ASTM D6541-21

Standard Specification for HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF<inf>3</inf >CH<inf>2</inf>CF<inf>3</inf>)

ABSTRACT
This specification covers the requirements for HFC- 236fa HFC-236fa, 1,1,1,3,3,3-hexafluoropropane, (CF3CH 2CF3) as a fire-fighting medium. The materials are classified into two types: type I - mixtures of HFC-236fa and nitrogen, and type II - HFC-236fa. The purity, acidity, water content, non-volatile residue, fixed gases in the vapour phase, and suspended matter or sediment shall be tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers the requirements for HFC-236fa as a fire-fighting medium.  
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC-236fa or the conditions of employing such equipment (for example, hand-helds, fixed installations, and so forth).  
1.3 This specification does not address the storage or transportation of HFC-236fa. Storage, handling, and transportation issues are addressed in Practice D6427.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.5 The following safety hazards caveat pertains to the test methods portion, Section 6, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific warning statement is given in 4.3.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-May-2021
• ICS: 13.220.10 - Fire-fighting
• ICS: 71.080.20 - Halogenated hydrocarbons
• Technical Committee: D26 - Halogenated Organic Solvents and Fire Extinguishing Agents
• Drafting Committee: D26.09 - Fire Extinguishing Agents

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6541 −21
Standard Specification for
1
HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF CH CF )
3 2 3
This standard is issued under the fixed designation D6541; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D6806 Practice for Analysis of Halogenated Organic Sol-
vents and Their Admixtures by Gas Chromatography
1.1 This specification covers the requirements for HFC-
3
2.2 U.S. Government Standards:
236fa as a fire-fighting medium.
49 CFR Part 172 Hazardous Materials Table, Special
1.2 This specification does not address the fire-fighting
Provisions, Hazardous Materials Communications, Emer-
equipment or hardware that employs HFC-236fa or the condi-
gency Response Information, Training Requirements, and
tions of employing such equipment (for example, hand-helds,
Security Plans
fixed installations, and so forth).
49 CFR Part 172.101 Purpose and Use of Hazardous Mate-
1.3 This specification does not address the storage or
rials Table
transportation of HFC-236fa. Storage, handling, and transpor- 4
2.3 AHRI Standard:
tation issues are addressed in Practice D6427.
2008 Appendix C for Analytical Procedures for AHRI Stan-
1.4 The values stated in SI units are to be regarded as
dard 700-2014
standard. The values given in parentheses after SI units are 5
2.4 ASHRAE Standard:
provided for information only and are not considered standard.
ASHRAEStandard34 DesignationandSafetyClassification
1.5 The following safety hazards caveat pertains to the test
of Refrigerants
methods portion, Section 6, of this specification. This standard
does not purport to address all of the safety concerns, if any, 3. Terminology
associated with its use. It is the responsibility of the user of this
3.1 Definitions of Terms Specific to This Standard:
standard to establish appropriate safety, health, and environ-
3.1.1 halogenated hydrocarbon, n (see Discussion)—
mental practices and determine the applicability of regulatory
saturated hydrocarbons in which one or more of the hydrogen
limitations prior to use. A specific warning statement is given
atoms have been replaced by atoms of the halogen series
in 4.3.
(fluorine, chlorine, bromine, and iodine). It is convention to
1.6 This international standard was developed in accor-
prefix the number with an abbreviation of the compound:
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the CFC = chlorofluorocarbon
Development of International Standards, Guides and Recom- HCFC = hydrochlorofluorocarbon
HFC = hydrofluorocarbon
mendations issued by the World Trade Organization Technical
FC = fluorocarbon
Barriers to Trade (TBT) Committee.
R = refrigerant
2. Referenced Documents
Discussion—The halogenated compound coding terminology
2
2.1 ASTM Standards:
system provides a convenient means to reference halogenated
D6427 Practice for Handling,Transportation, and Storage of
hydrocarbons (see ASHRAE 34).
HFC-236fa, 1,1,1,3,3,3-Hexafluoropropane (CF CH CF )
3 2 3
3.1.1.1 By definition, the right-most digit of the numbering
system is the number of fluorine atoms.
1
This specification is under the jurisdiction of ASTM Committee D26 on
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
3
responsibility of Subcommittee D26.09 on Fire Extinguishing Agents. Code of Federal Regulations (CFR) documents are available from U.S.
Current edition approved June 1, 2021. Published June 2021. Originally Government Publishing Office (GPO), 732 N. Capitol St., NW, Washington, DC
approved in 2000. Last previous edition approved in 2015 as D6541–11 (2015). 20401, http://www.gpo.gov.
4
DOI: 10.1520/D6541-21. Available from Air-Conditioning, Heating, and Refrigeration Institute (AHRI),
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 2311 Wilson Blvd., Suite 400, Arlington, VA 22201, http://www.ahrinet.org.
5
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from American Society of Heating, Refrigerating, and Air-
Standards volume information, refer to the standard’s Document Summary page on Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
the ASTM website. 30329, http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6541 − 21
3.1.1.2 The second digit fr
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6541 − 11 (Reapproved 2015) D6541 − 21
Standard Specification for
1
HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF CH CF )
3 2 3
This standard is issued under the fixed designation D6541; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers the requirements for HFC-236fa as a fire-fighting medium.
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC-236fa or the conditions of
employing such equipment (for example, hand-helds, fixed installations, and so forth).
1.3 This specification does not address the storage or transportation of HFC-236fa. Storage, handling, and transportation issues
are addressed in Practice D6065D6427.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.after SI
units are provided for information only and are not considered standard.
1.5 The following safety hazards caveat pertains to the test methods portion, Section 6, of this specification. This standard does
not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard
to establish appropriate safety safety, health, and healthenvironmental practices and determine the applicability of regulatory
limitations prior to use. A specific warning statement is given in 4.3.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D6065D6427 Practice for Handling, Transportation, and Storage of HFC-227ea 1,1,1,2,3,3,3-HeptafluoropropaneHFC-236fa,
1,1,1,3,3,3-Hexafluoropropane (CF CHFCFCH CF )
3 2 3
D6806 Practice for Analysis of Halogenated Organic Solvents and Their Admixtures by Gas Chromatography
3
2.2 ISO U.S. Government Standards:
ISO 342749 CFR Part 172 Gaseous Halogenated Hydrocarbons (Liquefied Gases)—Taking a SampleHazardous Materials Table,
Special Provisions, Hazardous Materials Communications, Emergency Response Information, Training Requirements, and
Security Plans
49 CFR Part 172.101 Purpose and Use of Hazardous Materials Table
1
This specification is under the jurisdiction of ASTM Committee D26 on Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct responsibility
of Subcommittee D26.09 on Fire Extinguishing Agents.
Current edition approved June 1, 2015June 1, 2021. Published June 2015June 2021. Originally approved in 2000. Last previous edition approved in 20112015 as
D6541–11. –11 (2015). DOI: 10.1520/D6541-11R15.10.1520/D6541-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6541 − 21
4
2.3 AHRI Standard:
2008 Appendix C for Analytical Procedures for AHRI Standard 700-2006700-2014
5
2.4 U.S. Government Standards:
Code of Federal Regulations (CFR) Title 49, Part 172.101 Tables of Hazardous Materials and Special Provisions
Code of Federal Regulations (CFR) Title 49, Part 172 Subpart D Marking Requirements of Packaging for Transportation
5
2.4 ASHRAE Standard:
ASHRAE Standard 34 Designation and Safety Classification of Refrigerants
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 halogenated hydrocarbon hydrocarbon, n (see Note 1Discussion)—)—saturated hydrocarbons in which one or more of the
hydrogen atoms have been replaced by atoms of the halogen series (fluorine, chlorine, bromine, and iodine). It is convention to
prefix the number with an abbreviation of the compound:
CFC = chlorofluorocarbon
HCFC = hydrochlorofluorocarbon
HFC = hydrofluorocarbon
FC = fluorocarbon
R = refrigerant
NOTE 1—The halogenated compound coding terminology system provides a convenient means to reference halogenated hydrocar
...