ASTM D6541-05

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 D 6427.
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 6.1, 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

• Status: Historical
• Publication Date: 31-May-2005
• 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

Relations

• Replaces: ASTM D6541-00 - Standard Specification for HFC-236fa, 1,1,1,3,3,3-Hexafluoropropane, (CF₃CH₂CF₃)
• Effective Date: 01-Jun-2005
• Replaced By: ASTM D6541-11 - Standard Specification for HFC-236fa, 1,1,1,3,3,3<span class='unicode'>&#x2013;</span>Hexafluoropropane, (CF₃CH₂CF₃)
• Effective Date: 01-Aug-2011
• Referred By: ASTM D6427-21 - Standard Practice for Handling, Transportation, and Storage of HFC-236fa, 1,1,1,3,3,3-Hexafluoropropane (CF<inf>3</inf>CH<inf>2</inf>CF<inf>3</inf>)
• Effective Date: 01-Jun-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6541 – 05
Standard Specification for
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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.
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1. Scope 2.3 U.S. Government Standards:
Code of Federal Regulations (CFR) Title 49, Part 172.101
1.1 This specification covers the requirements for HFC-
Tables of Hazardous Materials and Special Provisions
236fa as a fire-fighting medium.
Code of Federal Regulations (CFR) Title 49, Part 172
1.2 This specification does not address the fire-fighting
Subpart D Marking Requirements of Packaging for
equipment or hardware that employs HFC-236fa or the condi-
Transportation
tions of employing such equipment (for example, hand-helds,
2.4 American Society of Refrigeration Engineers Stan-
fixed installations, and so forth).
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dard:
1.3 This specification does not address the storage or
ASHRAE Standard 34, Designation of Refrigerants
transportation of HFC-236fa. Storage, handling, and transpor-
tation issues are addressed in Practice D6427.
3. Terminology
1.4 The values stated in SI units are to be regarded as
3.1 Definitions of Terms Specific to This Standard:
standard. The values given in parentheses are for information
3.1.1 halogenated hydrocarbon (see Note 1)—saturated hy-
only.
drocarbons in which one or more of the hydrogen atoms have
1.5 The following safety hazards caveat pertains to the test
been replaced by atoms of the halogen series (fluorine, chlo-
methods portion, Section 6.1, of this specification. This stan-
rine, bromine, and iodine). It is convention to prefix the
dard does not purport to address all of the safety concerns, if
number with an abbreviation of the compound:
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 limita-
CFC = chlorofluorocarbon
tions prior to use. Aspecific warning statement is given in 4.3.
HCFC = hydrochlorofluorocarbon
HFC = hydrofluorocarbon
2. Referenced Documents
FC = fluorocarbon
2
2.1 ASTM Standards:
R = refrigerant
D6427 Practice for Handling, Transportation, and Storage
NOTE 1—The halogenated compound coding terminology system pro-
of HFC-236fa, 1,1,1,3,3,3-Hexafluoropropane
vides a convenient means to reference halogenated hydrocarbons (see
(CF CH CF )
3 2 3
ASRE 34).
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2.2 ISO Standards:
3.1.1.1 By definition, the right-most digit of the numbering
ISO 3363 Fluorinated Hydrocarbons for Industrial Use—
system is the number of fluorine atoms.
Determination of Acidity-Titration Method
3.1.1.2 The second digit from the right is the number of
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied
hydrogen atoms plus one (+1).
Gases)—Taking a Sample
3.1.1.3 Thethirddigitfromtherightisoneless(-1)thanthe
ISO 5789 Fluorinated Hydrocarbons for Industrial Use—
number of carbon atoms in the compound (when this number
Determination of Nonvolatile Residue
is zero, it is omitted from the number).
3.1.1.4 Unaccounted for valance requirements are assumed
to be chlorine atoms.
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This specification is under the jurisdiction of ASTM Committee D26 on
3.1.1.5 When the compound contains bromine or iodine, the
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
responsibility of Subcommittee D26.09 on Halogenated Fire Extinguishants. same rules apply, except the letter B for bromine or I for iodine
CurrenteditionapprovedJune1,2005.PublishedJuly2005.Originallyapproved
follows the parent compound designated number, and the
in 2000. Last previous edition approved in 2000 as D6541–00. DOI: 10.1520/
number of the atoms is placed after the letter.
D6541-05.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from Superintendent of Documents, U.S. Government Printing
the ASTM website. Office, Washington, DC 20036.
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Available from American National Standards Institute, 25 W. 43rd St., 4th Available from American Society of Refrigeration Engineers, Refrigeration
Floor, New York, NY 10036. Engineering 65, 49 (1957).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6541 – 05
Example: CF CH CF 5 R–236fa 5 HFC–236fa capable of safely resisting the vapor pressure of the sample at
3 2 3
3.1.2 HFC-236fa—the compound 1,1,1,3,3,3–hexaflu
...