ASTM D6541-11(2015)
(Specification)Standard Specification for HFC-236fa, 1,1,1,3,3,3–Hexafluoropropane, (CF3CH2CF3)
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 D6065.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.A specific warning statement is given in 4.3.
General Information
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Designation:D6541 −11 (Reapproved 2015)
Standard Specification for
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 2.3 AHRI Standard:
2008Appendix C Analytical Procedures forAHRI Standard
1.1 This specification covers the requirements for HFC-
700-2006
236fa as a fire-fighting medium.
2.4 U.S. Government Standards:
1.2 This specification does not address the fire-fighting
Code of Federal Regulations (CFR) Title 49, Part
equipment or hardware that employs HFC-236fa or the condi-
172.101 Tables of Hazardous Materials and Special Pro-
tions of employing such equipment (for example, hand-helds,
visions
fixed installations, and so forth).
Code of Federal Regulations (CFR) Title 49, Part 172
1.3 This specification does not address the storage or
Subpart D Marking Requirements of Packaging forTrans-
transportation of HFC-236fa. Storage, handling, and transpor-
portation
tation issues are addressed in Practice D6065.
2.5 ASHRAE Standard:
ASHRAE Standard 34 Designation and Safety Classifica-
1.4 The values stated in SI units are to be regarded as
tion of Refrigerants
standard. The values given in parentheses are for information
only.
3. Terminology
1.5 The following safety hazards caveat pertains to the test
3.1 Definitions of Terms Specific to This Standard:
methods portion, Section 6, of this specification. This standard
3.1.1 halogenated hydrocarbon (see Note 1)—saturated hy-
does not purport to address all of the safety concerns, if any,
drocarbons in which one or more of the hydrogen atoms have
associated with its use. It is the responsibility of the user of this
been replaced by atoms of the halogen series (fluorine,
standard to establish appropriate safety and health practices
chlorine, bromine, and iodine). It is convention to prefix the
and determine the applicability of regulatory limitations prior
number with an abbreviation of the compound:
to use.A specific warning statement is given in 4.3.
CFC = chlorofluorocarbon
2. Referenced Documents
HCFC = hydrochlorofluorocarbon
2.1 ASTM Standards:
HFC = hydrofluorocarbon
D6065 Practice for Handling,Transportation, and Storage of
FC = fluorocarbon
HFC-227ea 1,1,1,2,3,3,3-Heptafluoropropane
R = refrigerant
(CF CHFCF ) NOTE 1—The halogenated compound coding terminology system pro-
3 3
vides a convenient means to reference halogenated hydrocarbons (see
D6806 Practice for Analysis of Halogenated Organic Sol-
ASRE 34).
vents and Their Admixtures by Gas Chromatography
3.1.1.1 By definition, the right-most digit of the numbering
2.2 ISO Standards:
system is the number of fluorine atoms.
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied
3.1.1.2 The second digit from the right is the number of
Gases)—Taking a Sample
hydrogen atoms plus one (+1).
3.1.1.3 Thethirddigitfromtherightisoneless(-1)thanthe
This specification is under the jurisdiction of ASTM Committee D26 on
number of carbon atoms in the compound (when this number
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
is zero, it is omitted from the number).
responsibility of Subcommittee D26.09 on Fire Extinguishing Agents.
Current edition approved June 1, 2015. Published June 2015. Originally
approved in 2000. Last previous edition approved in 2011 as D6541–11. DOI:
10.1520/D6541-11R15. Available from Air-Conditioning, Heating, & Refrigeration Institute (AHRI),
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 2111 Wilson Blvd., Suite 500, Arlington, VA 22201, http://www.ahrinet.org.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from U.S. Government Publishing Office, 732 N. Capitol St., NW,
Standards volume information, refer to the standard’s Document Summary page on Washington, DC 20401-0001, http://www.gpo.gov.
the ASTM website. Available from American Society of Heating, Refrigerating, and Air-
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
4th Floor, New York, NY 10036, http://www.ansi.org. 30329, http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6541−11 (2015)
3.1.1.4 Unaccounted for valance requirements are assumed air during periods of elevated adrenaline could produce cardiac
to be chlorine atoms. arrhythmia in some personnel.)
3.1.1.5 When the compound contains bromine or iodine, the
4.4 Unless otherwise specified, Type I is assumed.
same rules apply, except the letter B for bromine or I for iodine
follows the parent compound designated number, and the
5. Sampling
number of the atoms is placed after the letter.
5.1 Samples of HFC-236fa taken from the liquid phase,
Example: CF CH CF 5R2236fa5HFC2236fa
3 2 3
shall be taken from filled containers in accordance with the
3.1.2 HFC-236fa—the compound 1,1,1,3,3,
method specified in ISO 3427. The sampling bottle shall be
3–hexafluoropropane; CF CH CF .
3 2 3
capable of safely resisting the vapor pressure of the sample at
the highest temperature that could be encountered.
4. Material Requirements
5.2 The HFC-236fa selected in accordance with 5.1 shall be
4.1 Type I—Mixtures of HFC-236fa an
...
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 D6541 − 11 (Reapproved 2015)
Standard Specification for
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 D6065.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.A specific
warning statement is given in 4.3.
2. Referenced Documents
2.1 ASTM Standards:
D6065 Practice for Handling, Transportation, and Storage of HFC-227ea 1,1,1,2,3,3,3-Heptafluoropropane (CF CHFCF )
3 3
D6806 Practice for Analysis of Halogenated Organic Solvents and Their Admixtures by Gas Chromatography
2.2 ISO Standards:
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied Gases)—Taking a Sample
2.3 AHRI Standard:
2008 Appendix C Analytical Procedures for AHRI Standard 700-2006
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
2.5 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 (see Note 1)—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:
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 Aug. 1, 2011June 1, 2015. Published September 2011June 2015. Originally approved in 2000. Last previous edition approved in 20052011 as
D6541–05.–11. DOI: 10.1520/D6541-11.10.1520/D6541-11R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute, Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.10036, http://www.ansi.org.
Available from Air-Conditioning, Heating, and& Refrigeration Institute, Institute (AHRI), 2111 Wilson Blvd., Suite 500, Arlington, VA 22201.22201, http://
www.ahrinet.org.
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20036.Publishing Office, 732 N. Capitol St., NW, Washington, DC
20401-0001, http://www.gpo.gov.
Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA 30329.30329,
http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6541 − 11 (2015)
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 hydrocarbons (see ASRE 34).
3.1.1.1 By definition, the right-most digit of the numbering system is the number of fluorine atoms.
3.1.1.2 The second digit from the right is the number of hydrogen atoms plus one (+1).
3.1.1.3 The third digit from the right is one less (-1) than the number of carbon atoms in the compound (when this number is
zero, it is omitted from the number).
3.1.1.4 Unaccounted for valance requirements are assumed to be chlorine atoms.
3.1.1.5 When the compound contains bromine or iodine, the same rules apply, except the letter B for bromine or I for iodine
follows the parent compound designated number, and the number of the atoms is placed after the letter.
Example: CF CH CF 5R2236fa5HFC2236fa
3 2 3
3.1.2 HFC-236fa—the compound 1,1,1,3,3,3–hexafluoropropane; CF CH CF .
3 2 3
4. Material Requirements
4.1 Type I—Mixtures of HFC-236fa and Nitrogen:
4.1.1 The nitrogen (N ) partial pressure shall be such that the safe working pressure of the receiving vessel is not exceeded. To
prevent excessive pressure, the fill density of the HFC-236fa/nitrogen within the container should not exceed that needed to achieve
complete filling of the container at the maximum expected storage temperature. For example, the U.S. DOT
...
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