ASTM D7327-12

Standard Specification for HFC Blend B (CH₂FCF₃, CHF₂CF₃, and CO₂)

SCOPE
1.1 This specification covers requirements for HFC Blend B as a fire-fighting medium.  
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC Blend B or the conditions of employing such equipment (for example, handhelds, fixed installations, etc.).  
1.3 This specification does not address the storage or transportation of HFC Blend B. Storage, handling, and transportation issues are addressed in Practice D7326.  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard  
1.5 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. Specific cautionary statements are given in Section 4.

General Information

• Status: Historical
• Publication Date: 31-Aug-2012
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: D26 - Halogenated Organic Solvents and Fire Extinguishing Agents
• Drafting Committee: D26.09 - Fire Extinguishing Agents

Relations

• Replaces: ASTM D7327-07 - Standard Specification for HFC Blend B (CH₂FCF₃, CHF₂CF₃, and CO₂)
• Effective Date: 01-Sep-2012
• Referred By: ASTM D7326-21 - Standard Practice for Handling, Transportation, and Storage of HFC Blend B (CH<inf >2</inf>FCF<inf>3</inf>, CHF<inf>2</inf>CF<inf>3</inf>, and CO<inf >2</inf>)
• Effective Date: 01-Sep-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D7327 −12
Standard Specification for
1
HFC Blend B (CH FCF , CHF CF , and CO )
2 3 2 3 2
This standard is issued under the fixed designation D7327; 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.
4
1. Scope 2.3 ASHRAE Standard:
ASHRAE 34 Designation and Safety Classification of Re-
1.1 This specification covers requirements for HFC Blend B
frigerants
as a fire-fighting medium.
5
2.4 U.S. Government Standards:
1.2 This specification does not address the fire-fighting
CFR Title 49, Part 172, Subpart D, U.S. Department of
equipment or hardware that employs HFC Blend B or the
Transportation (DOT), Marking Requirements of Packag-
conditions of employing such equipment (for example,
ing for Transportation
handhelds, fixed installations, etc.).
CFR Title 49, Part 172.101 Tables of Hazardous Materials
1.3 This specification does not address the storage or
and Special Provisions
transportation of HFC Blend B. Storage, handling, and trans-
6
2.5 AHRI Standards:
portation issues are addressed in Practice D7326.
2008 Appendix C for Analytical Procedures for AHRI Stan-
1.4 The values stated in inch-pound units are to be regarded
dard 700-2006
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3. Terminology
and are not considered standard
3.1 Definitions of Terms Specific to This Standard:
1.5 This standard does not purport to address all of the
3.1.1 HFC—hydrofluorocarbon; a chemical compound in
safety concerns, if any, associated with its use. It is the
which the compound molecule is comprised exclusively of
responsibility of the user of this standard to establish appro-
hydrogen, chlorine, fluorine and carbon atoms.
priate safety and health practices and determine the applica-
3.1.2 HFC Blend B—tertiary blend comprised of HFC-134a
bility of regulatory limitations prior to use. Specific caution-
(1,1,1,2-tetrafluoroethane), HFC-125 (pentafluoroethane), and
ary statements are given in Section 4.
carbon dioxide (CO ); a compound used to inert, extinguish, or
2
suppress a fire or explosion hazard.
2. Referenced Documents
3.1.2.1 Discussion—The terminology system for fluorine-
2
2.1 ASTM Standards:
containing compounds (described in detail in ASHRAE Stan-
D7326 Practice for Handling,Transportation, and Storage of
dard34)providesaconvenientmeanstoreferencethestructure
HFC Blend B (CH FCF , CHF CF , and CO )
2 3 2 3 2
of individual compounds. By definition, the first digit of the
D6806 Practice for Analysis of Halogenated Organic Sol-
numbering system represents one less than the number of
vents and Their Admixtures by Gas Chromatography
carbon atoms in the compound molecule; the second digit, one
3
more than the number of hydrogen atoms in the compound
2.2 ISO Standards:
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied molecule; and the third digit, the number of fluorine atoms in
the compound molecule. Unaccounted for valence require-
Gases)–Taking of a Sample
ments are assumed to be chlorine atoms. For example, the
designation HFC-123 indicates two carbon atoms (1 + 1), two
hydrogen atoms (3-1), and four fluorine atoms (4). The “a”
1
This specification is under the jurisdiction of ASTM Committee D26 on
designation at the end of the naming convention relates to the
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
responsibility of Subcommittee D26.09 on Fire Extinguishing Agents.
Current edition approved Sept. 1, 2012. Published October 2012. Originally
approved in 2007. Last previous edition approved in 2007 as D7327- 07. DOI:
4
10.1520/D7327-12. Available from American Society of Heating, Refrigerating, and Air-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 30329.
5
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.
3 6
Available from American National Standards Institute, 11 W. 42nd St., 13th Available from Air-Conditioning, Heating, and Refrigeration Institute, 2111
Floor, New York, NY 10036. Wilson Blvd., Suite 500, Arlington, VA 22201.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7327−12
symmetry of the molecule. 4.5 CAUTION: Prolonged exposure to concentrations of
Exam
...

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: D7327 − 07 D7327 − 12
Standard Specification for
1
HFC Blend B (CH FCF , CHF CF , and CO )
2 3 2 3 2
This standard is issued under the fixed designation D7327; 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 requirements for HFC Blend B as a fire-fighting medium.
1.2 This specification does not address the fire-fighting equipment or hardware that employs HFC Blend B or the conditions of
employing such equipment (for example, handhelds, fixed installations, etc.).
1.3 This specification does not address the storage or transportation of HFC Blend B. Storage, handling, and transportation
issues are addressed in Practice D7326.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information
only.mathematical conversions to SI units that are provided for information only and are not considered standard
1.5 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. Specific cautionary statements are given in Section 4.
2. Referenced Documents
2
2.1 ASTM Standards:
D7326 Practice for Handling, Transportation, and Storage of HFC Blend B (CH FCF , CHF CF , and CO )
2 3 2 3 2
D2109 Test Methods for Nonvolatile Matter in Halogenated Organic Solvents and Their Admixtures
D3401 Test Methods for Water in Halogenated Organic Solvents and Their Admixtures
D3444 Test Method for Total Acid Number of Trichlorotrifluoroethane
D6806 Practice for Analysis of Halogenated Organic Solvents and Their Admixtures by Gas Chromatography
3
2.2 ISO Standards:
ISO 3363 Fluorochlorinated Hydrocarbons for Industrial Use-Determination of Acidity-Titrimetric Method
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied Gases)–Taking of a Sample
ISO 5789 Fluorinated Hydrocarbons for Industrial Use-Determination of Nonvolatile Residue
4
2.3 ASHRAE Standard:
ASHRAE 34 Designation and Safety Classification of Refrigerants
5
2.4 U.S. Government Standards:
CFR Title 49, Part 172, Subpart D, U.S. Department of Transportation (DOT), Marking Requirements of Packaging for
Transportation
CFR Title 49, Part 172.101 Tables of Hazardous Materials and Special Provisions
6
2.5 AHRI Standards:
2008 Appendix C for Analytical Procedures for AHRI Standard 700-2006
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
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 April 1, 2007Sept. 1, 2012. Published April 2007October 2012. Originally approved in 2007. Last previous edition approved in 2007 as D7327-
07. DOI: 10.1520/D7327-07.10.1520/D7327-12.
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’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute, 11 W. 42nd St., 13th Floor, New York, NY 10036.
4
Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA 30329.
5
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20036.
6
Available from Air-Conditioning, Heating, and Refrigeration Institute, 2111 Wilson Blvd., Suite 500, Arlington, VA 22201.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7327 − 12
3.1.1 HFC—hydrofluorocarbon; a chemical compound in which the compound molecule is comprised exclusively of hydrogen,
chlorine, fluorine and carbon atoms.
3.1.2 HFC Blend B—tertiary blend comprised of HFC-134a (1,1,1,2-tetrafluoroethane), HFC-125 (pentafluoroethane), and
carbon dioxide (CO ); a compound used to inert, extinguish, or suppress a fire or explosion hazard.
2
3.1.2.1 Discussion—
The terminology system for fluorine-containin
...