Form 1265-93 (Revised 1/05)

Previous editions are obsolete

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United States

ENVIRONMENTAL PROTECTION AGENCY

Washington, DC 20460

AGENCY USE ONLY

OMB Control No.: 2060-0226

Expires: 4/30/00

SNAP INFORMATION NOTICE

For Significant New Alternatives

Date of Receipt:

Date 90 Day Review Begins:

Date Review Completed:

CBI Status:

When completed send this form to:

MELISSA FIFFER

SNAP DOCUMENT CONTROL OFFICER

OFFICE OF AIR AND RADIATION, 6205 J

U.S. EPA

1200 PENNSYLVANIA AVE, NW

WASHINGTON, DC 20460

Enter the total number of pages in your SNAP information Notice: 24 Document Control Number

INTRODUCTION

GENERAL INSTRUCTIONS

This form may be used to submit information under the Significant New Alternatives Policy (SNAP) program for the review of 

alternatives to class I and class II ozone-depleting substances (ODS) under section 612 of the Clean Air Act. Submitters are 

required to provide this information on new substitutes to assist the Agency in assessing the acceptability of chemicals or 

processes that are considered alternatives for ODSs. A separate notice must be filed for each alternative you are submitting.

All submissions must be provided in three complete copies. If information is to be claimed as confidential, all confidential

information must be excised from one of the copies, which will be placed in the public docket; the other two copies must include 

the confidential material. If no claims of confidentiality are made for the submission, all copies must be identical.

The attached “Guidance Manual for the SNAP Information Notice” is designed to assist applicants in completing this form. The 

manual provides instructions on submitting a SNAP notice, asserting confidentiality claims, completing the notice form, sectorspecific data requirements, and submitting test data and supplemental information.

To facilitate Agency review of alternatives, this form must be filled out as completely as possible. Please provide all information 

requested to the extent that it is known or reasonably ascertainable. Make reasonable estimates if actual data is unavailable.

TYPE OF NOTICE (Check only one box)

Select the appropriate box identifying the type of notice submitted:

Manufacturer Submission: New alternative, Substance, or Formulation___________________________________________

Petition: New alternative, Substance, or Formulation__________________________________________________________

Petition: Revision of the Existing SNAP list_________________________________________________________________

Petition: Request to Grandfather Use of An Unacceptable Substitute_____________________________________________
Form 1265-93 (Revised 1/05)

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Part 1 - GENERAL INFORMATION

You must provide the identity of the alternative chemical of 

processes and the identity and percentages of all 

components in a blend and/or process, even if you claim the 

identity as confidential. You may authorize another person to 

submit the identity for you, but your submission will not be 

complete and review cannot begin until EPA receives this 

information.

Part II - ALTERNATIVE-SPECIFIC INFORMATION

 

Please indicate the sector(s) for which you are submitting 

information on the substitute by checking the appropriate 

boxes:

Refrigeration and Air Conditioning 

Foam Blowing 

Solvent Cleaning 

Fire Extinguishing 

and Explosion Prevention 

Sterilization 

Aerosols 

Adhesives, Coatings, and Inks 

Tobacco Expansion 

Pesticides 

You may need additional copies of Part II if there are several 

manufacturing, processing, or use operations that you will 

describe in this notice. Please reproduce these sections as 

needed.

If you substitute is also subject to review under FIFRA, 

provide the FIFRA Registration Number:

_____________________________

Part III - RELEASE AND EXPOSURE DATA

Please reproduce additional copies of Part III as necessary.

Part IV - LIST OF ATTACHMENTS

Please attach additional sheets if you do not have enough 

space on the form to fully answer a question. Label each 

continuation sheet with the corresponding section heading 

and the question. In part IV, list these attachments and any 

test data, other data, or any optional information that you 

include in this notice.

TEST DATA AND OTHER DATA

You are required to submit all test data in your possession or 

control and to provide a description of all other data known to 

you if these data are related to the health and environmental 

effects of the manufacture, processing, distribution in commerce, use, or disposal of the alternative. Standard literature 

citations may be submitted if they do not appear in the open 

scientific literature. Complete test data (in English), not summaries of data, must be submitted if they do not appear in the 

open literature. The following are test data and other data 

that might be submitted (see the Guidance Manual for a 

more complete list of data to be submitted.) Please indicate 

test data to be included in your submission notice by 

checking the appropriate boxes:

Health Effects Data  Yes No

Flammability Data  Yes  No

Environmental Effects 

Data  Yes  No

Environmental Fate 

Data  Yes  No

Risk Assessments  Yes  No

Test Data Not in the Possession/

Control of the Submitter  Yes  No

Other Data  Yes  No

LIST OF TEST DATA IS SHOWN IN PART IV - LIST OF

ATTACHMENTS
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Anyone submitting information must assert a claim of confidentiality at the time of submission for any data which are to be treated 

as Confidential Business Information (CBI). Substantiation of this claim must also be provided at this time. All information claimed 

as CBI will be treated in a manner consistent with 40 CFR Part 2, Subpart B. Failure to assert a claim of confidentiality at the time 

of submission may result in disclosure of information by the Agency without further notice.

To assert a claim on this form, circle or bracket the information you claim as confidential and mark the confidential box at the 

bottom of the page. Then provide substantiation of this claim on an attachment to the notice. If any information is claimed as 

confidential, you must provide a “sanitized” version of this notice, including attachments, to EPA with our submission. For 

additional information on claiming information as confidential, please see the Instructions Manual.

Information submitted as CBI may be accessed by companies designated as Authorized Representatives of the United States 

Environmental Protection Agency (EPA) under an EPA contract for the purpose of assisting EPA in the development and 

implementation of national regulations for the protection of stratospheric ozone, including the development of the SNAP program. 

These Authorized Representatives may have access to any information received by the Stratospheric Protection Division within 

EPA Office of the Atmospheric Programs for use in reviewing the need for possible control of any substance, practice, process or 

activity that may reasonably be anticipated to affect stratospheric ozone. Access to such information is necessary to ensure that 

these companies can complete the work required by the contract.

Authorized Representatives of the Administrator are subject to the provisions of 42 U.S.C. 7414(c) respecting confidential business 

information as implemented by 40 CFR 2.301(h).
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Part I - GENERAL INFORMATION

Section A - SUBMITTER IDENTIFICATION

1. (a) Person Submitting Notice (in U.S.)

______________________________________________________________________________________________________

Name of Authorized Official JOHN EDWARD POOLE Title MANAGING DIRECTOR

______________________________________________________________________________________________________

Company/Organization REFRIGERANT SOLUTIONS LIMITED

______________________________________________________________________________________________________

Mailing Address 8 MURIESTON ROAD, HALE, ALTRINCHAM Telephone & Fax Numbers 

 CHESHIRE WA 15 9ST, ENGLAND, UNITED KINGDOM 00 44 161 926 9876 FAX 9875

(b) Agent (if applicable)

______________________________________________________________________________________________________

Name of Authorized Official Title

______________________________________________________________________________________________________

Company/Organization

______________________________________________________________________________________________________

Mailing Address Telephone & Fax Numbers 

(c) Joint Submitter (if applicable)

______________________________________________________________________________________________________

Name of Authorized Official Title

______________________________________________________________________________________________________

Company/Organization

______________________________________________________________________________________________________

Mailing Address Telephone & Fax Numbers 

2. Technical Contact (in U.S. MR RON STEVENSON 

______________________________________________________________________________________________________

Name of Authorized Official MR DAVID STEVENSON Title 

 PRESIDENT 

 

______________________________________________________________________________________________________

Company/Organization RESOURCE SEPARATIONS

______________________________________________________________________________________________________

Mailing Address Rt 16, BOX 308A, Telephone & Fax Numbers 

 LONGVIEW, TEXAS TX75603 TEL: 903 643 3125

 FAX 903 643 3125

3. If you have had a prior communication with EPA concerning this notice, note the date and type of communication 

(letter, phone, etc.) and the EPA staff person’s name:

DAVID GOODWIN

E-mail 21 July 2011______________

Mark (X) this box if this page contains CBI ________ 
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Part I - GENERAL INFORMATION (continued)

Section B - ALTERNATIVE IDENTIFICATION

1. Commercial/Trade name (s) of alternative: RS-50

RS-50 IS A LOW GLOBAL WARMING REPLACEMENT FOR 404A AND R507 AND A NON OZONE DEPLETING 

REPLACMENT FOR R22. RS-502 IS SUITABLE FOR USE IN EXISTING EQUIPMENT AND USE BY ORIGINAL EQUIPMENT 

MANUFACTUERS.

RS-50 WAS ASSIGNED A DESIGNATED ASHRAE NUMBER OF R-442A WITH A SAFTEY CLASSIFICATION OF A1 BY 

ASHRAE STANDARD 34 COMMITTEE ON 28 June 2011

2. (a) Name of chemical(s) (preferably IUPAC nomenclature and/or process name. For blends, provide the percent composition 

of each constituents.

(b) Chemical Abstracts Service (CAS) registry number and molecular formula.

 (c) For alternative processes and technologies describe the technology an d and provide a diagram of the system. Also provide 

the information on any chemical constituents.

 (d) If you hold a patent on the substitute, provide the patent name and number and include a copy of the patent as an 

attachment. If you have submitted a patent application but have not been granted one yet, indicate the date submitted and the 

expected time frame for a response.

3. Generic chemical name (if chemical name of substitute is declared Confidential Business Information).

RS-50

4. Specific End-Use

 (a) Describe each end-use that may be reasonably anticipated for the alternative. Be sure to provide a broad description (e.g. 

terpene-based semi-aqueous solvent cleaner for electronic parts, or HFC substitute refrigerant for centrifugal chillers).

 

RS-50 IS A LOW GLOBAL WARMING REPLACEMENT FOR R404A AND R507 AND A NON OZONE DEPLETING

REPLACEMENT FOR R22 IN THE FOLLOWING APPLICATIONS:

SUPERMARKET REFRIGERATION

INDUSTRIAL PROCESS REFRIGERATION SYSTEMS

ICE SKATING RINKS

COLD STORAGE WAREHOUSES

REFRIGERATED TRANSPORT

RETAIL FOOD REFRIGERATION

COMMERCIAL ICE MACHINES

THE SIZE OF THE RS-50 CHARGE CAN VARY SUBSTANTIALLY ACCORDING TO THE END USE FROM APPROXIMATELY 1 

KG TO OVER 1000 KGS.

(b) Identify the ODS and the quantity of substitute (if applicable) needed to replace it for each end use in pounds (replacement 

ratio).

RS-50 CAN BE USED IN RETROFIT OF EXISTING EQUIPMENT AND ALSO IN NEW EQUIPMENT. THE REPLACEMENT 

RATIO FOR EACH END USE IS 0.9:I, NAMELY 0.9 LB OF RS-52 TO 1 LB OF R404A OR R22.

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Form 1265-93 (Revised 1/05)

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Mark (X) this box if this page contains CBI __________

Part I - GENERAL INFORMATION (continued)

Section B - ALTERNATIVE IDENTIFICATION (Continued)

5. (a) Identify each impurity that may reasonably be anticipated to be present in the chemical alternative as manufactured for 

commercial purposes. If there are unidentified impurities, enter “unidentified.”

 (b) Provide the CAS Registry Number if available.

 (c) Estimate the maximum weight percentage of each impurity. If there are unidentified impurities, estimate their total weight 

percentages.

6. Byproducts:

(a) Describe any byproducts or degradation products resulting from the manufacturer, processing, use or disposal of the 

chemical alternative or chemicals used in the new alternative. If there are unidentified byproducts/ degradation products 

enter “unidentified.”

 (b) Provide the CAS Registry Number if available.

 (c) Indicate where the byproduct/degradation product is formed (e.g. during manufacturing, during use, etc.) and the amount 

or rate at which it is formed.

(A) NO BYPRODUCTS OR DEGRADATION PRODUCTS RESULT FROM THE FORMULATION OF RS-50 BY THE BLENDING 

OF THE FIVE COMMERCIALLY AVAILABLE HIGH PURITY STARTING MATERIALS.

(B) & (C) HF (HYDROGEN FLUORIDE) GAS, CAS NO 7664-39-3, WILL BE THE MAIN DEGRADATION PRODUCT

RESULTING FROM THE DISPOSAL BY INCINERATION OF RS-50.

NB: RS-50 CAN BE RECOVERED, RECYCLED AND RECLAIMED PROVIDED THE REFRIGERANT HAS NOT BEEN MIXED 

WITH OTHER REFRIGERANTS.

Mark (X) this box if this page contains CBI __________
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Part II - ALTERNATIVE-SPECIFIC INFORMATION

Section A – PHYSICAL AND CHEMICAL PROPERTIES 

1. Molecular weight 81.7 g/mol 2. Physical state at 20° C GAS AT 1 ATMOSPHERE

3. Melting point N/A 4. Boiling point at 1 atm. Pressure -46.5°C (1)

5. Specific gravity 1.21* 

g/ml

6. Odor threshhold N/A mg/m3

7. Solubility using solvent @ temperature °C N/A 

g/L

8. Solubility in water @ temperature LOW 

SOLUBILITY 

 °C

9. Partition coefficients N/A Log Kow Log K∝

10. Vapor pressure @ 20° C 192 (1) psi 11. Critical temperature 

 82.4°C

12. Critical pressure 

 690 psi

13. Are spectra attached? N/A 14. Disassociation constant N/A

15. Particle size distribution N/A 16. Volatilization from soil N/A

17. Volatilization from water N/A 18. Viscosity @ 20 °C LIQUID 0.141 CENTIPOISE 

 VAPOUR 0.0126 (2)

 Cp

19. pH@concentration N/A 19. Thermal conductivity LIQUID: W/Mk*

 VAPOUR: W/mk(2)

21. Adsorption coefficient N/A 22. Flammability limits (LFL, UFL) NONE % vol

23. Flash point NONE 24. Heat of combustion N/A

25. Maximum pressure rise N/A 26. Maximum rate of pressure rise N/A 

27. Other (specify) 

(1) CAPACITY

(2) COEFFICIENTS OF PERFORMANCE

(3) PRESSURE/TEMPERATURE TABLE

(4) THERMODYNAMIC TABLES

(5 )PRESSURE/ENTHALPY DIAGRAM

SEE PART IV - LIST OF ATTACHMENTS

 

NB: (1) BUBBLE POINT

 (2) 1 ATMOSPHERE
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28. Provide any information on flammability concerns. For example, if any abatement techniques are being used to minimize the 

risks associated with flammable substances or mixtures, detail those techniques below. If a substitute is flammable, an 

assessment of overall risk in each end-use may be required. (See Guidance Manual for sector-specific data requirements 

for flammable substances).

RS-50 IS NON FLAMMABLE AT WORST CASE FORMULATION AND WORST CASE FRACTIONATION AS 

PER ASHRAE STANDARD 34 ASTM 681-98 FLAMMABILITY TEST

FLAMMABILITY TEST DATA & WORST CASE FRACTIONATION TEST DATA DURING LEAKAGE ARE 

DETAILED IN ATTACHED REPORT BY SAFET CONSULTING ENGINEERS INC. SEE PART IV – LIST OF 

ATTACHMENTS

Mark (X) this box if this page contains CBI __________
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Part II - ALTERNATIVE-SPECIFIC INFORMATION (Continued)

Section B - ATMOSPHERIC INFORMATION

1. Ozone-depletion potential (ODP):

 (a) Provide the 100 year ODP of the alternative relative to CFC-11, if known. If the substitute is a blend, provide the ODPs of 

individual constituents.

 

 R134a R125 R32 R227ea R152a

ODP (100 YEARS CFC 11) ZERO ZERO ZERO ZERO ZERO

 

(b) Provide source of ODP or any additional data on the ODP of the alternative (e.g. atmospheric lifetime, chlorine or bromine 

loading potentials). Reference the source of this information and attach any supporting documentation.

ATMOSPHERIC LIFETIME (YEARS) 14 29 4.9 34.2 1.4

CHLORINE LOADING NIL NIL NIL NIL NIL 

BROMINE LOADING NIL NIL NIL NIL NIL 

SOURCE OF DATA:

INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE, CLIMATE CHANGE 1997 AND US EPA, 

2. Global Warming Characteristics:

 (a) Provide the alternative’s global warming potential (GWP) relative to carbon dioxide over 100-, 500-, and 1000- year time 

horizons, if known. If the substitute is a blend, provide the GWPs of the individual constituents.

 (b) If known, provide the alternative’s expected impact on energy efficiency relative to the substance it is replacing (e.g. +/- X%) 

and results of any testing or modeling done (both theoretical and actual testing).

 (c) Provide source of GWP or any additional data on the GWP of the alternative, including the atmospheric lifetime, infrared 

absorption spectrum, and infrared absorption capacity. If the alternative (e.g. CO2 captured from a stream of waste gas as a byproduct of fermentation).

 R134a R125 R32 R227ea R152a

(a) GWP (100 YEARS ITH) 1430((1) 3500(1) 675(1) 3220(1) 124(1)

(c) MODEL CALCULATIONS INDICATE A HIGHER ENERGY EFFICIENCY AND SIMILAR CAPACITY TO R404A .SEE PART IV 

– LIST OF ATTACHMENTS

(1) iINTERGOVERNMENTAL PANEL ON CLIMATE CHANGE, CLIMATE CHANGE 2007. SEE PART IV – LIST OF 

ATTACHMENTS
Form 1265-93 (Revised 1/05)

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Mark (X) this box if this page contains CBI __________
Form 1265-93 (Revised 1/05)

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Part II - ALTERNATIVE-SPECIFIC INFORMATION (continued)

Section C - OTHER STATUTES AND STANDARDS

1. Describe whether an d how the alternative is regulated under other environmental regulatory statutes, for example other titles 

under the Clean Air Act (CAA), the Clean Water Act (CWA), the Safe Drinking Water Act (SDWA), the Resource Conservation 

and Recovery Act (RCA), the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), the Toxic Substances Control Act 

(TSCA), the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), the Emergency Planning and 

Community Right-to-Know Act (EPCRA, also known as SARA Title III), and state and local laws. List any concentration-based or 

other numerical standards to which the alternative is subject under the above standards and regulations.

REGULATION OF THIS HFC SUBSTITUTE BLEND UNDER OTHER ENVIRONMENTAL REGULATORY STATUTES WILL BE 

COMPARABLE TO THOSE THAT APPLY TO OTHER HFC REFRIGERANTS, NAMELY:

U.S. CLEAN AIR ACT AMENDMENTS 1990

AND FOR APPLICATION AS A REPLACEMENT IN EXISTING EQUIPMENT, THE PROVISIONS OF:

U.S. CLEAN AIR ACT AMENDMENTS 1990 SECTION 608

APPLY TO THE REMOVAL, RECOVERY AND RECYCLING OF THE EXISTING HCFC AND/OR CFC CHARGE BEING 

REPLACED.

ANY U.S. REGULATIONS IMPLEMENTING THE KYOTO PROTOCOL ON CLIMATE CHANGE, RELATED TO EMISSIONS OF 

HFCs WILL APPLY TO THIS BLEND.

2. Describe whether and how the alternative is regulated under health and safety related statutory authorities, such as those 

implemented by the Food and Drug Administration (FDA), the Occupational Safety and Health Administration (OSHA), the 

Department of Transportation (DOT), and state and local laws. List any concentration-based or other numerical standards to 

which the alternative is subject under the above statutes and regulations. Also list any other standard-setting organizations such 

as the National Fire Prevention Association (NFPA) or the American Society of Heating, Refrigerating, and Air Conditioning 

Engineers (ASHRAE), by which the substitute is evaluated.

OTHER REGULATORY REQUIREMENTS FOR HANDLING AND TRANSPORTATION APPLY AS FOR LIQUEFIED 

REFRIGERANT GASES UNDER PRESSURE.

OSHA EXPOSURE LIMITS AND EUROPEAN OCCUPATIONAL EXPOSURE LIMITES FOR THE COMPONENTS OF THE 

RS-50 BLEND HAVE BEEN USED TO DETERMINE THE EXPOSURE LIMIT FOR THE BLEND.

MATERIAL SAFETY DATA SHEET ATTACHED.

NFPA 704 HAZARD SIGNALS ARE RECOMMENDED BY REFRIGERANT SOLUTIONS LIMITED AS [H-F-R-S] 2-0-0 [NO 

SPECIAL HAZARD] BASED ON TOXICITY, FLAMMABILITY AND REACTIVITY DATA FOR THE COMPONENTS AND THE 

FORMULATED BLEND.

Mark (X) this box if this page contains CBI __________
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Part II - ALTERNATIVE-SPECIFIC INFORMATION (continued)

Section D - COST AND AVAILABILITY OF THE ALTERNATIVE

1. Estimate the cost per pound for the substitute chemical. For alternative processes and technologies, describe installation 

costs associated with the alternative.

APPROXIMATE FORMULATION COST OF RS-50 IS US$7 PER LB.

IN NEW EQUIPMENT, THE BLEND CAN BE USED TO REPLACE R404A, R507 AND R22 IN NEW EQUIPOMENT. IN THE 

CASE OF R22 NO RE-NGINEERING OF THE EQUIPMENT IS NECESSARY. IN THE CASE OF R404A AND R507, THE 

EXPANSION DEVICE WILL NEED TO BE REDUCED TO REFLECT THE LOWER MASS FLOW RATE, WHICH IS SIMILAR TO 

R22. 

EXISTING EQUIPMENT “DROP-IN”, CONVERSION INSTALLATION COSTS ARE MADE UP OF THE SERVICING COSTS, 

INVOLVING RECOVERY OF EXISTING R22 AND/OR R404A/R507 CHARGE AND RECHARGE WITH RS-50 AND 

CONSEQUENT SYSTEM OPTIMISATION. TOTAL COST IS THEREFORE COST OF REFRIGERANT CHARGE AND LABOUR 

ONLY. 

2. Provide information on production of the substitute. Include estimates on:

(a) Year substitute will be available if not currently produced.

(b) Total pounds production per year (current figure).

(c) Years to maximum market penetration.

I(d) Estimated percentage of market at market saturation.
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3. Describe any new equipment an d use profiles. If retrofitting of existing equipment is required, detail changes in technologies 

needed to use the alternative and address any materials compatibility issues. Provide information on each end-use and capital 

costs associated with the substitute or alternative process. Include cost of equipment and/or any new materials, equipment 

lifetime, changes in labor and energy costs.

RS-50 IS A LOW GLOBAL WARMING REPLACEMENT FOR R404A AND R507 AND A NON OZONE DEPLETING 

REPALCEMENT FOR R22. RS-50 IS SUITABLE FOR USE IN NEW AND EXISTING EQUIPMENT

RS-52 CAN BE USED WITH NEW EQUIPMENT DESIGNED FOR R404A & R507 OR AS A RETROFIT DROP-IN 

REPLACEMENT IN EXISTING R22 & R502 EQUIPMENT.

RS-50 DOES NOT REQUIRE THE REDESIGN OF EQUIPMENT. IN THE CASE OF R404A AND R507, THE EXPANSION 

DEVICE WILL NEED TO BE REDUCED DUE TO THE LOWER MASS FLOW RATE, WHICH IS SIMILAR TO R22

NO SIGNIFICANT CAPITAL COSTS ARE INVOLVED WHEN USING RS-50 AS A REPLACEMENT IN EITHER NEW OR 

EXISTING EQUIPMENT.

RS-50 IS COMPATIBLE WITH ALL MATERIALS COMMONLY USED IN SYSTEMS DESIGNED AND CHARGED WITH R22, 

R404A AND R507.

INFORMATION ON REFRIGERATION PERFORMANCE AND CAPACITY IS ATTACHED IN PART IV - LIST OF 

ATTACHMENTS. IT IS EXPECTED THAT RS-50 WILL SHOW A HIGHER ENERGY EFFICIENCY THAN R404A AND R507 

WHILE HAVING A SIMIILAR CAPACITY.

Mark (X) this box if this page contains CBI __________

Part III - RELEASE AND EXPOSURE DATA

Section A - TOXICITY AND HAZARD INFORMATION

For chemical alternatives and for chemicals used with alternative processes, summarize below (and attached supporting 

information) the acute and chronic toxicity of the substitute and of its constituent chemicals on any organism (e.g. human and/or 

other mammals, fish, wildlife, and plants), if available. Include any data on impurities and degradation products if known. Also 

include information on any “Allowable Exposure Limits” (AELs) that have been set for the substitute. In addition, please attach a 

copy or facsimile of any hazard warning statement, label, material safety data sheet, or other information which will be provided to 

any person who is reasonably likely to be exposed. (See Guidance Manual for sector-specific data requirements).

R134a ACUTE TOXICITY LC50: 4 HOUR (RAT) - >359,300 PPM (1)

 CARDIAC SENSITISATION NOEL - 250,000 PPM (1)

 SUBCHRONIC &

 CHRONIC TOXICITY TERATOGENIC NOEL (RAT) – 40,000 PPM (1)

 SUBCHRONIC INHALATION (RAT) NOEL – 40,000 PPM (1)

 

R125 ACUTE TOXICITY LC50: 4 HOUR (RAT) - >769,000 PPM (2)

 CARDIAC SENSITISATION THRESHOLD (DOG) – 75,000 PPM (1)

 SUB-CHRONIC &

 CHRONIC TOXICITY TERATOGENIC NOEL (RAT & RABBIT) – 50,000 PPM (1)

 SUBCHRONIC INHALATION (RAT) NOEL – 50,000 PPM (1)

 CHRONIC NOEL – 10,000 PPM (1)

 

R32 ACUTE TOXICITY LC50: 4 HOUR (RAT) 760,,000 PPM (1)

R227ea ACUTE TOXICITY LC50: 4 HOUR (RAT) 788,696 OOM (1)

R152ea ACUTE TOXICITY LC50: 4 HOUR (RAT) 400,000 OOM (1)
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THE FIVE CONSTITUENTS OF RS-50, WHICH ARE R134a, R125, R32, R227ea AND R152a, ALL HAVE A VERY LOW ACUTE 

TOXICITY BY INHALATION.

R-32, R-125, R-134A, R-152A, AND R-227EA HAVE CLASSIFIED AS A FOR TOXICITY BY ASHRAE 34. ACCORDINGLY, A 

BLEND OF ONLY THESE COMPONENTS WARRANTS THE SAME CLASSIFICATION IN THE ABSENCE OF COMPOUNDING 

OR OTHER INTERACTIVE EFFECTS, NEITHER OF WHICH IS APPARENT. ANALYSIS OF THE WORST CASE OF 

FRACTIONATION FOR TOXICITY IS NOT WARRANTED FOR R-32/125/134A/152A/227EA (31.0/31.0/30.0/3.0/5.0) SINCE THE 

OEL CONCENTRATION CONSISTENT WITH A TLV-TWA (AND ALSO CONSISTENT WITH A PEL) FOR EACH COMPONENT 

IS 1,000 PPM. ACCORDINGLY, A FRACTIONATION ANALYSIS FOR THE BLEND ALSO WOULD RESULT IN A CALCULATED 

VALUE OF 1000 PPM V/V CONSISTENT WITH A TLV-TWA FOR ANY CASE OF FRACTIONATION. THEREFORE, THE 

WORST CASE OF FRACTIONATION FOR TOXICITY OF R- 32/125/134A/152A/227EA (31.0/31.0/30.0/3.0/5.0) THEREFORE 

JUSTIFIES CLASSIFICATION AS CLASS A FOR TOXICITY.

A TWA (8 HOURS) OF 1,000 PPM HAS BEEN PROPOSED FOR RS-50 WHICH IS BASED ON THE ABOVE DATA DUE TO, 

THE RELATIVE NON-TOXIC INHALATION PROPERTIES OF THE FIVE CONSTITUENTS IN THE FORMULATED BLEND.

PRODUCT SAFETY DATA SHEETS FOR RS-50, R134a, R125, R32, R227ea AND R152a ARE ATTACHED. SEE PART IV –

LIST OPF ATTACHMENTS.

RECOVERY

RS-50 CAN BE RECOVERED FROM REFRIGERATION EQUIPMENT USING APPROVED REFRIGERATION RECOVERY 

PROCEDURES AND EQUIPMENT. REFRIGERANT SOLUTIONS LIMITED WILL PROVIDE A FULL RECLAMATION SERVICE 

THROUGH ITS DISTRIBUTOR/S.

RECOVERY

RS-50 CAN BE RECOVERED FROM REFRIGERATION EQUIPMENT USING APPROVED REFRIGERATION RECOVERY 

PROCEDURES AND EQUIPMENT. REFRIGERANT SOLUTIONS LIMITED WILL PROVIDE A FULL RECLAMATION SERVICE 

THROUGH ITS DISTRIBUTOR/S.

RECLAMATION

RS-50 CAN AND SHOULD BE RECLAIMED BY THE FOLLOWING:

(1) RECLAMATION THROUGH PROPRIETARY RECLAMATION EQUIPMENT (EG REFRIGERANT SERVICES INC). 

THE BLEND CAN BE CLEANED AND DRIED THROUGH THIS TYPE OF EQUIPMENT ON A FULL BATCH PROCESSING 

TRANSFER BASIS. THIS ENSURES THAT THE FULL BATCH COMPONENTS ARE COLLECTED TOGETHER. THE 

BLEND IS THEN ANALYSED FOR COMPOSITION AND ANY DIVERGENCE FROM THE SALES SPECIFICATION WILL 

BE CORRECTED BY THE ADDITION OF THE APPROPRIIATE COMPONENT. THE RECOVERED WASTE MATERIAL (IE 

OI, WATER, PARTICULATES) WILL BE DISPOSED OF ACCORDING TO THE WASTE REGULATIONS APPLYING.

(2) RECLAMATION BY DISTILLATION

THE BLEND CAN BE RECLAIMED BY POT TO POT BATCH DISTILLATION. THIS ENSURES THAT THE TOTAL 

COMPONENTS ARE RECOVERED FROM THE PROCESS AND THE DISTILLED BATCH CAN BE ANALYSED FOR 

CONFORMANCE TO THE COMPOSITION SPECIFICATION. ANY DIVERGENCE WILL BE CORRECTED TO BRING THE 

BLEND BACK TO SPECIFICATION.

(3) DISPOSAL

WHEN THE RS-50 BLEND MATERIAL IS NO LONGER REQUIRED, OR IS CONTAMINATED WITH OTHER GASES 

THAN THE FOUR COMPONENTS, RENDERING IT UNSUITABLE FOR RECLAMATION BY EITHER OF THE ABOVE 

METHODS, THE MATERIAL WILL BE DESTROYED. DESTRUCTION WILL BE CARRIED OUT IN INCINERATORS, 

APPROVED AND REGISTERED BY THE AUTHORITIES FOR THE DESTRUCTION OF FLUOROCARBON COMPOUNDS 

IN LIGUEFIED FORM.

REFRIGERANT SOLUTIONS LIMITED WILL TAKE ALL STEPS NECESSARY TO ENSURE THAT ANY RECLAMATION OR 

DESTRUCTION IS CARRIED OUT IN ACCORDANCE WITH THE ABOVE AND IIN CONFORMANCE WITH APPROPRIATE 

STATE AND FEDERAL LAWS.
Form 1265-93 (Revised 1/05)

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15

Section B - ENVIRONMENTAL RELEASE AND DISPOSAL AT MANUFACTURE

For each manufacturing site:

 (a) Identify all site locations (i.e. name and address) for each chemical manufacturing process.

 (b) Identify all site locations for manufacturing of products using substitutes (e.g. refrigerators containing the substitutes).

 (c) Identify the points of release and/or exposure during the manufacture of: (i) the substitute and/or (ii) products containing the 

substitutes.

 (d) Provide information on the magnitude of release if available, along with the media to which the substitute is released (e.g. 

indoor air, outdoor air, water, land).

(a) REFRIGERANT SOLUTIONS LIMITED

8 MURIESTON RAOD

HALE

ALTRINCHAM

CHESHIRE WA15 9ST

ENGLAND

UNITED KINGDOM

RESOURCE SEPARATIONS

Rt 16

BOX 308QA

LONGVIEW

TEXAS 7X 75603

USA

REFRIGERANT SERVICES INC

15 WILLIAMS AVENUE

DARTMOUTH

HALIFAX

NOVA SCOTIA B33 1X3

CANADA

(b) NO SITE LOCATIONS AT PRESENT FOR MANUFACTURE OF PRODUCTS USING RS-50. THIS NEW REFRIGERANT

WILL BE USED AT MANY SERVICE SITES. 

 

 

 

 

 

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Part III - RELEASE AND EXPOSURE DATA

Section C- OCCUPATIONAL EXPOSURE AT MANUFACTURE

For each manufacturing site (manufacturing of substitutes and/or products containing substitutes):

 (a) Describe the activities in which workers may be exposed to chemicals.

 (b) Describe any protective equipment and engineering controls used to protect workers (e.g. goggles, gloves, chemical 

hoods).

 (c) Indicate the physical form of chemicals at the time of handling/exposure (e.g. solid, liquid, gas).

 (d) Estimate average and maximum numbers of workers involved in each activity.

 (e) Estimate average and maximum duration of activity for any worker, in terms of (1) hour/day and (2) days/year.

 (f) Enter the contact pathway (e.g. ingestion, inhalation, dermal).

 (g) Estimate the average and high-end exposure concentrations (separated by a /), being sure to provide units of measure.

(a) THE FORMUATION AND PACKAGING FACILITIES FOR THE PRODUCTION OF RS-50 ARE DESIGNED AND 

CONSTRUCTED TO ENSURE NEGLIGIBLE EMISSIONS. THE FACILITIES COMPLY WITH UK REQUIREMENTS FOR 

EMISSIONS AND SAFETY AND CONSEQUENTLY WORKERS ARE NOT EXPOSED TO EITHER RS-50 OR ITS 

CONSTITUENTS.

(b) PERSONAL PROTECTIVE EQUIPMENT ACCORDING TO THE RS-50 PRODUCT SAFETY DATA SHEET IS WORN 

DURING MANUFACTURE OF RS-52, IE EYE PROTECTION AND IMPERVIOUS GLOVES. ALL EQUIPMENT IS 

EARTHED.
Form 1265-93 (Revised 1/05)

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(c) ALL THE COMPONENTS OF RS-50 ARE LIQUEFIED GASES UNDER PRESSURE

(d) THE AVERAGE NUMBER OF WORKERS EMPLOYED IN THE MANUFACTURE OF RS-50 IS TWO. THE MAXIMUM 

NUMBER OF WORKERS IS FOUR.

(e) THE WORKERS OPERATE A ROTATION SYSTEM WORKING A MAXIMUM 8 HOUSRS/DAY AND APPROXIMATELY 100 

DAYS/YEAR.

(f) THE CONTACT PATHWAY WOULD BE INHALATION SHOULD ANY RELEASE OCCUR.

(g) UNDER NORMAL CONDITIONS OF FORMULATION AND PACKAGING, THE ESTIMATED EXPOSURE 

CONCENTRATION IS NEGLIGIBLE. THE RECOMMENDED OCCUPATIONAL LEVEL (TWA) FOR RS-50 IS 1000 PPM AS 

QUOTED IN THE PRODUCT SAFETY DATA SHEET. 

Section D - ENVIRONMENTAL RELEASE AND DISPOSAL IN END-USE
Form 1265-93 (Revised 1/05)

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17

For each end-use of a substitute: 

(a) Provide the estimated amount (in kg/day) of each chemical released directly to the environment (e.g. as a hazardous 

waste or 

Waste water effluent) at a site using the substitute (e.g. in products containing the substitute and processes using the 

substitute).

 (b) Identify the media (indoor air, outdoor air, land, water) to which the chemical will be released from that release point.

 (c) Describe the control technology used to limit release; estimate the amount released to the environment with the control 

 technology in place to limit release. If the substitute is to be disposed of, indicate the method and location of disposal.

 (d) Are releases covered under RCRA? If so, identify the RCRA hazardous waste codes.

 (e) Identify the appropriate number of sites expected to use the substitute.

 (f) Provide information on recycling of the substitute. Describe any associated costs and equipment.

(a) RS-50 IS A REPLACEMENT FOR R22, R404A AND R507 FOR USE IN LEAK-FREE REFRIGERATION AND AIR 

CONDITIONING SYSTEMS. RS-50 CAN BE RECOVERED AND RECYCLED. RESTRICTIONS ON VENTING TO 

ATMOSPHERE SHOULD BE OBSERVED, AND RELEASES DURING CHARGING AND MAINTENANCE WILL BE 

MINIMAL.

(b) ANY ACCIDENTIAL RELEASE WILL BE EITHER INDOOR AIR OR OUTDOOR AIR DEPENDING ON THE LOCATION OF 

THE EQUIPMENT AND POSITION OF THE LEAK.

(c) GOOD HOUSEKEEPING AND FREQUENT INSPECTION WILL LIMIT RELEASES. REFRIGERANT SOLUTIONS LIMITED 

IN THE UK, RESOURCE SEPARATIONS IN THE USA AND REFRIGERANT SERVICES INC IN CANADA WILL TAKE 

BACK RECOVERED RS-50 FOR RECYCLING AND RECLAMATION. IF RS-50 IS MIXED WITH OTHER REFRIGERANTS 

THEN THE MIXTURE CAN BE DESTROYED BY HIGH TEMPERATURE INCINERATION IN AN APPROVED FACILITY 

CAPABLE OF ABSORBING AND NEUTRALISING THE BY-PRODUCTS.

(d) RS-50 IS NOT A HAZARDOUS WASTE.

(e) FEW MANUFACTURING SITES ARE EXPECTED TO USE RS-50. HOWEVER, MANY REFRIGERATION SERVICE 

SITES ARE EXPECTED TO USE RS-50.

(f) RS-50 CAN BE RECOVERED, RECYCLED AND RECLAIMED USING STANDARD REFRIGERATION EQUIPMENT IN A 

SIMILAR MANNER AND AT A SIMILAR COST TO A SINGLE FLUID REFRIGERANT.

Mark (X) this box if this page contains CBI __________
Form 1265-93 (Revised 1/05)

Previous editions are obsolete

18

Part III - RELEASE AND EXPOSURE DATA (continued)

Section E - OCCUPATIONAL EXPOSURE AT END-USE

For all end-use scenarios of the substitute (end-uses utilizing the substitute in products and/or processes):

(a) Describe the activities in which workers may be exposed to chemicals.

(b) Describe any protective equipment or engineering controls used to protect workers (e.g. goggles, gloves, chemical hoods).

(c) Indicate the physical form of chemicals at the time of handling/exposure (e.g. solid, liquid, gas).

(d) Estimate average and maximum numbers of workers involved in each activity.

(e) Estimate average and maximum duration of activity for any worker, in terms of (1) hours/day and (2) days/year

(f) Enter the contact pathway (e.g. ingestion, inhalation, dermal).

(g) Estimate the average and high-end exposure concentrations (separated by a /), being sure to provide units.

(a) RS-50 IS A REFRIGERANT TO REPLACE R22, R404 AND R507 AND WILL BE HANDLED AND USED IN THE SAME 

MANNER AS OTHER REFRIGERANTS. GOOD HOUSEKEEPING, SAFE PRACTICES AND OBSERVATION OF 

REGULATIONS ON VENTING TO ATMOSPHERE WILL AVOID END-USERS BEING EXPOSED TO RS-50 AND ITS 

CONSTITUENTS.

(b) INFORMATION ON PERSONAL PROTECTIVE EQUIPMENT HANDLING AND THE RECOMMENDED EXPOSURE LEVEL 

(TWA) OF 1000 PPM IS GIVEN IN THE PRODUCT SAFETY DATA SHEET. HOWEVER, LOCAL CONCENTRATIONS 

DURING CHARGING AND SERVICING OF EQUIPMENT WILL BE CONSIDERABLY BELOW THE TWA.

(c) RS-50 IS HANDLED AS A LIQUEFIED GAS UNDER PRESSURE.

(d) SITE SERVICE WORK INVOLVING RS-50 IS NORMALLY UNDERTAKEN BY INDIVIDUAL REFRIGERATION AND AIR 

CONDITIONING ENGINEERS.

(e) THE DURATION FOR HANDLING RS-50 BY WORKERS INVOLVED IN EQUIPMENT MANUFACTURE OR SERVICE 

WORK IS LIMITED TO THE RELATIVELY SHORT TIME OF CHARGING THE NEW REFRIGERANT.

(f) THE CONTACT PATHWAY WOULD BE INHALATION SHOULD ANY RELEASE OCCUR.

(g) UNDER NORMAL CONDITIONS OF END-USE, THE EXPECTED EXPOSURE CONCENTRATION IS NEGLIGIBLE.
Form 1265-93 (Revised 1/05)

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Section F - CONSUMER EXPOSURE

For each end-use of a substitute:

 (a) Identify the potentially exposed population (e.g. indoor residents).

 (b) Identify the exposure medium (e.g. air).

 (c) Enter the contact pathway (e.g. ingestion, inhalation, dermal).

 (d) Enter the exposure point of concentration. Provide (1) average and (2) high-end estimates.

(a) RS-50 IS A REPLACEMENT REFRIGERANT FOR USE IN LEAK-FREE REFRIGERATION AND AIR CONDITIONING 

SYSTEMS. HENCE, EXPOSURE TO THE GENERAL CONSUMER IS EXTREMELY REMOTE. SHOULD EMISSIONS 

OCCUR, THEY WOULD MOST LIKELY BE THE RESULT OF EQUIPMENT LEAKAGE, PARTICULARLY AT THE HIGH 

PRESSURE SIDE OF THE EQUIPMENT. AS LEAKS TEND TO DEVELOP GRADUALLY AND THE HIGH PRESSURE 

SIDE OF LARGER EQUIPMENT IS USUALLY REMOTE FROM GENERAL CONSUMERS AND THE PUBLIC AND 

LOCATED IN WELL VENTILATED AREAS, THE LIKELY POPULATION TO BE EXPOSED IS EXTREMELY SMALL.

(b) THE EXPOSURE MEDIUM WOULD BE AIR.

(c) THE CONTACT PATHWAY WOULD BE INHALATION SHOULD EXPOSURE OCCUR.

(d) THE CONCENTRATION AT THE EXPOSURE POINT IS EXPECTED TO BE EXTREMELY LOW AND VERY 

INFREQUENT, IF AT ALL.

Mark (X) this box if this page contains CBI __________
Form 1265-93 (Revised 1/05)

Previous editions are obsolete

20

Part III - RELEASE AND EXPOSURE DATA (continued)

Section G - GENERAL POPULATION EXPOSURE (optional)

For manufacturing of substitutes and products containing substitutes:

 (a) Identify and number potential exposure points.

 (b) For each exposure point described in (a), identify the potentially exposed population (e.g. residents at the fenceline).

 (c) Identify the contact pathway (e.g. ingestion, inhalation, dermal).

 (d) Identify the exposure medium (e.g. air, water).

 (e) Enter the exposure point concentration (mg/m3

). Provide (1) average and (2) high-end estimates.

THE GUIDANCE DOCUMENT STATES: “ YOU DO NOT NEED TO PROVIDE THE INFORMATION REQUESTED IN THIS 

SECTION UNLESS YOU CHOOSE TO DO SO.”

(a)&(b) IT IS NOT ANTICIPATED THAT THE GENERAL PUBLIC WOULD COME INTO DIRECT CONTACT WITH PARTS 

CONTAINING RS-50. EMISSIONS FROM EQUIPMENT LEAKAGE, OR EVEN FAILURE, WOULD BE CONFINED TO THE 

RELATIVELY SMALL AREA AROUND THE EQUIPMENT. HENCE, EXPOSURE TO THE GENERAL PUBLIC WOULD BE 

EXPECTED TO BE NEGLIGIBLE AND VIRTUALLY ZERO.

(a) THE CONTACT PATHWAY WOULD BE INHALATION SHOULD EXPOSURE OCCUR.

(b) THE EXPOSURE MEDIUM WOULD BE AIR.

(c) THE CONCENTRATION AT THE EXPOSURE POINT IS EXPECTED TO BE VIRTUALLY ZERO. 

Mark (X) this box if this page contains CBI __________
Form 1265-93 (Revised 1/05)

Previous editions are obsolete

21

Part IV - LIST OF ATTACHMENTS

List below any attachments that complete the responses to the questions on this form or that provide additional information that 

may assist EPA’s review of the alternative under Section 612 of the Clean Air Act. Also, provide citation for information already 

submitted to EPA as part of past regulatory and information activities, as well as for other information that could not be included 

with this submission. If you have attached continuation pages, describe the Part, Section and question number being continued. 

Attach additional pages if necessary.

Attachment Name Question # Number of 

Pages

CBI

RS-50 PRESSURE & TEMPERATURE TABLES APPENDIX 2 PTII SECTION A 

Q27

4

RS-50- THERMODYNAMIC TABLES APPENDIX 3

PTII SECTION A

Q27 

21

RS-50 PRESSURE ENTHALPY DIAGRAM APPENDIX 4

PTII SECTION A

Q27 1

IPCC 2007 GLOBAL WARMING POTENTIALS APPENDIX 7

PTII SECTION B Q2

1

RS-50 RETROFIT PROCEDURE FOR R404A & R507 APPENDIX 8 PTII SECTION D Q3 3

RS-50 RETROFIT PROCEDURE FOR R22 APPENDIX 9 PTII SECTION D Q3 2

RS-50 CAPACITY APPENDIX 10

PTII SECTION A

Q27

1

RS-50 COEFFICIENT OF PERFORMANCE APPENDIX 11 PTII SECTION A

Q27

1

RS-50 PHYSICAL PROPERTIES APPENDIX 13

PTII SECTION D Q3 1

RS-50 PRODUCT SAFETY DATA SHEET APPENDIX 14

PTIII SECTION A

8

HFC134a MATERIAL SAFETY DATA SHEET APPENDIX 15 PTIII SECTION A 9

HFC125 MATERIAL SAFETY DATA SHEET APPENDIX 16 PTIII SECTION A 7

R227ea MATERIAL SAFETY DATA SHEET APPENDIX 17 PTIII SECTION A 5

R32 MATERIAL SAFETY DATA SHEET APPENDIX 18 PTIII SECTION A 7

R152a MATERIAL SAFETY DATA SHEET APPENDIX 19 PTIII SECTION A 9

PRODUCT STEWARDHSIP APPENDIX 20 PTIII SECTION A 1

PAFT HFC125 TOXICITY SUMMARY APPENDIX 21 PTIII SECTION A 1

PAFT HFC134a TOXICITY SUMMARY APPENDXI 22 PTIII SECTION A 2

PAFT HFC32 TOXICITY SUMMARY APPENDIX 23 PTIII SECTION A 1

PAFT HFC227ea TOXICITY SUMMARY APPENDIX 24 PTIII SECTION A 2

Mark (X) this box if this page contains CBI __________
Form 1265-93 (Revised 1/05)

Previous editions are obsolete

22

Part V – CERTIFICATION

I certify to the best of my knowledge and belief that:

1. All information provided in this notice is complete and truthful as of the date of the submission.

2. I am submitting with this notice all test data in my possession or control and a description of all other data 

known to or reasonably ascertainable by me.

3. If this is a submission of a new alternative, the company name in Part I, Question 1a of this notice:

 (a) intends to manufacture, formulate, import, market, or use a new alternative to a Class I or Class II ozonedepleting substance which is identified in Part I, Section B, Question 2.

 (b) seeks an acceptability determination on a new alternative(s) to a Class I or Class II ozone-depleting 

substance, which is identified in Part I, Section B, Question 2.

4. The accuracy of the statements made in this notice reflects my best prediction of the anticipated facts 

regarding the alternative described herein. Any knowing and willful misinterpretation is subject to criminal penalty 

pursuant to section 113(c) of the Clean Air Act and 18 U.S.C.§1001.

Signature and Title of Authorized Official (Original Signature Required): 

 

 Date:

 

Signature of Agent (Where Applicable): Date

For persons filing a SNAP Information Notice, the reporting burden is estimated to average 150 hours 

per year. For persons filing a TSCA/SNAP Addendum, the reporting burden is estimated to average 46 

hours her year. Burden means that total time, or financial resources expended by persons to generate, 

maintain, retain, or disclose or provide information to or for a Federal agency. This includes the time 

needed to review instruction; develop, acquire, install, and utilize technology and systems for the 

purposes of collecting, validating, and verifying information; adjust the existing ways to comply with any 

previously applicable instructions and requirements; train personnel to be able to respond to a 

collection of information; search data sources; complete and review the collection of information; and 

transmit or otherwise disclose the information. An agency may not conduct or sponsor, and a person is 

not required to respond to, a collection of information unless it displays a currently valid OMB control 

number.

Send comments on the Agency’s need for this information, the accuracy of the provided burden 

estimates, and any suggested methods for minimizing respondent burden, including through the use of 

automated collection techniques to the U.S.Environmental Protection Agency, Attn: Director, Collection 

Strategies Division, Office of Information Collection, 1200 Pennsylvania Avenue, NW, Mail Code 

2822T, Washington, DC 20460. Please include the EPA Docket ID Number OAR-2004-0077 and OMB 

Control Number 2060-0226 in nay correspondence. Do not send the completed form to this address.

Managing Director
Form 1265

-93 (Revised 1/05)

Previous editions are obsolete

23