1、Designation:D654121Standard Specification forHFC-236fa,1,1,1,3,3,3Hexafluoropropane,(CF3CH2CF3)1This standard is issued under the fixed designation D6541;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A num
2、ber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for HFC-236fa as a fire-fighting medium.1.2 This specification does not address the fire-fightingeq
3、uipment or hardware that employs HFC-236fa or the condi-tions of employing such equipment(for example,hand-helds,fixed installations,and so forth).1.3 This specification does not address the storage ortransportation of HFC-236fa.Storage,handling,and transpor-tation issues are addressed in Practice D
4、6427.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.5 The following safety hazards caveat pertains to the testmethods portion,Section 6,of this specification.This standa
5、rddoes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety,health,and environ-mental practices and determine the applicability of regulatorylimitations prior to use.A specific warning st
6、atement is givenin 4.3.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organizatio
7、n TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D6427 Practice for Handling,Transportation,and Storage ofHFC-236fa,1,1,1,3,3,3-Hexafluoropropane(CF3CH2CF3)D6806 Practice for Analysis of Halogenated Organic Sol-vents and Their Admixtures by Gas Chromatography2.2 U
8、.S.Government Standards:349 CFR Part 172 Hazardous Materials Table,SpecialProvisions,Hazardous Materials Communications,Emer-gency Response Information,Training Requirements,andSecurity Plans49 CFR Part 172.101 Purpose and Use of Hazardous Mate-rials Table2.3 AHRI Standard:42008 Appendix C for Analy
9、tical Procedures for AHRI Stan-dard 700-20142.4 ASHRAE Standard:5ASHRAE Standard 34 Designation and Safety Classificationof Refrigerants3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 halogenated hydrocarbon,n(see Discussion)saturated hydrocarbons in which one or more of the hy
10、drogenatoms have been replaced by atoms of the halogen series(fluorine,chlorine,bromine,and iodine).It is convention toprefix the number with an abbreviation of the compound:CFC=chlorofluorocarbonHCFC=hydrochlorofluorocarbonHFC=hydrofluorocarbonFC=fluorocarbonR=refrigerantDiscussionThe halogenated c
11、ompound coding terminologysystem provides a convenient means to reference halogenatedhydrocarbons(see ASHRAE 34).3.1.1.1 By definition,the right-most digit of the numberingsystem is the number of fluorine atoms.1This specification is under the jurisdiction of ASTM Committee D26 onHalogenated Organic
12、 Solvents and Fire Extinguishing Agents and is the directresponsibility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved June 1,2021.Published June 2021.Originallyapproved in 2000.Last previous edition approved in 2015 as D654111(2015).DOI:10.1520/D6541-21.2For referenced
13、 ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Code of Federal Regulations(CFR)documents are available from U.S.Government Publ
14、ishing Office(GPO),732 N.Capitol St.,NW,Washington,DC20401,http:/www.gpo.gov.4Available from Air-Conditioning,Heating,and Refrigeration Institute(AHRI),2311 Wilson Blvd.,Suite 400,Arlington,VA 22201,http:/www.ahrinet.org.5Available from American Society of Heating,Refrigerating,and Air-Conditioning
15、Engineers,Inc.(ASHRAE),1791 Tullie Circle,NE,Atlanta,GA30329,http:/www.ashrae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standard
16、ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.1.1.2 The second digit from the right is the number ofhydrogen atoms plus one(+1).3.1.1.3 The third digit from the right is one less(1)than thenumber of carbon atoms in the compound(when this numberis zero,it is omitted from the number).3.1.1.4 Unaccounted for valance requirements are assumed
