical substance for commercial purposes. 

(b) To establish a bona fide intent to manufacture, import, or process a chemical substance, the person who 

intends to manufacture, import, or process the chemical substance must submit the following information in 

writing to the Document Control Office (DCO) (7407M), Office of Pollution Prevention and Toxics (OPPT), 

Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460–0001, ATTN: SNUR 

Bonafide submissions. 

(1) The specific chemical identity of the chemical substance that the person intends to manufacture, import, or 

process. 

(2) A signed statement that the person intends to manufacture, import, or process the chemical substance for 

commercial purposes. 

(3) A description of the research and development activities conducted to date, and the purpose for which the 

person will manufacture, import, or process the chemical substance. 

(4) An elemental analysis. 

(5) Either an X-ray diffraction pattern (for inorganic substances), a mass spectrum (for most other substances), or 

an infrared spectrum of the particular chemical substance, or, if such data do not resolve uncertainties with respect 

to the identity of the chemical substance, additional or alternative spectra or other data to identify the substance. 
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(c) If an importer or processor cannot provide all the information required in paragraph (b) of this section because 

it is claimed as confidential business information by the importer's or processor's manufacturer or supplier, the 

manufacturer or supplier may supply the information directly to EPA. 

(d) EPA will review the information submitted by the manufacturer, importer, or processor under paragraph (b) of 

this section to determine whether than person has shown a bona fide intent to manufacture, import, or process the 

chemical substance. If necessary, EPA will compare this information either to the information requested for the 

confidential chemical substance under §710.7(e)(2)(v) of this chapter or the information requested under 

§720.85(b)(3)(iii) of this chapter. 

(e) If the manufacturer, importer, or processor has shown a bona fide intent to manufacture, import, or process the 

substance and has provided sufficient unambiguous chemical identity information to enable EPA to make a 

conclusive determination as to the identity of the substance, EPA will inform the manufacturer, importer, or 

processor whether the chemical substance is subject to this part and, if so, which section in subpart E of this part 

applies. 

(f) A disclosure to a person with a bona fide intent to manufacture, import, or process a particular chemical 

substance that the substance is subject to this part will not be considered public disclosure of confidential business 

information under section 14 of the Act. 

(g) EPA will answer an inquiry on whether a particular chemical substance is subject to this part within 30 days 

after receipt of a complete submission under paragraph (b) of this section. 

[53 FR 28359, July 27, 1988, as amended at 60 FR 34464, July 3, 1995; 71 FR 33641, June 12, 2006] 

§ 721.20 Exports and imports. 

Persons who intend to export a chemical substance identified in subpart E of this part, or in any proposed rule 

which would amend subpart E of this part, are subject to the export notification provisions of section 12(b) of the 

Act. The regulations that interpret section 12(b) appear at 40 CFR part 707. Persons who import a substance 

identified in a specific section in subpart E of this part are subject to the import certification requirements under 

section 13 of the Act, which are codified at 19 CFR 12.118 through 12.127 and 127.28. The EPA policy in 

support of the import certification requirements appears at 40 CFR part 707. 

[53 FR 28360, July 27, 1988] 

§ 721.25 Notice requirements and procedures. 

(a) Each person who is required to submit a significant new use notice under this part must submit the notice at 

least 90 calendar days before commencing manufacture, import, or processing of a chemical substance identified 

in subpart E of this part for a significant new use. The submitter must comply with any applicable requirement of 

section 5(b) of the Act, and the notice must include the information and test data specified in section 5(d)(1) of the 

Act. The notice must be submitted on EPA Form 7710–25, and must comply with the requirements of part 720 of 

this chapter, except to the extent that they are inconsistent with this part 721. 

(b) If two or more persons are required to submit a significant new use notice for the same chemical substance and 

significant new use identified in subpart E of this part, they may submit a joint notice to EPA. Persons submitting 

a joint notice must individually complete the certification section of part I of the required notification form. 

Persons who are required to submit individually, but elect to submit jointly, remain individually liable for the 

failure to submit required information which is known to or reasonably ascertainable by them and test data in their 

possession or control. 
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(c) EPA will process the notice in accordance with the procedures of part 720 of this chapter, except to the extent 

they are inconsistent with this part. 

(d) Any person submitting a significant new use notice in response to the requirements of this part 721 shall not 

manufacture, import, or process a chemical substance identified in subpart E of this part for a significant new use 

until the notice review period, including all extensions and suspensions, has expired. 

[53 FR 28360, July 27, 1988, as amended at 60 FR 16311, Mar. 29, 1995; 75 FR 787, Jan. 6, 2010] 

§ 721.30 EPA approval of alternative control measures. 

(a) In certain sections of subpart E of this part, significant new uses for the identified substances are described as 

the failure to establish and implement programs providing for the use of either: specific measures to control 

worker exposure to or release of substances which are identified in such sections, or alternative measures to 

control worker exposure or environmental release which EPA has determined provide substantially the same 

degree of protection as the specified control measures. Persons who manufacture, import, or process a chemical 

substance identified in such sections and who intend to employ alternative measures to control worker exposure 

or environmental release must submit a request to EPA for a determination of equivalency before commencing 

manufacture, import, or processing involving the alternative control measures. 

(b) Persons submitting a request for a determination of equivalency to EPA under this part, unless allowed by 40 

CFR 720.40(a)(2)(i), (ii), or (iii), must submit the request to EPA via EPA's Central Data Exchange (CDX) using 

EPA-provided e-PMN software in the manner set forth in 40 CFR 720.40(a)(2)(i). See 40 CFR 720.40(a)(2)(ivii) 

for information on how to obtain e-PMN software. Support documents related to these requests must be submitted 

in the manner set forth in 40 CFR 720.40(c)(a)(2)(i), (ii), or (iii). If submitted by paper, requests must be 

submitted either via U.S. mail to the Document Control Office (DCO) (7407M), Office of Pollution Prevention 

and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460–0001; 

ATTN: SNUR Equivalency Determination or submitted via courier to the Environmental Protection Agency, 

OPPT Document Control Office (DCO), EPA East Bldg., 1201 Constitution Ave., NW., Rm. 6428, Washington, 

DC 20004; ATTN: SNUR Equivalency Determination. Optical discs containing electronic requests must be 

submitted by courier to the Environmental Protection Agency, OPPT Document Control Office (DCO), EPA East 

Bldg., 1201 Constitution Ave., NW., Rm. 6428, Washington, DC 20004; ATTN: SNUR Equivalency 

Determination. A request for a determination of equivalency must contain: 

(1) The name of the submitter. 

(2) The specific chemical identity of the substance. 

(3) The citation for the specific section in subpart E of this part which pertains to the substance for which the 

request is being submitted. 

(4) A detailed description of the activities involved. 

(5) The specifications of the alternative worker exposure control measures or environmental release control 

measures. 

(6) An analysis justifying why such alternative control measures provide substantially the same degree of 

protection as the specific control measures identified in the specific section in subpart E of this part which 

pertains to the substance for which the request is being submitted. 

(7) The data and information described in §720.50 (a) and (b) of this chapter unless such data and information 

have already been submitted to the Office of Pollution Prevention and Toxics, EPA. 
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(c) Requests for determinations of equivalency will be reviewed by EPA within 45 days. Determinations under 

this paragraph will be made by the Director, Office of Pollution Prevention and Toxics, or designee. Notice of the 

results of such determinations will be mailed to the submitter. 

(d) If EPA notifies the submitter under paragraph (c) of this section that EPA has determined that the alternative 

control measures provide substantially the same degree of protection as the specified control measures identified 

in the specified section of subpart E of this part which pertains to the substance for which the request is being 

submitted, the submitter may commence manufacture, import, or processing in accordance with the specifications 

for alternative worker exposure control measures or environmental release control measures identified in the 

submitter's request, and may alter any corresponding notification to workers to reflect such alternative controls. 

Deviations from the activities described in the EPA notification constitute a significant new use and are subject to 

the requirements of this part. 

[53 FR 28360, July 27, 1988, as amended at 60 FR 34464, July 3, 1995; 71 FR 33641, June 12, 2006; 75 FR 787, 

Jan. 6, 2010] 

§ 721.35 Compliance and enforcement. 

(a) Failure to comply with any provision of this part is a violation of section 15(1) of the Act (15 U.S.C. 2614). 

(b) Using for commercial purposes a chemical substance which a person knew or had reason to know was 

manufactured, imported, or processed in violation of this part is a violation of section 15(2) of the Act (15 U.S.C. 

2614). 

(c) Failure or refusal to permit access to or copying of records, as required by section 11 of the Act, is a violation 

of section 15(3) of the Act (15 U.S.C. 2614). 

(d) Failure or refusal to permit entry or inspection, as required by section 11 of the Act, is a violation of section 

15(4) of the Act. 

(e) Violators of the Act or of this part may be subject to the civil and criminal penalties in section 16 of the Act 

(15 U.S.C. 2615) for each violation. The submission of false or misleading information in connection with the 

requirement of any provision of this part may subject persons to penalties calculated as if they never filed a 

notice. 

(f) Under the authority of sections 7 and 17 of the Act, EPA may: 

(1) Seek to enjoin the manufacture, import, or processing of a chemical substance in violation of this part. 

(2) Act to seize any chemical substance which is being manufactured, imported, or processed in violation of this 

part. 

(3) Take any other appropriate action. 

[53 FR 28361, July 27, 1988] 

§ 721.40 Recordkeeping. 

Any person subject to the requirements of this part must retain documentation of information contained in that 

person's significant new use notice. This documentation must be maintained for a period of 5 years from the date 

of the submission of the significant new use notice. 
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[53 FR 28361, July 27, 1988] 

§ 721.45 Exemptions. 

The persons identified in §721.5 are not subject to the notification requirements of §721.25 for a chemical 

substance identified in subpart E of this part, unless otherwise specified in a specific section in subpart E, if: 

(a) The person has applied for and has been granted an exemption for test marketing the substance for a 

significant new use identified in subpart E of this part in accordance with section 5(h)(1) of the Act and §720.38 

of this chapter. 

(b) The person manufactures, imports, or processes the substance for a significant new use identified in subpart E 

of this part in small quantities solely for research and development in accordance with §721.47. 

(c) The person has applied for and been granted an exemption under section 5(h)(5) of the Act. 

(d) The person manufactures, imports, or processes the substance only as an impurity. 

(e) The person manufactures, imports, or processes the substance only as a byproduct which is used only by 

public or private organizations that (1) burn it as a fuel, (2) dispose of it as a waste, including in a landfill or for 

enriching soil, or (3) extract component chemical substances from it for commercial purposes. 

(f) The person imports or processes the substance as part of an article. 

(g) The person manufactures or processes the substance solely for export and, when distributing the substance in 

commerce, labels the substance in accordance with section 12(a)(1)(B) of the Act. 

(h) The person submits a significant new use notice for the substance prior to the promulgation date of the section 

in subpart E of this part which identifies the substance, and the person receives written notification of compliance 

from EPA prior to the effective date of such section. The notice submitter must comply with any applicable 

requirement of section 5(b) of the Act. The notice must include the information and test data specified in section 

5(d)(1) of the Act and must be submitted on the notice form in Appendix A to part 720 of this chapter. For 

purposes of this exemption, the specific section in subpart E of this part which identifies the substance and 

§§721.1, 721.3, 721.11, 721.35, and 721.40 apply; after the effective date of the section in subpart E of this part 

which identifies the substance, §721.5 applies and §721.20 continues to apply. EPA will provide the notice 

submitter with written notification of compliance only if one of the following occurs: 

(1) EPA is unable to make the finding that the activities described in the significant new use notice will or may 

present an unreasonable risk of injury to health or the environment under reasonably foreseeable circumstances. 

(2) EPA and the person negotiate a consent order under section 5(e) of the Act, such order to take effect on the 

effective date of the section in subpart E of this part which identifies the substance. 

(i) The person is operating under the terms of a consent order issued under section 5(e) of the Act applicable to 

that person. If a provision of such section 5(e) order is inconsistent with a specific significant new use identified 

in subpart E of this part, abiding by the provision of the section 5(e) order exempts the person from submitting a 

significant new use notice for that specific significant new use. 

[53 FR 28361, July 27, 1988] 

§ 721.47 Conditions for research and development exemption. 
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(a) A person who manufactures, imports, or processes a chemical substance identifies in subpart E of this part for 

a significant new use identified in subpart E of this part is not subject to the notification requirements of §721.25 

if the following conditions are met: 

(1) The person manufactures, imports, or processes the substance for the significant new use in small quantities 

solely for research and development. 

(2) The manufacturer, importer, or processor notifies all persons in its employ or to whom it directly distributes 

the chemical substance, who are engaged in experimentation, research, or analysis on the chemical substance, 

including the manufacture, processing, use, transport, storage, and disposal of the substance associated with 

research and development activities, of any risk to health, identified under paragraph (b) of this section, which 

may be associated with the substance. The notification must be made in accordance with paragraph (c) of this 

section. 

(3) The chemical substance is used by, or directly under the supervision of, a technically qualified individual. 

(b)(1) To determine whether notification under paragraph (a)(2) of this section is required, the manufacturer, 

importer, or processor must review and evaluate the following information to determine whether there is reason to 

believe there is any risk to health which may be associated with the chemicals substance: 

(i) Information in its possession or control concerning any significant adverse reaction by persons exposed to the 

chemical substance which may reasonably be associated with such exposure. 

(ii) Information provided to the manufacturer, importer, or processor by a supplier or any other person concerning 

a health risk believed to be associated with the substance. 

(iii) Health and environmental effects data in its possession or control concerning the substance. 

(iv) Information on health effects which accompanies any EPA rule or order issued under section 4, 5, or 6 of the 

Act that applies to the substance and of which the manufacturer, importer, or processor has knowledge. 

(2) When the research and development activity is conducted solely in a laboratory and exposure to the chemical 

substance is controlled through the implementation of prudent laboratory practices for handling chemical 

substances of unknown toxicity, and any distribution, except for purposes of disposal, is to other such laboratories 

for further research and development activity, the information specified in paragraph (b)(1) of this section need 

not be reviewed and evaluated. (For purposes of this paragraph (b)(2), a laboratory is defined as a contained 

research facility where relatively small quantities of chemical substances are used on a pro-production basis, and 

where activities involve the use of containers for reactions, transfers, and other handling of substances designed to 

be easily manipulated by a single individual). 

(c)(1) The manufacturer, importer, or processor must notify the persons identified in paragraph (a)(2) of this 

section by means of a container labeling system, conspicuous placement of notices in areas where exposure may 

occur, written notification to each person potentially exposed, or any other method of notification which 

adequately informs persons of health risks which the manufacturer, importer, or processor has reason to believe 

may be associated with the substance, as determined under paragraph (b)(1) of this section. 

(2) If the manufacturer, importer, or processor distributes a chemical substance manufactured, imported, or 

processed under this section to persons not in its employ, the manufacturer, importer, or processor must in written 

form: 

(i) Notify those persons that the substance is to be used only for research and development purposes. 
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(ii) Provide the notice of health risks specified in paragraph (c)(1) of this section. 

(3) The adequacy of any notification under this section is the responsibility of the manufacturer, importer, or 

processor. 

(d) Quantities of the chemical substance, or of mixtures or articles containing the chemical substance, remaining 

after completion of research and development activities may be: 

(1) Disposed of as a waste in accordance with applicable Federal, State, and local regulations, to the extent the 

disposal activity is not identified as a significant new use for the substance in subpart E of this part, or 

(2) Used for a commercial purpose, to the extent the use is not identified as a significant new use of the substance 

in subpart E of this part. 

(e)(1) Persons who manufacture, import, or process a chemical substance under this section must retain the 

following records: 

(i) Copies of or citations to information reviewed and evaluated under paragraph (b)(1) of this section to 

determine the need to make any notification of risk. 

(ii) Documentation of the nature and method of notification under paragraph (c)(1) of this section including 

copies of any labels or written notices used. 

(iii) Documentation of prudent laboratory practices used instead of notification and evaluation under paragraph 

(b)(2) of this section. 

(iv) The names and addresses of any persons other than the manufacturer, importer, or processor to whom the 

substance is distributed, the identity of the substance, the amount distributed, and copies of the notifications 

required under paragraph (c)(2) of this section. 

(2) [Reserved] 

[53 FR 28361, July 27, 1988, as amended at 58 FR 34204, June 23, 1993] 

Subpart B—Certain Significant New Uses 

Source: 54 FR 31308, July 27, 1989, unless otherwise noted.

§ 721.50 Applicability. 

This subpart B identifies certain significant new uses of chemical substances identified in subpart E of this part. 

The provisions of this subpart B apply only when referenced as applying to a chemical substance identified in 

subpart E of this part. 

§ 721.63 Protection in the workplace. 

(a) Whenever a substance is identified in subpart E of this part as being subject to this section, a significant new 

use of the substance is any manner or method of manufacturing, importing, or processing associated with any use 

of the substance without establishing a program whereby: 
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(1) Each person who is reasonably likely to be dermally exposed in the work area to the chemical substance 

through direct handling of the substance or through contact with equipment on which the substance may exist, or 

because the substance becomes airborne in the form listed in paragraph (a)(6) of this section, and cited in subpart 

E of this part for the chemical substance, is provided with, and is required to wear, personal protective equipment 

that provides a barrier to prevent dermal exposure to the substance in the specific work area where it is selected 

for use. Each such item of personal protective equipment must be selected and used in accordance with 29 CFR 

1910.132 and 1910.133. 

(2) In addition to any other personal protective equipment selected in paragraph (a)(1) of this section, the 

following items are required: 

(i) Gloves. 

(ii) Full body chemical protective clothing. 

(iii) Chemical goggles or equivalent eye protection. 

(iv) Clothing which covers any other exposed areas of the arms, legs, and torso. Clothing provided under this 

paragraph need not be tested or evaluated under the requirements of paragraph (a)(3) of this section. 

(3) The employer is able to demonstrate that each item of chemical protective clothing, including gloves, selected 

provides an impervious barrier to prevent dermal exposure during normal and expected duration and conditions of 

exposure within the work area by any one or a combination of the following: 

(i) Testing the material used to make the chemical protective clothing and the construction of the clothing to 

establish that the protective clothing will be impervious for the expected duration and conditions of exposure. The 

testing must subject the chemical protective clothing to the expected conditions of exposure, including the likely 

combinations of chemical substances to which the clothing may be exposed in the work area. 

(ii) Evaluating the specifications from the manufacturer or supplier of the chemical protective clothing, or of the 

material used in construction of the clothing, to establish that the chemical protective clothing will be impervious 

to the chemical substance alone and in likely combination with other chemical substances in the work area. 

(4) Each person who is reasonably likely to be exposed to the chemical substance by inhalation in the work area 

in one or more of the forms listed in paragraph (a)(6) of this section and cited in subpart E of this part for the 

chemical substance, is provided with, and is required to wear, at a minimum, a NIOSH- approved respirator from 

one of the categories listed in paragraph (a)(5) of this section, and the respirator is used in accordance with 29 

CFR 1910.134 and 30 CFR part 11. 

(5) The following NIOSH approved respirators meet the minimum requirements for paragraph (a)(4) of this 

section: 

(i) Category 19C Type C supplied-air respirator operated in pressure demand or other positive pressure mode and 

equipped with a full facepiece. 

(ii) Category 19C Type C supplied-air respirator operated in pressure demand or continuous flow mode and 

equipped with a tight-fitting facepiece. 

(iii) Category 19C Type C supplied-air respirator operated in pressure demand or continuous flow mode and 

equipped with a hood or helmet or tight-fitting facepiece. 
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(iv) Category 21C air-purifying respirator equipped with a full facepiece and high efficiency particulate filters. 

(v) Category 21C powered air-purifying respirator equipped with a tight-fitting facepiece and high efficiency 

particulate filters. 

(vi) Category 21C powered air-purifying respirator equipped with a loose-fitting hood or helmet and high 

efficiency particulate filters. 

(vii) Category 21C air-purifying respirator equipped with a high efficiency particulate filter including disposable 

respirators. 

(viii) Category 23C air-purifying respirator equipped with a full facepiece and combination cartridges approved 

for paints, lacquers, and enamels. (Approval label may preclude use for some paints, lacquers, or enamels.) 

(ix) Category 23C powered air-purifying respirator equipped with a tight-fitting facepiece and combination 

cartridges approved for paints, lacquers, and enamels. (Approval label may preclude use for some paints, lacquers, 

or enamels.) 

(x) Category 23C powered air-purifying respirator equipped with a loose-fitting hood or helmet and combination 

cartridges approved for paints, lacquers, and enamels. (Approval label may preclude use for some paints, lacquers, 

or enamels.) 

(xi) Category 23C air-purifying respirator equipped with combination cartridges approved for paints, lacquers, 

and enamels, including disposable respirators. (Approval label may preclude use for some paints, lacquers, or 

enamels.) 

(xii) Category 23C air-purifying respirator equipped with a full facepiece and organic gas/vapor cartridges. 

(xiii) Category 23C powered air-purifying respirator equipped with a tight-fitting facepiece and organic gas/vapor 

cartridges. 

(xiv) Category 23C powered air-purifying respirator equipped with a loose-fitting hood or helmet and organic 

gas/vapor cartridges. 

(xv) Category 23C air-purifying respirator equipped with organic gas/vapor cartridges, including disposable 

respirators. 

(6) When cited in subpart E of this part for a substance, the following airborne form(s) of the substance apply to 

paragraphs (a) (1) and (4) of this section: 

(i) Dust. 

(ii) Mist. 

(iii) Fume. 

(iv) Smoke. 

(v) Vapor. 

(vi) Gas. 
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(b) If a substance identified in subpart E of this part is present in the work area only as a mixture, an employer is 

exempt from the provisions of this section if the concentration of the substance in the mixture does not exceed a 

concentration set in subpart E of this part. The exemption does not apply if the employer has reason to believe that 

during intended use or processing in the work area, the substance in the mixture may be concentrated above the 

level set in subpart E of this part. 

(c)(1) If at any time after commencing distribution in commerce of a chemical substance that is identified in 

subpart E of this part as subject to this section, the person has knowledge that a recipient of the substance is 

engaging in an activity that is not consistent with the implementation of a program specified in paragraph (a) of 

this section, the person is considered to have knowledge that the recipient is engaging in a significant new use and 

is required to follow the procedures in §721.5(d) unless the person is able to document the following: 

(i) That the person has notified the recipient in writing within 15 working days of the time the person first has 

knowledge that the recipient is engaging in an activity that is not consistent with the implementation of a program 

specified in paragraph (a) of this section, and that the person has knowledge of the failure of implementation. 

(ii) That within 15 working days of notifying the recipient that the recipient is engaging in an activity that is not 

consistent with the implementation of a program specified in paragraph (a) of this section the person has received 

from the recipient, in writing, a statement of assurance that the recipient has established the program required 

under paragraph (a) of this section, and will take appropriate measures to avoid activities that are inconsistent 

with implementation of the program required under paragraph (a) of this section. 

(2) If, after receiving a statement of assurance from a recipient under paragraph (c)(1)(ii) of this section, a 

manufacturer, importer, or processor has knowledge that the recipient is engaging in an activity that is not 

consistent with the implementation of the program specified in paragraph (a) of this section, that person is 

considered to have knowledge that the person is engaging in a significant new use and is required to follow the 

procedures in §721.5(d). 

§ 721.72 Hazard communication program. 

Whenever a substance is identified in subpart E of this part as being subject to this section, a significant new use 

of that substance is any manner or method of manufacture, import, or processing associated with any use of that 

substance without establishing a hazard communication program as described in this section. 

(a) Written hazard communication program. Each employer shall develop and implement a written hazard 

communication program for the substance in each workplace. The written program will, at a minimum, describe 

how the requirements of this section for labels, MSDSs, and other forms of warning material will be satisfied. The 

employer must make the written hazard communication program available, upon request, to all employees, 

contractor employees, and their designated representatives. The employer may rely on an existing hazard 

communication program, including an existing program established under the Occupational Health and Safety 

Administration (OSHA) Hazard Communication Standard (29 CFR 1900.1200), to comply with this paragraph 

provided that the existing hazard communication program satisfies the requirements of this paragraph. The written 

program shall include the following: 

(1) A list of each substance identified in subpart E of this part as subject to this section known to be present in the 

work area. The list must be maintained in the work area and must use the identity provided on the appropriate 

MSDS for each substance required under paragraph (c) of this section. The list may be compiled for the 

workplace or for individual work areas. 

(2) The methods the employer will use to inform employees of the hazards of non-routine tasks involving the 

substance, for example, the cleaning of reactor vessels, and the hazards associated with the substance contained in 

unlabeled pipes in their work area. 
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(3) The methods the employer will use to inform contractors of the presence of the substance in the employer's 

workplace and of the provisions of this part applicable to the substance if employees of the contractor work in the 

employer's workplace and are reasonably likely to be exposed to the substance while in the employer's workplace. 

(b) Labeling. (1) Each employer shall ensure that each container of the substance in the workplace is labeled in 

accordance with this paragraph (b)(1). 

(i) The label shall, at a minimum, contain the following information: 

(A) A statement of health hazard(s) and precautionary measure(s) for the substance, if any, identified in subpart E 

of this part or by the employer. 

(B) The identity by which the substance may be commonly recognized. 

(C) A statement of environmental hazard(s) and precautionary measure(s) for the substance, if any, identified in 

subpart E of this part or by the employer. 

(D) A statement of exposure and precautionary measure(s), if any, identified in subpart E of this part or by the 

employer. 

(ii) The employer may use signs, placards, process sheets, batch tickets, operating procedures, or other such 

written materials in lieu of affixing labels to individual stationary process containers, as long as the alternative 

method identifies the containers to which it is applicable and conveys information specified by paragraph (b)(1)(i) 

of this section. Any written materials must be readily accessible to the employees in their work areas throughout 

each work shift. 

(iii) The employer need not label portable containers into which the substance is transferred from labeled 

containers, and which are intended only for the immediate use of the employee who performs the transfer. 

(iv) The employer shall not remove or deface an existing label on incoming containers of the substance unless the 

container is immediately relabeled with the information specified in paragraph (b)(1)(i) of this section. 

(2) Each employer shall ensure that each container of the substance leaving its workplace for distribution in 

commerce is labeled in accordance with this paragraph. 

(i) The label shall, at a minimum, contain the following information: 

(A) The information required under paragraph (b)(1)(i) of this section. 

(B) The name and address of the manufacturer or a responsible party who can provide additional information on 

the substance for hazard evaluation and any appropriate emergency procedures. 

(ii) The label shall not conflict with the requirements of the Hazardous Materials Transportation Act (18 U.S.C. 

1801 et. seq.) and regulations issued under that Act by the Department of Transportation. 

(3) The label, or alternative forms of warning, shall be legible and prominently displayed. 

(4) The label, or alternative forms of warning, shall be in English; however, the information may be repeated in 

other languages. 
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(5) If the label or alternative form of warning is to be applied to a mixture containing a substance identified in 

subpart E of this part as subject to this section in combination with another substance identified in subpart E of 

this part and/or a substance defined as a “hazardous chemical” under the Occupational Safety and Health 

Administration (OSHA) Hazard Communication Standard (29 CFR 1900.1200), the employer may prescribe on 

the label, MSDS, or alternative form of warning, the measures to control worker exposure or environmental 

release which the employer determines provide the greatest degree of protection. However, should these control 

measures differ from the applicable measures required under subpart E of this part, the employer must seek a 

determination of equivalency for such alternative control measures pursuant to §721.30 before prescribing them 

under this paragraph. 

(c) Material safety data sheets. (1) Each employer must obtain or develop a MSDS for the substance. 

(2) Each MSDS shall contain, at a minimum, the following information: 

(i) The identity used on the container label of the substance under this section, and, if not claimed confidential, the 

chemical and common name of the substance. If the chemical and common name are claimed confidential, a 

generic chemical name must be used. 

(ii) Physical and chemical characteristics of the substance known to the employer (such as vapor pressure, flash 

point). 

(iii) The physical hazards of the substance known to the employer, including the potential for fire, explosion, and 

reactivity. 

(iv) The potential human and environmental hazards as specified in subpart E of this part for the substance. 

(v) Signs and symptoms of exposure, and any medical conditions which are expected to be aggravated by 

exposure to the substance known to the employer. 

(vi) The primary routes of exposure to the substance. 

(vii) Precautionary measures to control worker exposure and/or environmental release identified in subpart E of 

this part for the substance, or alternative control measures which EPA has determined under §721.30 provide 

substantially the same degree of protection as the identified control measures. 

(viii) Any generally applicable precautions for safe handling and use of the substance which are known to the 

employer, including appropriate hygienic practices, protective measures during repair and maintenance of 

contaminated equipment, and procedures for response to spills and leaks. 

(ix) Any generally applicable control measures which are known to the employer, such as appropriate engineering 

controls, work practices, or personal protective equipment. 

(x) Emergency first aid procedures known to the employer. 

(xi) The date of preparation of the MSDS or of its last revision. 

(xii) The name, address, and telephone number of the individual preparing or distributing the MSDS, or a 

responsible party who can provide additional information on the substance for hazard evaluation and any 

appropriate emergency procedures. 
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(3) If no relevant information is found or known for any given category on the MSDS, the employer must mark 

the MSDS to indicate that no applicable information was found. 

(4) Where multiple mixtures containing the substance have similar compositions (i.e., the chemical ingredients are 

essentially the same, but the specific composition varies from mixture to mixture) and similar hazards, the 

employer may prepare one MSDS to apply to all of these multiple mixtures. 

(5) If the employer becomes aware of any significant new information regarding the hazards of the substance or 

ways to protect against the hazards, this new information must be added to the MSDS within 3 months from the 

time the employer becomes aware of the new information. If the substance is not currently being manufactured, 

imported, processed, or used in the employer's workplace, the employer must add the new information to the 

MSDS before the substance is reintroduced into the workplace. 

(6) The employer must ensure that persons receiving the substance from the employer are provided an appropriate 

MSDS with their initial shipment and with the first shipment after an MSDS is revised. The employer may either 

provide the MSDS with the shipped containers or send it to the person prior to or at the time of shipment. 

(7) The employer must maintain a copy of the MSDS in its workplace, and must ensure that it is readily accessible 

during each work shift to employees when they are in their work areas. 

(8) The MSDS may be kept in any form, including as operating procedures, and may be designed to cover groups 

of substances in a work area where it may be more appropriate to address the potential hazards of a process rather 

than individual substances. However, in all cases, the required information must be provided for each substance 

and must be readily accessible during each work shift to employees when they are in their work areas. 

(9) The MSDS must be printed in English; however, the information may be repeated in other languages. 

(d) Employee information and training. Each employer must ensure that employees are provided with information 

and training on the substance identified in subpart E of this part. This information and training must be provided 

at the time of each employee's initial assignment to a work area containing the substance and whenever the 

substance subject to this section is introduced into the employee's work area for the first time. 

(1) Information provided to employees under this paragraph shall include: 

(i) The requirements of this section. 

(ii) Any operations in the work area where the substance is present. 

(iii) The location and availability of the written hazard communication program required under paragraph (a) of 

this section, including the list of substances identified in subpart E of this part as subject to this section, and 

MSDSs required by paragraph (c) of this section. 

(2) Training provided to employees shall include: 

(i) Methods and observations that may be used to detect the presence or release of the substance in or from an 

employee's work area (such as monitoring conducted by the employer, continuous monitoring devices, visual 

appearance, or odor of the substance when being released). 

(ii) The potential human health and environmental hazards of the substance as specified in subpart E of this part. 
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(iii) The measures employees can take to protect themselves and the environment from the substance, including 

specific procedures the employer has implemented to protect employees and the environment from exposure to 

the substance, including appropriate work practices, emergency procedures, personal protective equipment, 

engineering controls, and other measures to control worker exposure and/or environmental release required under 

subpart E of the part, or alternative control measures which EPA has determined under §721.30 provide 

substantially the same degree of protection as the specified control measures. 

(iv) The requirements of the hazard communication program developed by the employer under this section, 

including an explanation of the labeling system and the MSDS required by this section and guidance on obtaining 

and using appropriate hazard information. 

(e) Low concentrations in mixtures. If a substance identified in subpart E of this part is present in the work area 

only as a mixture, an employer is exempt from the provisions of this section if the concentration of the substance 

in the mixture does not exceed a concentration set in subpart E of this part. The exemption does not apply if the 

employer has reason to believe that during intended use or processing in the work area, the substance in the 

mixture may be concentrated above the level set in subpart E of this part. 

(f) Existing hazard communication program. The employer need not take additional actions if existing programs 

and procedures satisfy the requirements of this section. 

(g) Human health, environmental hazard, exposure, and precautionary statements. Whenever referenced in 

subpart E of this part for a substance, the following human health and environmental hazard, exposure, and 

precautionary statements shall appear on each label as specified in paragraph (b) of this section and the MSDS as 

specified in paragraph (c) of this section. Additional statements may be included as long as they are true and do 

not alter the meaning of the required statements. 

(1) Human health hazard statements: This substance may cause: 

(i) Skin irritation. 

(ii) Respiratory complications. 

(iii) Central nervous system effects. 

(iv) Internal organ effects. 

(v) Birth defects. 

(vi) Reproductive effects. 

(vii) Cancer. 

(viii) Immune system effects. 

(ix) Developmental effects. 

(2) Human health hazard precautionary statements: When using this substance: 

(i) Avoid skin contact. 

(ii) Avoid breathing substance. 
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(iii) Avoid ingestion. 

(iv) Use respiratory protection. 

(v) Use skin protection. 

(3) Environmental hazard statements: This substance may be: 

(i) Toxic to fish. 

(ii) Toxic to aquatic organisms. 

(4) Environmental hazard precautionary statements: Notice to users: 

(i) Disposal restrictions apply. 

(ii) Spill clean-up restrictions apply. 

(iii) Do not release to water. 

(5) Each human health or environmental hazard precautionary statement identified in subpart E of this part for the 

label on the substance container must be followed by the statement, “See MSDS for details.” 

(h) Human health, environmental hazard exposure and precautionary statements. (1) Whenever referenced in 

subpart E of this part for a substance, the following human health, environmental hazard, exposure, and 

precautionary statements shall appear on each label as specified in paragraph (b) of this section. Additional 

statements may be included as long as they are true and do not alter the meaning of the required statements. 

(i) Precautionary statements. (A) The health effects of this chemical substance have not been determined. 

(B) When using this substance, use skin protection. 

(C) Use respiratory protection when there is a reasonable likelihood of exposure in the work area from dust, mist, 

or smoke from spray application. 

(D) Chemicals similar in structure to this substance have been found to cause cancer in laboratory animals. 

(ii) Human health hazard statements. This substance may cause: 

(A) Skin irritation 

(B) Respiratory complications 

(C) Central nervous system effects 

(D) Internal organ effects 

(E) Birth defects 

(F) Reproductive effects 
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(G) Cancer 

(H) Immune system effects 

(I) Developmental effects 

(iii) Human health hazard precautionary statements. When using this substance: 

(A) Avoid skin contact 

(B) Avoid breathing substance 

(C) Avoid ingestion 

(D) Use respiratory protection 

(E) Use skin protection 

(iv) Environmental hazard statements. This substance may be: 

(A) Toxic to fish 

(B) Toxic to aquatic organisms 

(v) Environmental hazard precautionary statements. Notice to Users: 

(A) Disposal restrictions apply 

(B) Spill clean-up restrictions apply 

(C) Do not release to water. 

(vi) Additional statements. Each human health or environmental precautionary statement identified in subpart E of 

this part for the label on the substance container must be followed by the statement, “See MSDS for details.” 

(2) Whenever referenced in subpart E of this part for a substance, the following human health, environmental 

hazard, exposure, and precautionary statements shall appear on each MSDS as specified in paragraph (c) of this 

section. Additional statements may be included as long as they are true and do not alter the meaning of the 

required statements. 

(i) Precautionary statements. (A) The health effects of this chemical substance have not been determined. 

(B) When using this substance, use skin protection. 

(C) Use respiratory protection when there is a reasonable likelihood of exposure in the work area from dust, mist, 

or smoke from spray application. 

(D) Chemicals similar in structure to this substance have been found to cause cancer in laboratory animals. 

(ii) Human health hazard statements. This substance may cause: 
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(A) Skin irritation 

(B) Respiratory complications 

(C) Central nervous system effects 

(D) Internal organ effects 

(E) Birth defects 

(F) Reproductive effects 

(G) Cancer 

(H) Immune system effects 

(I) Developmental effects 

(iii) Human health hazard precautionary statements. When using this substance: 

(A) Avoid skin contact 

(B) Avoid breathing substance 

(C) Avoid ingestion 

(D) Use respiratory protection 

(E) Use skin protection 

(iv) Environmental hazard statements. This substance may be: 

(A) Toxic to fish 

(B) Toxic to aquatic organisms 

(v) Environmental hazard precautionary statements. Notice to Users: 

(A) Disposal restrictions apply 

(B) Spill clean-up restrictions apply 

(C) Do not release to water. 

[54 FR 31308, July 27, 1989, as amended at 55 FR 45996, Oct. 31, 1990; 58 FR 34204, June 23, 1993] 

§ 721.80 Industrial, commercial, and consumer activities. 

Whenever a substance is identified in subpart E of this part as being subject to this section, a significant new use 

of the substance is: 
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(a) Use in non-enclosed processes. 

(b) Any manner or method of manufacture in non-enclosed processes associated with any use. 

(c) Any manner or method of processing in non-enclosed processes associated with any use. 

(d) Use beyond the site of manufacture or import. 

(e) Processing beyond the site of manufacture or import. 

(f) Any manner or method of manufacture (excluding import) of the substance associated with any use. 

(g) Use other than as an intermediate. 

(h) Use other than as a site-limited intermediate. 

(i) Use as an intermediate where the concentration of the intermediate substance in the product intended for 

distribution in commerce exceeds the concentration specified in subpart E of this part for the substance. 

(j) Use other than as described in the premanufacture notice referenced in subpart E of this part for the substance. 

(k) Use other than allowed by the section 5(e) consent order referenced in subpart E of this part for the substance. 

(l) Non-industrial use. 

(m) Commercial use. 

(n) Non-commercial use. 

(o) Use in a consumer product. 

(p) Aggregate manufacture and importation volume for any use greater than that specified in subpart E of this part 

for the substance. 

(q) Aggregate manufacture and importation volume for any use greater than that allowed by the section 5(e) 

consent order referenced in subpart E of this part for the substance. 

(r) Aggregate manufacture and importation volume for any use greater than that specified in subpart E of this part 

for the substance unless the manufacturer or importer has submitted the results of the health or environmental 

effects studies identified in subpart E of this part for the substance and those studies comply with the procedures 

and criteria for developing and evaluating data identified in subpart E of this part for the substance. 

(s) Annual manufacture and importation volume for any use greater than that specified in subpart E of this part for 

the substance. 

(t) Annual manufacture and importation volume for any use greater than that allowed by the section 5(e) consent 

order referenced in subpart E of this part for the substance. 

(u) Annual manufacture and importation volume for any use greater than that specified in subpart E of this part 

for the substance unless the manufacturer or importer has submitted the results of the health or environmental 
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effects studies identified in subpart E of this part for the substance and those studies comply with the procedures 

and criteria for developing and evaluating data identified in subpart E of this part for the substance. 

(v) Use in the form of: 

(1) A powder. 

(2) A solid. 

(3) A liquid. 

(4) A gas. 

(w) Any manner or method of manufacture of the substance in the following form associated with any use: 

(1) A powder. 

(2) A solid. 

(3) A liquid. 

(4) A gas. 

(x) Any manner or method of processing of the substance in the following form associated with any use: 

(1) A powder. 

(2) A solid. 

(3) A liquid. 

(4) A gas. 

(y) Use involving an application method that generates: 

(1) A vapor, mist, or aerosol. 

(2) A dust. 

§ 721.85 Disposal. 

Whenever a substance is identified in subpart E of this part as being subject to this section, a significant new use 

of the substance is any method of: 

(a) Disposal of the process stream associated with any use of the substance or with any manner or method of 

manufacturing associated with any use of the substance other than by the following. This provision does not 

supercede any applicable Federal, State, or local laws and regulations. 

(1) Incineration. 
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(2) Landfill. 

(3) Deep well injection. 

(b) Disposal of the process stream associated with any use or with any manner or method of processing associated 

with any use other than by the following. This provision does not supercede any applicable Federal, State, or local 

laws and regulations. 

(1) Incineration. 

(2) Landfill. 

(3) Deep well injection. 

(c) Disposal of the use stream associated with any use, other than by the following. This provision does not 

supercede any applicable Federal, State, or local laws and regulations. 

(1) Incineration. 

(2) Landfill. 

(3) Deep well injection. 

(d) Disposal of the substance associated with any use of the substance, or with any manner or method of 

manufacture or processing in association with any use. This provision does not supercede any applicable Federal, 

State, or local laws and regulations. 

§ 721.90 Release to water. 

Whenever a substance is identified in subpart E of this part as being subject to this section, a significant new use 

of the substance is: 

(a) Any predictable or purposeful release of a manufacturing stream associated with any use of the substance, 

from any site: 

(1) Into the waters of the United States. 

(2) Into the waters of the United States without application of one or more of the following treatment technologies 

as specified in subpart E of this part either by the discharger or, in the case of a release through publicly-owned 

treatment works, by a combination of treatment by the discharger and the publicly-owned treatment works: 

(i) Chemical precipitation and settling. 

(ii) Biological treatment (activated sludge or equivalent) plus clarification. 

(iii) Steam stripping. 

(iv) Resin or activated carbon adsorption. 

(v) Chemical destruction or conversion. 
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(vi) Primary wastewater treatment. 

(3) Into the waters of the United States without primary wastewater treatment, and secondary wastewater 

treatment as defined in 40 CFR part 133. 

(4) Into the waters of the United States if the quotient from the following formula: 

exceeds the level specified in subpart E of this part when calculated using the methods described in §721.91. In 

lieu of calculating the above quotient, monitoring or alternative calculations may be used to predict the surface 

water concentration which will result from the intended release of the substance, if the monitoring procedures or 

calculations have been approved for such purpose by EPA. EPA will review and act on written requests to 

approve monitoring procedures or alternative calculations within 90 days after such requests are received. EPA 

will inform submitters of the disposition of such requests in writing, and will explain the reasons therefor when 

they are denied. 

(b) Any predictable or purposeful release of a process stream containing the substance associated with any use of 

the substance from any site: 

(1) Into the waters of the United States. 

(2) Into the waters of the United States without application of one or more of the following treatment technologies 

as specified in subpart E of this part either by the discharger or, in the case of a release through publicly-owned 

treatment works, by a combination of treatment by the discharger and the publicly-owned treatment works: 

(i) Chemical precipitation and settling. 

(ii) Biological treatment (activated sludge or equivalent) plus clarification. 

(iii) Steam stripping. 

(iv) Resin or activated carbon adsorption. 

(v) Chemical destruction or conversion. 

(vi) Primary wastewater treatment. 

(3) Into the waters of the United States without primary wastewater treatment, and secondary wastewater 

treatment as defined in 40 CFR part 133. 

(4) Into the waters of the United States if the quotient from the following formula: 

exceeds the level specified in subpart E of this part when calculated using the methods described in §721.91. In 

lieu of calculating the above quotient, monitoring or alternative calculations may be used to predict the surface 

water concentration which will result from the intended release of the substance, if the monitoring procedures or 
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calculations have been approved for such purpose by EPA. EPA will review and act on written requests to 

approve monitoring procedures or alternative calculations within 90 days after such requests are received. EPA 

will inform submitters of the disposition of such requests in writing, and will explain the reasons therefor when 

they are denied. 

(c) Any predictable or purposeful release of a use stream containing the substance associated with any use of the 

substance from any site: 

(1) Into the waters of the United States. 

(2) Into the waters of the United States without application of one or more of the following treatment technologies 

as specified in subpart E of this part either by the discharger or, in the case of a release through publicly-owned 

treatment works, by a combination of treatment by the discharger and the publicly-owned treatment works: 

(i) Chemical precipitation and settling. 

(ii) Biological treatment (activated sludge or equivalent) plus clarification. 

(iii) Steam stripping. 

(iv) Resin or activated carbon adsorption. 

(v) Chemical destruction or conversion. 

(vi) Primary wastewater treatment. 

(3) Into the waters of the United States without primary wastewater treatment, and secondary wastewater 

treatment as defined in 40 CFR part 133. 

(4) Into the waters of the United States if the quotient from: 

exceeds the level specified in subpart E of this part, when calculated using the methods described in §721.91. In 

lieu of calculating the above quotient, however, monitoring or alternative calculations may be used to predict the 

surface water concentration expected to result from intended release of the substance, if the monitoring 

procedures or calculations have been approved for such purpose by EPA. EPA will review and act on written 

requests to approve monitoring procedures or alternative calculations within 90 days after such requests are 

received. EPA will inform submitters of the disposition of such requests in writing, and will explain the reasons 

therefor when they are denied. 

§ 721.91 Computation of estimated surface water concentrations: Instructions. 

These instructions describe the use of the equation specified in §721.90(a)(4) and (b)(4) to compute estimated 

surface water concentrations which will result from release of a substance identified in subpart E of this part. The 

equation shall be computed for each site using the stream flow rate appropriate for the site according to paragraph 

(b) of this section, and the highest number of kilograms calculated to be released for that site on a given day 

according to paragraph (a) of this section. Two variables shall be considered in computing the equation, the 

number of kilograms released, and receiving stream flow. 
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(a) Number of kilograms released. (1) To calculate the number of kilograms of substance to be released from 

manufacturing, processing, or use operations, as specified in the numerator of the equation, develop a process 

description diagram which describes each manufacturing, processing, or use operation involving the substance. 

The process description must include the major unit operation steps and chemical conversions. A unit operation is 

a functional step in a manufacturing, processing, or use operation where substances undergo chemical changes 

and/or changes in location, temperature, pressure, physical state, or similar characteristics. Include steps in which 

the substance is formulated into mixtures, suspensions, solutions, etc. 

(2) Indicate on each diagram the entry point of all feedstocks (e.g., reactants, solvents, and catalysts) used in the 

operation. Identify each feedstock and specify its approximate weight regardless of whether the process is 

continuous or batch. 

(3) Identify all release points from which the substance or wastes containing the substance will be released into 

air, land, or water. Indicate these release points on the diagram. Do not include accidental releases or fugitive 

emissions. 

(4) For releases identified in the diagram that are destined for water, estimate the amount of substance that will be 

released before the substance enters control technology. The kilograms of substance released may be estimated 

based on: 

(i) The mass balance of the operation, i.e., totaling inputs and outputs, including wastes for each part of the 

process such that outputs equal inputs. The amount released to water may be the difference between the amount of 

the substance in the starting material (or formed in a reaction) minus the amount of waste material removed from 

each part of the process and not released to water and the amount of the substance in the final product. 

(ii) Physical properties such as water solubility where a known volume of water being discharged is assumed to 

contain the substance at concentrations equal to its solubility in water. This approach is particularly useful where 

the waste stream results from separation of organic/water phases or filtration of the substance from an aqueous 

stream to be discharged. 

(iii) Measurements of flow rates of the process/use stream and known concentrations of the substance in the 

stream. 

(5) After releases of a substance to water are estimated for each operation on a site, total the releases of the 

substance to water from all operations at that site. The value (number of kilograms) specified in the numerator of 

the equation should reflect total kilograms of substance released to water per day from all operations at a single 

site. 

(6) Use the highest expected daily release of the substance for each site. 

(b) Receiving stream flow. (1) The receiving stream flow shall be expressed in million liters per day (MLD). The 

flow rate data to be used must be for the point of release on the water body that first receives release of the 

substance whether by direct discharge from a site, or by indirect discharge through a Publicly-Owned Treatment 

Works (POTW) for each site. The flow rate reported shall be the lowest 7-day average stream flow with a 

recurrence interval of 10 years (7-Q-10). If the 7-Q-10 flow rate is not available for the actual point of release, the 

stream flow rate should be used from the U.S. Geological Survey (USGS) gauging station that is nearest the point 

of release that is expected to have a flow rate less than or equal to the receiving stream flow at the point of release. 

(2) Receiving stream flow data may be available from the National Pollutant Discharge Elimination System 

(NPDES) permit for the site or the POTW releasing the substance to surface water, from the NPDES permitwriting authority for the site or the POTW, or from USGS publications, such as the water-data report series. 
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(3) If receiving stream flow data are not available for a stream, either the value of 10 MLD or the daily flow of 

wastewater from the site or the POTW releasing the substance must be used as an assumed minimum stream flow. 

Similarly, if stream flow data are not available because the location of the point of release of the substance to 

surface water is a lake, estuary, bay, or ocean, then the flow rate to be used must be the daily flow of wastewater 

from the site or the POTW releasing the substance to surface water. Wastewater flow data may be available from 

the NPDES permit or NPDES authority for the site or the POTW releasing the substance to water. 

Subpart C—Recordkeeping Requirements 

§ 721.100 Applicability. 

This subpart C identifies certain additional recordkeeping requirements applicable to manufacturers, importers, 

and processors of substances identified in subpart E of this part for each specific substance. The provisions of this 

subpart C apply only when referenced in subpart E of this part for a substance and significant new use identified 

in that subpart E. If the provisions in this subpart C conflict with general provisions of subpart A of this part, the 

provisions of this subpart C shall apply. 

[54 FR 31313, July 27, 1989] 

§ 721.125 Recordkeeping requirements. 

At the time EPA adds a substance to subpart E of this part, EPA will specify appropriate recordkeeping 

requirements which correspond to the significant new use designations for the substance selected from subpart B 

of this part. Each manufacturer, importer, and processor of the substance shall maintain the records for 5 years 

from the date of their creation. In addition to the records specified in §721.40, the records whose maintenance this 

section requires may include the following: 

(a) Records documenting the manufacture and importation volume of the substance and the corresponding dates 

of manufacture and import. 

(b) Records documenting volumes of the substance purchased in the United States by processors of the substance, 

names and addresses of suppliers, and corresponding dates of purchase. 

(c) Records documenting the names and addresses (including shipment destination address, if different) of all 

persons outside the site of manufacture, importation, or processing to whom the manufacturer, importer, or 

processor directly sells or transfers the substance, the date of each sale or transfer, and the quantity of the 

substance sold or transferred on such date. 

(d) Records documenting establishment and implementation of a program for the use of any applicable personal 

protective equipment required under §721.63. 

(e) Records documenting the determinations required by §721.63(a)(3) that chemical protective clothing is 

impervious to the substance. 

(f) Records documenting establishment and implementation of the hazard communication program required under 

§721.72. 

(g) Copies of labels required under §721.72(b). 

(h) Copies of material safety data sheets required under §721.72(c). 
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(i) Records documenting compliance with any applicable industrial, commercial, and consumer use limitations 

under §721.80. 

(j) Records documenting compliance with any applicable disposal requirements under §721.85, including the 

method of disposal, location of disposal sites, dates of disposal, and volume of the substance disposed. Where the 

estimated disposal volume is not known to or reasonably ascertainable by the manufacturer, importer, or 

processor, that person must maintain other records which demonstrate establishment and implementation of a 

program that ensures compliance with any applicable disposal requirements. 

(k) Records documenting establishment and implementation of procedures that ensure compliance with any 

applicable water discharge limitations under §721.90. 

[54 FR 31313, July 27, 1989] 

Subpart D—Expedited Process for Issuing Significant New Use Rules for Selected Chemical 

Substances and Limitation or Revocation of Selected Significant New Use Rules 

Source: 54 FR 31314, July 27, 1989, unless otherwise noted.

§ 721.160 Notification requirements for new chemical substances subject to section 5(e) orders. 

(a) Selection of substances. (1) In accordance with the expedited process specified in this section, EPA will issue 

significant new use notification requirements and other specific requirements for each new chemical substance 

that is the subject of a final order issued under section 5(e) of the Act, except for an order that prohibits 

manufacture and import of the substance, unless EPA determines that significant new use notification 

requirements are not needed for the substance. 

(2) If EPA determines that significant new use notification requirements are not needed for a substance that is 

subject to a final order issued under section 5(e) of the Act, except for an order that prohibits manufacture or 

import of the substance, EPA will issue a notice in the Federal Register explaining why the significant new use 

requirements are not needed. 

(b) Designation of requirements. (1) The significant new use notification and other specific requirements will be 

based on and be consistent with the provisions included in the final order issued for the substance under section 

5(e) of the Act. EPA may also designate additional activities as significant new uses which will be subject to 

notification. Designation of additional activities as significant new uses will be done in accordance with the 

criteria and procedures under §721.170, or through a separate rulemaking proceeding. 

(2) Significant new use requirements and other specific requirements designated under this section will be listed 

in subpart E of this part. For each substance, subpart E will identify: 

(i) The chemical name. 

(ii) The activities designated as significant new uses. 

(iii) Other specific requirements applicable to the substance, including recordkeeping requirements or any other 

requirements included in the final section 5(e) order. 

(c) Procedures for issuing significant new use rules. (1) EPA will issue significant new use rules under this 

section by one of the following three processes: direct final rulemaking, interim final rulemaking, or notice and 
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comment rulemaking. EPA will use the direct final rulemaking process to issue significant new use rules unless it 

determines that, in a particular case, one of the other processes is more appropriate. 

(2) Federal Register documents issued to propose or establish significant new uses under this section will contain 

the following: 

(i) The chemical identity of the substance or, if its specific identity is claimed confidential, an appropriate generic 

chemical name and an accession number assigned by EPA. 

(ii) The premanufacture notice number. 

(iii) The CAS number, where available and not claimed confidential. 

(iv) A summary of EPA's findings under section 5(e)(1)(A) of the Act for the final order issued under section 5(e). 

(v) Designation of the significant new uses subject to, or proposed to be subject to, notification and any other 

applicable requirements. 

(vi) Any modifications of subpart A of this part applicable to the specific substance and significant new uses. 

(vii) If the Federal Register document establishes a final rule, or notifies the public that a final rule will not be 

issued after public comment has been received, the document will describe comments received and EPA's 

response. 

(3) Direct final rulemaking. (i) When EPA uses the direct final rulemaking procedure to issue a significant new 

use rule, it will issue a final rule in the Federal Register following its decision to develop a significant new use 

rule under this section for a specific new chemical substance. 

(ii) The Federal Register document will state that, unless written notice is received by EPA within 30 days of 

publication that someone wishes to submit adverse or critical comments, the rule will be effective 60 days from 

the date of publication. The written notice of intent to submit adverse or critical comments should state which 

SNUR(s) will be the subject of the adverse or critical comments, if several SNURs are established through the 

direct final rule. If notice is received within 30 days that someone wishes to submit adverse or critical comments, 

the section(s) of the direct final rule containing the SNUR(s) for which a notice of intent to comment was received 

will be withdrawn by EPA issuing a document in the final rule section of theFederal Register,and a proposal will 

be published in the proposed rule section of theFederal Register.The proposal will establish a 30-day comment 

period. 

(iii) If EPA, having considered any timely comments submitted in response to the proposal, decides to establish 

notification requirements under this section, EPA will issue a final rule adding the substance to subpart E of this 

part and designating the significant new uses subject to notification. 

(4) Notice and comment rulemaking. (i) When EPA uses a notice and comment procedure to issue a significant 

new use rule, EPA will issue a proposal in the Federal Register following its decision to develop a significant 

new use rule under this section for a specific new chemical substance. Persons will be given 30 days to comment 

on whether EPA should establish notification requirements for the substance under this part. 

(ii) If EPA, having considered any timely comments, decides to establish notification requirements under this 

section, EPA will issue a final rule adding the substance to subpart E of this part and designating the significant 

new uses subject to notification. 
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(5) Interim final rulemaking. (i) When EPA uses the interim final rulemaking procedure to issue a significant new 

use rule, EPA will issue an interim final rule in the final rule section of the Federal Register following its 

decision to develop a significant new use rule for a specific new chemical substance. The document will state 

EPA's reasons for using the interim final rulemaking procedure. 

(A) The significant new use rule will take effect on the date of publication. 

(B) Persons will be given 30 days from the date of publication to submit comments. 

(ii) Interim final rules issued under this section shall cease to be in effect 180 days after publication unless, within 

the 180-day period, EPA issues a final rule in the Federal Register responding to any written comments received 

during the 30-day comment period specified in paragraph (c)(5)(i)(B) of this section and promulgating final 

significant new use notification requirements and other requirements for the substance. 

(d) Schedule for issuing significant new use rules. (1) Unless EPA determines that a significant new use rule 

should not be issued under this section, EPA will issue a proposed rule, a direct final rule, or an interim final rule 

within 180 days of receipt of a valid notice of commencement under §720.102 of this chapter for any substance 

for which the notice of commencement was received on or after October 10, 1989. 

(2) Unless EPA determines that a significant new use rule should not be issued under this section, EPA will issue 

a proposed rule, a direct final rule, or an interim final rule within 1 year of October 10, 1989, for any substance for 

which the valid notice of commencement under §720.102 of this chapter was received before October 10, 1989. 

(3) If EPA receives adverse or critical significant comments following publication of a proposed or interim final 

rule, EPA will either withdraw the rule or issue a final rule addressing the comments received. 

§ 721.170 Notification requirements for selected new chemical substances that have completed 

premanufacture review. 

(a) Selection of substances. In accordance with the expedited process specified in this section, EPA may issue 

significant new use notification and recordkeeping requirements for any new chemical substance for which a 

premanufacture notice has been submitted under part 720 of this chapter if EPA determines that activities other 

than those described in the premanufacture notice may result in significant changes in human exposure or 

environmental release levels and/or that concern exists about the substance's health or environmental effects. 

(b) Concern criteria. EPA may determine that concern exists about a substance's health or environmental effects 

if EPA makes any one of the following findings: 

(1)(i) The substance may cause carcinogenic effects because the substance: 

(A) Has been shown by valid test data to cause carcinogenic effects in humans or in at least one species of 

laboratory animal. 

(B) Has been shown to be a possible carcinogen based on the weight of the evidence in short-term tests indicative 

of the potential to cause carcinogenic effects. 

(C) Is closely analogous, based on toxicologically relevant similarities in molecular structure and physical 

properties, to another substance that has been shown by test data to cause carcinogenic effects in humans or in at 

least one species of laboratory animal, provided that if there is more than one such analogue, the greatest weight 

will be given to the relevant data for the most appropriate analogues. 
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(D) Is known or can reasonably be anticipated, based on valid scientific data or established scientific principles, to 

be metabolized in humans or transformed in the environment to a substance which may have the potential to 

cause carcinogenic effects under the criteria in paragraphs (b)(1)(i) (A), (B), or (C) of this section. 

(ii) No substance may be regulated based on a finding under paragraph (b)(1) of this section unless EPA has also 

made the finding under §721.170(c)(2)(ii). 

(2) The substance has been shown by valid test data to cause acutely toxic effects in at least one species of 

laboratory animal or is closely analogous, based on toxicologically relevant similarities in molecular structure and 

physical properties, to another substance that has been shown by valid test data to cause acutely toxic effects in at 

least one species of laboratory animal, provided that if there is more than one such analogue, the greatest weight 

will be given to the relevant data for the most appropriate analogues. 

(3) The substance may cause serious chronic effects, serious acute effects, or developmentally toxic effects under 

reasonably anticipated conditions of exposure because the substance: 

(i) Has been shown by valid test data to cause serious chronic effects, serious acute effects, or developmentally 

toxic effects in humans or in at least one species of laboratory animal at dose levels that could be of concern under 

reasonably anticipated conditions of exposure. 

(ii) Is closely analogous, based on toxicologically relevant similarities in molecular structure and physical 

properties, to another chemical substance that has been shown by valid test data to cause serious chronic effects, 

serious acute effects, or developmentally toxic effects in humans or in at least one species of laboratory animal at 

dose levels that could be of concern under reasonably anticipated conditions of exposure, provided that if there is 

more than one such analogue, the greatest weight will be given to the relevant data for the most appropriate 

analogues. 

(iii) Is known or can reasonably be anticipated, based on valid scientific data or established scientific principles, 

to be metabolized in humans or transformed in the environment to a substance which may have the potential to 

cause serious chronic effects, serious acute effects, or developmentally toxic effects under the criteria in 

paragraph (b)(3) (i) and (ii) of this section. 

(iv) Has been shown to potentially cause developmentally toxic effects based on the weight of the evidence in 

short-term tests indicative of the potential to cause developmentally toxic effects. 

(4) The substance may cause significant adverse environmental effects under reasonably anticipated conditions of 

release because the substance: 

(i) Has been shown by valid test data to cause significant adverse environmental effects at dose levels that could 

be of concern under reasonably anticipated conditions of release. 

(ii) Is closely analogous, based on toxicologically relevant similarities in molecular structure and physical 

properties, to another substance that has been shown by valid test data to cause significant adverse environmental 

effects at dose levels that could be of concern under reasonably anticipated conditions of release, provided that if 

there is more than one such analogue, the greatest weight will be given to the relevant data for the most 

appropriate analogues. 

(iii) Has been determined, based on calculations using the substance's physical and chemical properties, to be 

potentially able to cause significant adverse environmental effects at dose levels that could be of concern under 

reasonably anticipated conditions of release. 
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(iv) Is known or can reasonably be anticipated, based on valid scientific data or established scientific principles, to 

be environmentally transformed to a substance which may have the potential to cause significant adverse 

environmental effects under the criteria in paragraph (b)(4) (i), (ii), and (iii) of this section. 

(5) Concern exists about the health or environmental effects of one or more impurities or byproducts of the 

substance because the impurity or byproduct meets one or more of the criteria in paragraph (b) (1) through (4) of 

this section and either: 

(i) The impurity or byproduct is a new chemical substance and may be present in concentrations that could cause 

adverse health or environmental effects under reasonably anticipated conditions of exposure or release. 

(ii) Reasonably anticipated manufacture, processing, or use activities involving the substance for which a 

premanufacture notice has been submitted may result in significantly increased human exposure to or 

environmental release of the impurity or byproduct compared to exposure or release levels resulting from existing 

activities involving the impurity or byproduct. 

(c) Designation of requirements. (1) When EPA decides to establish significant new use reporting requirements 

under this section, EPA may designate as a significant new use any one or more of the activities set forth in 

subpart B of this part. In addition, EPA may designate specific recordkeeping requirements described under 

subpart C of this part that are applicable to the substance. 

(2) EPA may designate as a significant new use only those activities that (i) are different from those described in 

the premanufacture notice for the substance, including any amendments, deletions, and additions of activities to 

the premanufacture notice, and (ii) may be accompanied by changes in exposure or release levels that are 

significant in relation to the health or environmental concerns identified under paragraph (b) of this section. 

(d) Procedures for issuing significant new use rules. (1) Significant new use requirements designated under this 

section will be listed in subpart E of this part. For each substance, subpart E of this part will identify: 

(i) The chemical name. 

(ii) The activities designated as significant new uses, which may include one or more of the activities described in 

paragraph (c) of this section. 

(iii) Other specific requirements applicable to the substance. 

(2) When EPA determines that a substance is a candidate for a significant new use rule under this section, it will 

notify the person that submitted the premanufacture notice for the substance no later than 7 calendar days before 

the expiration of the notice review period under §720.75 of this chapter. In providing this notice, EPA will 

describe the health or environmental concerns identified under paragraph (b) of this section and the activities 

under consideration for designation as significant new uses. Such notice may be by telephone, but in this event 

will be confirmed in writing no later than 30 days after completion of the notice review period. 

(3) Federal Register documents issued to propose or establish significant new uses under this section will contain 

the following: 

(i) The chemical identity of the substance or, if its specific identity is claimed confidential, an appropriate generic 

chemical name and an accession number assigned by EPA. 

(ii) The premanufacture notice number. 
Proposed Rule; Electronic Reporting Under the Toxic Substances Control Act (RIN 2070-AJ75) 

Demonstration of Proposed Revisions to Existing Rules – 40 CFR 721, subparts A-D

(iii) The CAS number, where available and not claimed confidential. 

(iv) A summary of the basis for action under this section. 

(v) Designation of the significant new uses subject to, or proposed to be subject to, notification and any other 

applicable requirements. 

(vi) Any modifications of subpart A of this part applicable to the specific substance and significant new uses. 

(vii) If the Federal Register document establishes a final rule, or notifies the public that a final rule will not be 

issued after public comment has been received, the document will describe comments received and EPA's 

response. 

(4) EPA will issue significant new use rules under this section by one of the following three processes: direct final 

rulemaking, interim final rulemaking, or notice and comment rulemaking. EPA will use the direct final 

rulemaking process to issue significant new use rules unless it determines that, in a particular case, one of the 

other processes is more appropriate. 

(i)(A) When EPA uses the direct final rulemaking procedure to issue a significant new use rule it will issue a 

direct final rule in the final rule section of the Federal Register following its decision to develop a significant 

new use rule under this section for a specific new chemical substance. 

(B) The Federal Register document will state that, unless written notice is received by EPA within 30 days after 

the date of publication that someone wishes to submit adverse or critical comments, the SNUR will be effective 

60 days from date of publication. The written notice of intent to submit adverse or critical comments should state 

which SNUR(s) will be the subject of the adverse or critical comments, if several SNURs are established through 

the direct final rule. If notice is received within 30 days after the date of publication that someone wishes to 

submit adverse or critical comments, the section(s) of the direct final rule containing the SNUR(s) for which a 

notice of intent to comment was received will be withdrawn by EPA issuing a document in the final rule section 

of theFederal Register,and EPA will issue a proposed rule in the proposed rule section of theFederal Register.The 

proposed rule will establish a 30-day comment period. 

(C) If EPA, having considered any timely comments submitted in response to the proposal, decides to establish 

notification requirements under this section, EPA will issue a final rule adding the substance to subpart E of this 

part and designating the significant new uses subject to notification. 

(ii)(A) When EPA uses a notice and comment procedure to issue a significant new use rule, EPA will issue a 

proposed rule in the Federal Register following its decision to develop a significant new use rule under this 

section for a specific new chemical substance. Persons will be given 30 days to comment on whether EPA should 

establish notification requirements for the substance under this part. 

(B) If EPA, having considered any timely comments, decides to establish notification requirements under this 

section, EPA will issue a final rule adding the substance to subpart E of this part and designating the significant 

new uses subject to notification. 

(iii)(A) When EPA uses the interim final rulemaking procedure to issue a significant new use rule, EPA will issue 

an interim final rule in the final rule section of the Federal Register following its decision to develop a 

significant new use rule for a specific new chemical substance. The document will state EPA's reasons for using 

the interim final rulemaking procedure. 

( 1 ) The significant new use rule will take effect on the date of publication. 
Proposed Rule; Electronic Reporting Under the Toxic Substances Control Act (RIN 2070-AJ75) 

Demonstration of Proposed Revisions to Existing Rules – 40 CFR 721, subparts A-D

( 2 ) Persons will be given 30 days from the date of publication to submit comments. 

(B) An interim final rule issued under this section shall cease to be in effect 180 days after publication unless, 

within the 180-day period, EPA issues a final rule in the Federal Register responding to any written comments 

received during the 30-day comment period specified in paragraph (d)(4)(iii)(A)( 2 ) of this section and 

promulgating final significant new use notification requirements and other requirements for the substance. 

(e) Schedule for issuing significant new use rules. (1) EPA will issue a proposed rule, an interim final rule, or a 

direct final rule within 270 days of receipt of the notice of commencement under §720.102 of this chapter for any 

substance for which the notice of commencement was received on or after October 10, 1989. 

(2) If EPA receives adverse or critical comments within the designated comment period following publication of a 

proposed rule or an interim final rule, EPA will either withdraw the rule or issue a final rule addressing the 

comments received. 

[54 FR 31314, July 27, 1989, as amended at 60 FR 16316, Mar. 29, 1995] 

§ 721.185 Limitation or revocation of certain notification requirements. 

(a) Criteria for modification or revocation. EPA may at any time modify or revoke significant new use 

notification requirements for a chemical substance which has been added to subpart E of this part using the 

procedures under §721.160 or §721.170. Such action may be taken under this section if EPA makes one of the 

following determinations, unless other information shows that the requirements should be retained: 

(1) Test data or other information obtained by EPA provide a reasonable basis for concluding that activities 

designated as significant new uses of the substance will not present an unreasonable risk of injury to human health 

or the environment. 

(2) EPA has promulgated a rule under section 4 or 6 of the Act, or EPA or another agency has taken action under 

another law for the substance that eliminates the need for significant new use notification under section 5(a)(2) of 

the Act. 

(3) EPA has received significant new use notices for some or all of the activities designated as significant new 

uses of the substance and, after reviewing such notices, concluded that there is no need to require additional notice 

from persons who propose to engage in identical or similar activities. 

(4) EPA has examined new information, or has reexamined the test data or other information or analysis 

supporting its decision to add the substance to subpart E of this part under §721.170 and has concluded that the 

substance does not meet the criteria under §721.170(b). 

(5) For a substance added to subpart E of this part under §721.160, EPA has examined new information, or has 

reexamined the test data or other information or analysis supporting its finding under section 5(e)(1)(A)(ii)(I) of 

the Act, and has concluded that a rational basis no longer exists for the findings that activities involving the 

substance may present an unreasonable risk of injury to human health or the environment required under section 

5(e)(1)(A) of the Act. 

(6) For a substance added to subpart E of this part under §721.160, certain activities involving the substance have 

been designated as significant new uses pending the completion of testing, and adequate test data developed in 

accordance with applicable procedures and criteria have been submitted to EPA. 
Proposed Rule; Electronic Reporting Under the Toxic Substances Control Act (RIN 2070-AJ75) 

Demonstration of Proposed Revisions to Existing Rules – 40 CFR 721, subparts A-D

(b) Procedures for limitation or revocation. Modification or revocation of significant new use notification 

requirements for a substance that has been added to subpart E of this part using the procedures described under 

§721.160 or §721.170 may occur either at EPA's initiative or in response to a written request. 

(1) Any affected person may request modification or revocation of significant new use notification requirements 

for a substance that has been added to subpart E of this part using the procedures described in §§721.160 or 

§721.170 by submitting a request that is writing to the Director of the Office of Pollution Prevention and Toxics, 

and stating the basis for such request. The request must be accompanied by the information sufficient to support 

the request. Persons submitting a request to EPA under this part, unless allowed by 40 CFR 720.40(a)(2)(i), (ii), 

or (iii), must submit the request to EPA via EPA's Central Data Exchange (CDX) using EPA-provided e-PMN 

reporting software in the manner set forth in 40 CFR 720.40(a)(2)(i). See 40 CFR 720.40(a)(2)(ivii) for 

information on how to obtain the e-PMN software. Support documents related to these requests must also be 

submitted to EPA in the manner set forth in 40 CFR 720.40(a)(2)(i), (ii), or (iii)(c). Paper requests must be 

submitted either via U.S. mail to the Document Control Office (DCO) (7407M), Office of Pollution Prevention 

and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460–0001; 

ATTN: Request to Amend SNUR or submitted via courier to the Environmental Protection Agency, OPPT 

Document Control Office (DCO), EPA East Bldg., 1201 Constitution Ave., NW., Rm. 6428, Washington, DC 

20004; ATTN: Request to Amend SNUR. Optical discs containing electronic requests must be submitted by 

courier to the Environmental Protection Agency, OPPT Document Control Office (DCO), EPA East Bldg., 1201 

Constitution Ave., NW., Rm. 6428, Washington, DC 20004; ATTN: Request to Amend SNUR.

(2) The Director of the Office of Pollution Prevention and Toxics will consider the request, make a determination 

whether to initiate rulemaking to modify the requirements, and notify the requester of that determination by 

certified letter. If the request is denied, the letter will explain why EPA has concluded that the significant new use 

notification requirements for that substance should remain in effect. 

(3) If EPA concludes that significant new use notification requirements for a substance should be limited or 

revoked, EPA will propose the changes in the Federal Register, briefly describe the grounds for the action, and 

provide interested parties an opportunity to comment. 

[54 FR 31314, July 27, 1989, as amended at 58 FR 34204, June 23, 1993; 60 FR 34464, July 3, 1995; 71 FR 

33641, June 12, 2006; 76 FR 30836, May 27, 2011]