ASTM D7327-07

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 D 7326.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Mar-2007
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: D26 - Halogenated Organic Solvents and Fire Extinguishing Agents
• Drafting Committee: D26.09 - Fire Extinguishing Agents

Relations

• Replaced By: ASTM D7327-12 - 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-Apr-2007

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 −07
StandardSpecification for
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 ISO 5789 Fluorinated Hydrocarbons for Industrial Use-
Determination of Nonvolatile Residue
1.1 This specification covers requirements for HFC Blend B
2.3 ASHRAE Standard:
as a fire-fighting medium.
ASHRAE 34 Designation and Safety Classification of Re-
1.2 This specification does not address the fire-fighting
frigerants
equipment or hardware that employs HFC Blend B or the
2.4 U.S. Government Standards:
conditions of employing such equipment (for example,
CFR Title 49, Part 172, Subpart D, U.S. Department of
handhelds, fixed installations, etc.).
Transportation (DOT), Marking Requirements of Packag-
1.3 This specification does not address the storage or
ing for Transportation
transportation of HFC Blend B. Storage, handling, and trans-
3. Terminology
portation issues are addressed in Practice D7326.
3.1 Definitions of Terms Specific to This Standard:
1.4 The values stated in inch-pound units are to be regarded
3.1.1 HFC—hydrofluorocarbon; a chemical compound in
as standard. The values given in parentheses are for informa-
which the compound molecule is comprised exclusively of
tion only.
hydrogen, chlorine, fluorine and carbon atoms.
2. Referenced Documents
3.1.2 HFC Blend B—tertiary blend comprised of HFC-134a
(1,1,1,2-tetrafluoroethane), HFC-125 (pentafluoroethane), and
2.1 ASTM Standards:
carbon dioxide (CO ); a compound used to inert, extinguish, or
D7326 Practice for Handling,Transportation, and Storage of
suppress a fire or explosion hazard.
HFC Blend B (CH FCF , CHF CF , and CO )
2 3 2 3 2
3.1.2.1 Discussion—The terminology system for fluorine-
D2109 Test Methods for Nonvolatile Matter in Halogenated
containing compounds (described in detail in ASHRAE Stan-
Organic Solvents and Their Admixtures
dard34)providesaconvenientmeanstoreferencethestructure
D3401 Test Methods for Water in Halogenated Organic
of individual compounds. By definition, the first digit of the
Solvents and Their Admixtures
numbering system represents one less than the number of
D3444 Test Method for Total Acid Number of Trichlorotri-
carbon atoms in the compound molecule; the second digit, one
fluoroethane
more than the number of hydrogen atoms in the compound
D6806 Practice for Analysis of Halogenated Organic Sol-
molecule; and the third digit, the number of fluorine atoms in
vents and Their Admixtures by Gas Chromatography
the compound molecule. Unaccounted for valence require-
2.2 ISO Standards:
ments are assumed to be chlorine atoms. For example, the
ISO 3363 Fluorochlorinated Hydrocarbons for Industrial
designation HFC-123 indicates two carbon atoms (1 + 1), two
Use-Determination of Acidity-Titrimetric Method
hydrogen atoms (3-1), and four fluorine atoms (4). The “a”
ISO 3427 Gaseous Halogenated Hydrocarbons (Liquefied
designation at the end of the naming convention relates to the
Gases)–Taking of a Sample
symmetry of the molecule.
Example: CH FCF = HFC-134a
2 3
1 4. Material Requirements
This specification is under the jurisdiction of ASTM Committee D26 on
Halogenated Organic Solvents and Fire Extinguishing Agents and is the direct
4.1 The fill density of HFC Blend B within a container
responsibility of Subcommittee D26.09 on Fire Extinguishing Agents.
shouldnotexceedthatneededtoachievecompletefillingofthe
Current edition approved April 1, 2007. Published April 2007. DOI: 10.1520/
D7327-07.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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.
3 5
Available from American National Standards Institute, 11 W. 42nd St., 13th Available from Superintendent of Documents, U.S. Government Printing
Floor, New York, NY 10036. Office, Washington, DC 20036.
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D7327−07
container at the maximum envisaged storage temperature. For method specified in ISO 342
...