32152 Federal Register / Vol. 78, No. 103 / Wednesday, May 29, 2013 / Rules and Regulations 

(b) Section 18 emergency exemptions. 

[Reserved] 

(c) Tolerances with regional 

registrations. [Reserved] 

(d) Indirect or inadvertent residues. 

[Reserved] 

[FR Doc. 2013–12461 Filed 5–28–13; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 180 

[EPA–HQ–OPP–2012–0558; FRL–9387–2] 

Guar Hydroxypropyltrimethylammonium Chloride; Exemption From the 

Requirement of a Tolerance 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Final rule. 

SUMMARY: This regulation establishes an 

exemption from the requirement of a 

tolerance for residues of guar 

hydroxypropyltrimethylammonium 

chloride (CAS Reg. No. 71329–50–5) 

when used as an inert ingredient 

(thickener/drift reduction agent) in 

pesticide formulations applied to 

growing crops. SciReg. Inc., on behalf of 

Rhodia Inc., submitted a petition to EPA 

under the Federal Food, Drug, and 

Cosmetic Act (FFDCA), requesting 

establishment of an exemption from the 

requirement of a tolerance. This 

regulation eliminates the need to 

establish a maximum permissible level 

for residues of guar 

hydroxypropyltrimethylammonium 

chloride. 

DATES: This regulation is effective May 

29, 2013. Objections and requests for 

hearings must be received on or before 

July 29, 2013, and must be filed in 

accordance with the instructions 

provided in 40 CFR part 178 (see also 

Unit I.C. of the SUPPLEMENTARY

INFORMATION). 

ADDRESSES: The docket for this action, 

identified by docket identification (ID) 

number EPA–HQ–OPP–2012–0558, is 

available at http://www.regulations.gov 

or at the Office of Pesticide Programs 

Regulatory Public Docket (OPP Docket) 

in the Environmental Protection Agency 

Docket Center (EPA/DC), EPA West 

Bldg., Rm. 3334, 1301 Constitution Ave. 

NW., Washington, DC 20460–0001. The 

Public Reading Room is open from 8:30 

a.m. to 4:30 p.m., Monday through 

Friday, excluding legal holidays. The 

telephone number for the Public 

Reading Room is (202) 566–1744, and 

the telephone number for the OPP 

Docket is (703) 305–5805. Please review 

the visitor instructions and additional 

information about the docket available 

at http://www.epa.gov/dockets. 

FOR FURTHER INFORMATION CONTACT: 

William Cutchin, Registration Division 

(7505P), Office of Pesticide Programs, 

Environmental Protection Agency, 1200 

Pennsylvania Ave. NW., Washington, 

DC 20460–0001; telephone number: 

(703) 305–7099; email address: 

cutchin.william@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. Does this action apply to me? 

You may be potentially affected by 

this action if you are an agricultural 

producer, food manufacturer, or 

pesticide manufacturer. The following 

list of North American Industrial 

Classification System (NAICS) codes is 

not intended to be exhaustive, but rather 

provides a guide to help readers 

determine whether this document 

applies to them. Potentially affected 

entities may include: 

• Crop production (NAICS code 111). 

• Animal production (NAICS code 

112). 

• Food manufacturing (NAICS code 

311). 

• Pesticide manufacturing (NAICS 

code 32532). 

B. How can I get electronic access to 

other related information? 

You may access a frequently updated 

electronic version of 40 CFR part 180 

through the Government Printing 

Office’s e-CFR site at http:// 

ecfr.gpoaccess.gov/cgi/t/text/textidx?&c=ecfr&tpl=/ecfrbrowse/Title40/ 

40tab_02.tpl. 

C. How can I file an objection or hearing 

request? 

Under FFDCA section 408(g), 21 

U.S.C. 346a, any person may file an 

objection to any aspect of this regulation 

and may also request a hearing on those 

objections. You must file your objection 

or request a hearing on this regulation 

in accordance with the instructions 

provided in 40 CFR part 178. To ensure 

proper receipt by EPA, you must 

identify docket ID number EPA–HQ– 

OPP–2012–0558 in the subject line on 

the first page of your submission. All 

objections and requests for a hearing 

must be in writing, and must be 

received by the Hearing Clerk on or 

before July 29, 2013. Addresses for mail 

and hand delivery of objections and 

hearing requests are provided in 40 CFR 

178.25(b). 

In addition to filing an objection or 

hearing request with the Hearing Clerk 

as described in 40 CFR part 178, please 

submit a copy of the filing (excluding 

any Confidential Business Information 

(CBI)) for inclusion in the public docket. 

Information not marked confidential 

pursuant to 40 CFR part 2 may be 

disclosed publicly by EPA without prior 

notice. Submit the non-CBI copy of your 

objection or hearing request, identified 

by docket ID number EPA–HQ–OPP– 

2012–0558, by one of the following 

methods: 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the online 

instructions for submitting comments. 

Do not submit electronically any 

information you consider to be CBI or 

other information whose disclosure is 

restricted by statute. 

• Mail: OPP Docket, Environmental 

Protection Agency Docket Center (EPA/ 

DC), (28221T), 1200 Pennsylvania Ave. 

NW., Washington, DC 20460–0001. 

• Hand Delivery: To make special 

arrangements for hand delivery or 

delivery of boxed information, please 

follow the instructions at http:// 

www.epa.gov/dockets/contacts.htm. 

Additional instructions on commenting 

or visiting the docket, along with more 

information about dockets generally, is 

available at http://www.epa.gov/ 

dockets. 

II. Petition for Exemption 

In the Federal Register of September 

28, 2012 (77 FR 59581) (FRL–9364–6), 

EPA issued a notice pursuant to FFDCA 

section 408, 21 U.S.C. 346a, announcing 

the filing of a pesticide petition (PP 

2E8017) by SciReg. Inc., 12733 

Director’s Loop, Woodbridge, VA 22192 

on behalf of Rhodia Inc. The petition 

requested that 40 CFR 180.920 be 

amended by establishing an exemption 

from the requirement of a tolerance for 

residues of guar 

hydroxypropyltrimethylammonium 

chloride (CAS No. 71329–50–5) when 

used as an inert ingredient (thickener/ 

drift reduction agent) in pesticide 

formulations applied to growing crops 

under 40 CFR 180.920. That notice 

referenced a summary of the petition 

prepared by Rhodia, Inc. the petitioner, 

which is available in the docket, 

http://www.regulations.gov. Comments 

were received on the notice of filing. 

EPA’s response to these comments is 

discussed in Unit V.C. 

III. Inert Ingredient Definition 

Inert ingredients are all ingredients 

that are not active ingredients as defined 

in 40 CFR 153.125 and include, but are 

not limited to, the following types of 

ingredients (except when they have a 

pesticidal efficacy of their own): 

Solvents such as alcohols and 

hydrocarbons; surfactants such as 


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polyoxyethylene polymers and fatty 

acids; carriers such as clay and 

diatomaceous earth; thickeners such as 

carrageenan and modified cellulose; 

wetting, spreading, and dispersing 

agents; propellants in aerosol 

dispensers; microencapsulating agents; 

and emulsifiers. The term ‘‘inert’’ is not 

intended to imply nontoxicity; the 

ingredient may or may not be 

chemically active. Nevertheless, in most 

instances, EPA generally exempts inert 

ingredients from the requirement of a 

tolerance based on the low toxicity of 

the individual inert ingredients. 

IV. Aggregate Risk Assessment and 

Determination of Safety 

Section 408(c)(2)(A)(i) of FFDCA 

allows EPA to establish an exemption 

from the requirement for a tolerance (the 

legal limit for a pesticide chemical 

residue in or on a food) only if EPA 

determines that the tolerance is ‘‘safe.’’ 

Section 408(b)(2)(A)(ii) of FFDCA 

defines ‘‘safe’’ to mean that ‘‘there is a 

reasonable certainty that no harm will 

result from aggregate exposure to the 

pesticide chemical residue, including 

all anticipated dietary exposures and all 

other exposures for which there is 

reliable information.’’ This includes 

exposure through drinking water and in 

residential settings, but does not include 

occupational exposure. Section 

408(b)(2)(C) of FFDCA requires EPA to 

give special consideration to exposure 

of infants and children to the pesticide 

chemical residue in establishing a 

tolerance and to ‘‘ensure that there is a 

reasonable certainty that no harm will 

result to infants and children from 

aggregate exposure to the pesticide 

chemical residue . . . .’’ 

EPA establishes exemptions from the 

requirement of a tolerance only in those 

cases where it can be clearly 

demonstrated that the risks from 

aggregate exposure to pesticide 

chemical residues under reasonably 

foreseeable circumstances will pose no 

appreciable risks to human health. In 

order to determine the risks from 

aggregate exposure to pesticide inert 

ingredients, the Agency considers the 

toxicity of the inert in conjunction with 

possible exposure to residues of the 

inert ingredient through food, drinking 

water, and through other exposures that 

occur as a result of pesticide use in 

residential settings. If EPA is able to 

determine that a finite tolerance is not 

necessary to ensure that there is a 

reasonable certainty that no harm will 

result from aggregate exposure to the 

inert ingredient, an exemption from the 

requirement of a tolerance may be 

established. 

Consistent with FFDCA section 

408(c)(2)(A), and the factors specified in 

FFDCA section 408(c)(2)(B), EPA has 

reviewed the available scientific data 

and other relevant information in 

support of this action. EPA has 

sufficient data to assess the hazards of 

and to make a determination on 

aggregate exposure for guar 

hydroxypropyltrimethylammonium 

chloride including exposure resulting 

from the exemption established by this 

action. EPA’s assessment of exposures 

and risks associated with guar 

hydroxypropyltrimethylammonium 

chloride follows. 

A. Toxicological Profile 

EPA has evaluated the available 

toxicity data and considered their 

validity, completeness, and reliability as 

well as the relationship of the results of 

the studies to human risk. EPA has also 

considered available information 

concerning the variability of the 

sensitivities of major identifiable 

subgroups of consumers, including 

infants and children. Specific 

information on the studies received and 

the nature of the adverse effects caused 

by guar 

hydroxypropyltrimethylammonium 

chloride as well as the no-observedadverse-effect-level (NOAEL) and the 

lowest-observed-adverse-effect-level 

(LOAEL) from the toxicity studies are 

discussed in this unit. 

Acute toxicity studies and 

mutagenicity studies were conducted 

with guar 

hydroxypropyltrimethylammonium 

chloride. However, guar 

hydroxypropyltrimethylammonium 

chloride has the same basic molecular 

structure (a high molecular weight 

polysaccarhide backbone) as guar gum, 

and other slightly modified forms of 

guar gum. Based on common molecular 

structure of guar 

hydroxypropyltrimethylammonium 

chloride with guar gum, hydroxyproplyl 

guar, carboxymethyl guar and 

carboxymethyl hydroxylpropyl guar, it 

is expected that these substances would 

share chemical and toxicological 

properties. 

Guar 

hydroxypropyltrimethylammonium 

chloride has a low toxicity profile. The 

acute oral LD50 (lethal dose) is greater 

than 2,000 milligrams/kilogram (mg/kg). 

No dermal irritation, dermal 

sensitization, or mutagenicity was 

observed. Eye irritation was mild to 

none. Since no subchronic, reproductive 

and developmental, and carcinogenicity 

studies are available for guar 

hydroxypropyltrimethylammonium 

chloride, EPA relied on studies 

conducted on the structurally similar 

compounds guar gum, hydroxypropyl 

guar, and carboxymethyl guar, and 

carboxymethyl-hydroxypropyl guar. 

Subchronic, reproductive and 

developmental, and carcinogenicity 

studies with guar gum showed no longterm, reproductive/developmental 

toxicity or carcinogenic effects. Also 

teratogenicity studies with guar gum in 

mice, rats, and hamsters did not 

indicate that guar gum is a teratogen, up 

to levels of 800 mg/kg/day, 900 mg/kg/ 

day, and 600 mg/kg/day, respectively. In 

addition, no effects on parental fertility, 

fetal development, sex distribution, and 

no malformations of the pups were 

observed at doses up to 7,500 mg/kg/day 

in the one-generation reproduction 

study in rats. No evidence of 

immunotoxicity (spleen, thymus, blood) 

was observed in the available toxicity 

studies on structurally related 

chemicals. Furthermore, no clinical 

signs of neurotoxicity were observed at 

very high doses in the available 

database for structurally similar 

compounds. 

Based on these data, EPA concludes 

that guar 

hydroxypropyltrimethylammonium 

chloride has a low toxicity profile. 

These findings are supported by what 

would be expected based on the 

physical characteristics of the 

substance. As a cationic form of guar, 

guar 

hydroxypropyltrimethylammonium 

chloride would be expected to be a 

dermal and eye irritant. Its high 

molecular weight as a polysaccharide 

polymer limits its ability to be absorbed 

through the skin, lungs, or 

gastrointestinal tract; therefore, guar 

hydroxypropyltrimethylammonium 

chloride is of low concern for acute and 

chronic effects, reproductive/ 

developmental toxicity, immunotoxic, 

neurotoxic, and carcinogenic effects. 

B. Toxicological Points of Departure/ 

Levels of Concern 

The majority of the available studies 

suggest that high levels of guars were 

well tolerated by laboratory animals. 

Although there were two studies that 

showed some effects, they appear to be 

outliers since those results were not 

replicated in the longer-term studies. In 

the two 90-day toxicity studies, the 

body weight gain appears to be 

depressed at 500 mg/kg/day dose levels 

and above. However, generally the food 

consumption was not affected. In a third 

90-day toxicity study in rats, no effect 

on body weight was observed at doses 

up to 3,000 mg/kg/day. No effect on the 

body weights were observed in the 

reproduction study in rats at doses up 


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32154 Federal Register / Vol. 78, No. 103 / Wednesday, May 29, 2013 / Rules and Regulations 

to 7,500 mg/kg/day. In the 

carcinogenicity studies in mice and rats 

by the National Toxicology Program 

(NTP) (1982), no adverse effects were 

observed at doses up to 3,570 mg/kg/ 

day. Based on their large molecular 

weights, these two chemicals are not 

expected to be significantly absorbed via 

oral, dermal and inhalation routes of 

exposure. This is further supported by 

the animal toxicity studies where no 

significant effects were observed in a 

carcinogenicity studies in mice and rats 

and reproduction study in rats at doses 

up to and including 3,500 mg/kg/day. 

Based on the above weight of evidence, 

no endpoint of concern was identified; 

therefore, it is not appropriate to 

conduct a quantitative assessment. 

C. Exposure Assessment 

1. Dietary exposure from food and 

feed uses, drinking water, and nondietary exposure. 

Exposure to guar 

hydroxypropyltrimethylammonium 

chloride through food, water and nondietary sources are likely to occur. 

However, a quantitative exposure 

assessment was not conducted because 

no endpoint of concern (hazard) was 

identified in the available database. 

2. Cumulative effects from substances 

with a common mechanism of toxicity. 

Section 408(b)(2)(D)(v) of FFDCA 

requires that, when considering whether 

to establish, modify, or revoke a 

tolerance, the Agency consider 

‘‘available information’’ concerning the 

cumulative effects of a particular 

pesticide’s residues and ‘‘other 

substances that have a common 

mechanism of toxicity.’’ 

Results of toxicological studies 

conducted with guar 

hydroxypropyltrimethylammonium 

chloride demonstrate the substance is of 

low toxicity. In addition, guar 

hydroxypropyltrimethylammonium 

chloride is a slightly modified form of 

guar gum, a natural polymer which is an 

affirmed GRAS (generally recognized as 

safe) substance of low toxicity. Guar 

hydroxypropyltrimethylammonium 

chloride is also structurally similar to 

hydroxypropyl guar, carboxymethyl 

guar, and carboxymethyl-hydroxypropyl 

guar, other slightly modified forms of 

guar gum and all of which are exempt 

from the requirement of a tolerance. As 

part of its qualitative assessment of guar 

hydroxypropyltrimethylammonium 

chloride, EPA is not concerned about 

the potential for cumulative effects 

given the low toxicity of this substance 

and its structurally similar substances. 

For information regarding EPA’s efforts 

to determine which chemicals have a 

common mechanism of toxicity and to 

evaluate the cumulative effects of such 

chemicals, see EPA’s Web site at 

http://www.epa.gov/pesticides/ 

cumulative. 

D. Safety Factor for Infants and 

Children 

As part of its qualitative assessment, 

the Agency did not use safety factors for 

assessing risk, and no additional safety 

factor is needed for assessing risk to 

infants and children. Guar 

hydroxypropyltrimethylammonium 

chloride is a slightly modified form of 

guar gum, a natural polymer which is an 

affirmed GRAS substance of low 

toxicity. Guar 

hydroxypropyltrimethylammonium 

chloride is also structurally similar to 

hydroxypropyl guar, another slightly 

modified form guar gum. According to 

EPA’s 2005 tolerance exemption 

reassessment document for 

hydroxypropyl guar, it was concluded 

that hydroxypropyl guar is a high 

molecular weight polymer that is devoid 

of reactive functional groups and which 

is not absorbed by any route of human 

exposure. Also teratogenicity studies 

with guar gum in mice, rats, and 

hamsters did not indicate that guar gum 

is a teratogen, up to levels of 800 mg/ 

kg, 900 mg/kg, and 600 mg/kg, 

respectively. In addition, no effects on 

parental fertility, fetal development, sex 

distribution, and no malformations of 

the pups were observed at doses up to 

7,500 mg/kg/day in the 1-generation 

reproduction study in rats. Based on the 

structural similarities to guar gum and 

hydroxypropyl guar, as well as its high 

molecular weights and low likelihood of 

absorption via any route of exposure, 

guar 

hydroxypropyltrimethylammonium 

chloride is unlikely to elicit a toxic 

response in infants and children when 

used as an inert ingredient in pesticide 

products. Available toxicity studies 

support this conclusion of low toxicity. 

E. Aggregate Risks and Determination of 

Safety 

In examining aggregate exposure, EPA 

considers available information 

concerning exposures from the pesticide 

residue in food and all other 

nonoccupational exposures, including 

drinking water from ground water or 

surface water and exposure through 

pesticide use in gardens, lawns, or 

buildings (residential and other indoor 

uses). Based on results from 

toxicological studies, its close structural 

relationship to guar gum, 

hydroxypropyl guar, carboxymethyl 

guar, and carboxymethyl-hydroxypropyl 

guar, as well as its high molecular 

weight and low likelihood of absorption 

via any route of exposure, guar 

hydroxypropyltrimethylammonium 

chloride is considered to be a low 

toxicity substance. Taking into 

consideration all available information 

on guar 

hydroxypropyltrimethylammonium 

chloride, EPA has determined that there 

is a reasonable certainty that no harm to 

any population subgroup, including 

infants and children, will result from 

aggregate exposure to guar 

hydroxypropyltrimethylammonium 

chloride under reasonably foreseeable 

circumstances. Therefore, the 

establishment of an exemption from 

tolerance under 40 CFR 180.920 for 

residues of guar 

hydroxypropyltrimethylammonium 

chloride when used as an inert 

ingredient in pesticide formulations 

applied, is safe under FFDCA section 

408. 

V. Other Considerations 

A. Analytical Enforcement Methodology 

An analytical method is not required 

for enforcement purposes since the 

Agency is establishing an exemption 

from the requirement of a tolerance 

without any numerical limitation. 

B. International Residue Limits 

In making its tolerance decisions, EPA 

seeks to harmonize U.S. tolerances with 

international standards whenever 

possible, consistent with U.S. food 

safety standards and agricultural 

practices. EPA considers the 

international maximum residue limits 

(MRLs) established by the Codex 

Alimentarius Commission (Codex), as 

required by FFDCA section 408(b)(4). 

The Codex Alimentarius is a joint 

United Nation Food and Agriculture 

Organization/World Health 

Organization food standards program, 

and it is recognized as an international 

food safety standards-setting 

organization in trade agreements to 

which the United States is a party. EPA 

may establish a tolerance that is 

different from a Codex MRL; however, 

FFDCA section 408(b)(4) requires that 

EPA explain the reasons for departing 

from the Codex level. 

The Codex has not established a MRL 

for guar 

hydroxypropyltrimethylammonium 

chloride. 

C. Response to Comments 

One comment was received for a 

notice of filing from a private citizen 

who opposed the authorization to sell 

any pesticide that leaves a residue on 

food. The Agency understands the 

commenter’s concerns and recognizes 


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Federal Register / Vol. 78, No. 103 / Wednesday, May 29, 2013 / Rules and Regulations 32155 

that some individuals believe that no 

residue of pesticides should be allowed. 

However, under the existing legal 

framework provided by section 408 of 

the Federal Food, Drug, and Cosmetic 

Act (FFDCA), EPA is authorized to 

establish pesticide tolerances or 

exemptions where persons seeking such 

tolerances or exemptions have 

demonstrated that the pesticide meets 

the safety standard imposed by the 

statute. 

VI. Conclusions 

Therefore, an exemption from the 

requirement of a tolerance is established 

under 40 CFR 180.920 for guar 

hydroxypropyltrimethylammonium 

chloride (CAS No. 71329–50–5) when 

used as an inert ingredient (thickener/ 

drift reduction agent) in pesticide 

formulations applied to growing crops. 

VII. Statutory and Executive Order 

Reviews 

This final rule establishes a tolerance 

under FFDCA section 408(d) in 

response to a petition submitted to the 

Agency. The Office of Management and 

Budget (OMB) has exempted these types 

of actions from review under Executive 

Order 12866, entitled ‘‘Regulatory 

Planning and Review’’ (58 FR 51735, 

October 4, 1993). Because this final rule 

has been exempted from review under 

Executive Order 12866, this final rule is 

not subject to Executive Order 13211, 

entitled ‘‘Actions Concerning 

Regulations That Significantly Affect 

Energy Supply, Distribution, or Use’’ (66 

FR 28355, May 22, 2001) or Executive 

Order 13045, entitled ‘‘Protection of 

Children from Environmental Health 

Risks and Safety Risks’’ (62 FR 19885, 

April 23, 1997). This final rule does not 

contain any information collections 

subject to OMB approval under the 

Paperwork Reduction Act (PRA) (44 

U.S.C. 3501 et seq.), nor does it require 

any special considerations under 

Executive Order 12898, entitled 

‘‘Federal Actions to Address 

Environmental Justice in Minority 

Populations and Low-Income 

Populations’’ (59 FR 7629, February 16, 

1994). 

Since tolerances and exemptions that 

are established on the basis of a petition 

under FFDCA section 408(d), such as 

the tolerance in this final rule, do not 

require the issuance of a proposed rule, 

the requirements of the Regulatory 

Flexibility Act (RFA) (5 U.S.C. 601 et 

seq.), do not apply. 

This final rule directly regulates 

growers, food processors, food handlers, 

and food retailers, not States or tribes, 

nor does this action alter the 

relationships or distribution of power 

and responsibilities established by 

Congress in the preemption provisions 

of FFDCA section 408(n)(4). As such, 

the Agency has determined that this 

action will not have a substantial direct 

effect on States or tribal governments, 

on the relationship between the national 

government and the States or tribal 

governments, or on the distribution of 

power and responsibilities among the 

various levels of government or between 

the Federal Government and Indian 

tribes. Thus, the Agency has determined 

that Executive Order 13132, entitled 

‘‘Federalism’’ (64 FR 43255, August 10, 

1999) and Executive Order 13175, 

entitled ‘‘Consultation and Coordination 

with Indian Tribal Governments’’ (65 FR 

67249, November 9, 2000) do not apply 

to this final rule. In addition, this final 

rule does not impose any enforceable 

duty or contain any unfunded mandate 

as described under Title II of the 

Unfunded Mandates Reform Act of 1995 

(UMRA) (2 U.S.C. 1501 et seq.). 

This action does not involve any 

technical standards that would require 

Agency consideration of voluntary 

consensus standards pursuant to section 

12(d) of the National Technology 

Transfer and Advancement Act of 1995 

(NTTAA) (15 U.S.C. 272 note). 

VIII. Congressional Review Act 

Pursuant to the Congressional Review 

Act (5 U.S.C. 801 et seq.), EPA will 

submit a report containing this rule and 

other required information to the U.S. 

Senate, the U.S. House of 

Representatives, and the Comptroller 

General of the United States prior to 

publication of the rule in the Federal 

Register. This action is not a ‘‘major 

rule’’ as defined by 5 U.S.C. 804(2). 

List of Subjects in 40 CFR Part 180 

Environmental protection, 

Administrative practice and procedure, 

Agricultural commodities, Pesticides 

and pests, Reporting and recordkeeping 

requirements. 

Dated: May 20, 2013. 

Lois Rossi, 

Director, Office of Pesticide Programs. 

Therefore, 40 CFR chapter I is 

amended as follows: 

PART 180—[AMENDED] 

■ 1. The authority citation for part 180 

continues to read as follows: 

Authority: 21 U.S.C. 321(q), 346a and 371. 

■ 2. In § 180.920, the table is amended 

by alphabetically adding the following 

inert ingredient to read as follows: 

§ 180.920 Inert ingredients used preharvest; exemptions from the requirement 

of a tolerance. 

* * * * * 

Inert ingredients Limits Uses 

*******

Guar hydroxypropyltrimethylammonium chloride (CAS Reg. No. 71329–50–5) ..... ............. Thickener/drift reduction agent. 

*******

[FR Doc. 2013–12782 Filed 5–28–13; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

40 CFR Part 180 

[EPA–HQ–OPP–2012–0441; FRL–9386–5] 

Difenzoquat; Order Revoking 

Tolerances 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Order of revocation. 

SUMMARY: EPA is revoking all the 

tolerances for the pesticide difenzoquat. 

EPA previously required that data be 

submitted to support these tolerances 

and that notice of intent to submit that 

data be submitted to the Agency by 

March 19, 2013. No notice of intent to 

provide the required data was 

submitted. 


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