ASTM D6231/D6231M-21

Standard Specification for HFC-125 (Pentafluoroethane, C<inf>2</inf>HF<inf>5</inf>)

ABSTRACT
This specification covers the requirements for HFC-125 (pentafluoroethane, C2HF5) as a fire-fighting medium. It does not however address the fire-fighting equipment or hardware that employs HFC-125, the conditions of employing such equipment like hand helds, fixed installations, etc., or the storage and transportation of HFC-125. Samples of HFC-125 taken in the liquid phase shall be taken from filled containers in accordance to a specific method and shall be tested for quality conformance using gas chromatography, sodium hydroxide titration, and Karl Fischer methods. HFC-125 shall conform to the purity, acidity, water content, nonvolatile residue, presence of fixed gases in the vapor phase, and suspended matter or sediment requirements when tested by the appropriate test methods.
SCOPE
1.1 This specification covers the requirements for HFC-125 as a fire-fighting medium.  
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC-125 or the conditions of employing such equipment, for example, hand helds, fixed installations, etc.  
1.3 This specification does not address the storage or transportation of HFC-125. Storage, handling, and transportation issues are addressed in Practice D6268.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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. Specific hazards statements are 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:D6231/D6231M −21
Standard Specification for
1
HFC-125 (Pentafluoroethane, C HF )
2 5
This standard is issued under the fixed designation D6231/D6231M; 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 D6268 Practice for Handling,Transportation, and Storage of
HFC-125, Pentafluoroethane (C HF )
2 5
1.1 This specification covers the requirements for HFC-125
D6806 Practice for Analysis of Halogenated Organic Sol-
as a fire-fighting medium.
vents and Their Admixtures by Gas Chromatography
1.2 This specification does not address the fire-fighting
3
2.2 U.S. Government Standards:
equipment or hardware that employs HFC-125 or the condi-
49 CFR Part 172 Hazardous Materials Table, Special
tions of employing such equipment, for example, hand helds,
Provisions, Hazardous Materials Communications, Emer-
fixed installations, etc.
gency Response Information, Training Requirements, and
1.3 This specification does not address the storage or
Security Plans
transportation of HFC-125. Storage, handling, and transporta-
49 CFR Part 172.101 Purpose and Use of Hazardous Mate-
tion issues are addressed in Practice D6268.
rials Table
4
1.4 The values stated in either SI units or inch-pound units
2.3 AHRI Standard:
are to be regarded separately as standard. The values stated in
2008 Appendix C for Analytical Procedures for AHRI Stan-
each system are not necessarily exact equivalents; therefore, to
dard 700-2014
ensure conformance with the standard, each system shall be 5
2.4 ASHRAE Standard:
used independently of the other, and values from the two
ASHRAE Standard 34 Designation and Safety Classification
systems shall not be combined.
of Refrigerants
1.5 The following safety hazards caveat pertains to the test
methods portion, Section 6, of this specification. This standard
3. Terminology
does not purport to address all of the safety concerns, if any,
3.1 Definitions of Terms Specific to This Standard:
associated with its use. It is the responsibility of the user of this
3.1.1 halogenated hydrocarbon, n—the halogenated com-
standard to establish appropriate safety, health, and environ-
pound coding terminology system provides a convenient
mental practices and determine the applicability of regulatory
means to reference halogenated hydrocarbons (see ASHRAE
limitations prior to use. Specific hazards statements are given
Standard 34). Halogenated hydrocarbons are saturated hydro-
in 4.3.
carbonsinwhichoneormoreofthehydrogenatomshavebeen
1.6 This international standard was developed in accor-
replaced by atoms of the halogen series: fluorine, chlorine,
dance with internationally recognized principles on standard-
bromine, and iodine. It is convention to prefix the number with
ization established in the Decision on Principles for the
an abbreviation of the compound:
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
CFC = chlorofluorocarbon
Barriers to Trade (TBT) Committee. HCFC = hydrochlorofluorocarbon
HFC = hydrofluorocarbon
2. Referenced Documents
FC = fluorocarbon
2
R = refrigerant
2.1 ASTM Standards:
1
This specification is under the jurisdiction of ASTM Committee D26 on
3
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct Code of Federal Regulations (CFR) documents available from U.S. Govern-
responsibility of Subcommittee D26.09 on Fire Extinguishing Agents. ment Publishing Office (GPO), 732 N. Capitol St., NW, Washington, DC 20401,
Current edition approved June 1, 2021. Published June 2021. Originally http://www.gpo.gov.
4
approved in 1998. Last previous edition approved in 2015 as D6231-11 (2015). Available from the Air-Conditioning, Heating, and Refrigeration Institute
DOI: 10.1520/D6231_D6231M-21. (AHRI), 2311 Wilson Blvd., Suite 400, Arlington, VA, 22201, http://
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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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D6231/D6
...

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: D6231 − 11 (Reapproved 2015) D6231/D6231M − 21
Standard Specification for
1
HFC-125 (Pentafluoroethane, C HF )
2 5
This standard is issued under the fixed designation D6231;D6231/D6231M; 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-125 as a fire-fighting medium.
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC-125 or the conditions of
employing such equipment, for example, hand helds, fixed installations, etc.
1.3 This specification does not address the storage or transportation of HFC-125. Storage, handling, and transportation issues are
addressed in Practice D6268.
1.4 The values stated in both inch-pound and either SI units or inch-pound units are to be regarded separately as the standard. The
values givenstated in parentheses are for information only.each system are not necessarily exact equivalents; therefore, to ensure
conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not
be combined.
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. Specific hazards statements are 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:
D6268 Practice for Handling, Transportation, and Storage of HFC-125, Pentafluoroethane (C HF )
2 5
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
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 1998. Last previous edition approved in 20112015 as D6231-11.
-11 (2015). DOI: 10.1520/D6231-11R15.10.1520/D6231_D6231M-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

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D6231/D6231M − 21
49 CFR Part 172.101 Purpose and Use of Hazardous Materials Table
4
2.3 AHRI Standards:Standard:
2008 Appendix C for Analytical Procedures for ARIAHRI 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 American Society of Refrigerating Engineers:ASHRAE Standard:
ASREASHRAE Standard 34,34 Designation and Safety Classification of Refrigerants
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 halogenated hydrocarbon, n—the halogenated compound coding terminology system provides a convenient means to
reference halogenated hydrocarbons (see ASRE ASHRAE Standard 34). Halogenated hydrocarbons are saturated hydrocarbons in
which one or more of the hydrogen atoms have been replaced by atoms of the halogen series: fluorine, chlorine,
...