ASTM_D_6126_-_D_6126M_-_11_2015.pdf

Designation:D6126/D6126M11(Reapproved 2015)Standard Specification forHFC-23(Trifluoromethane,CHF3)1This standard is issued under the fixed designation D6126/D6126M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for HFC-23as a fire fighting medium.1.2 This specification does not address the fire fightingequipment or hardware that employs HFC-23 or the conditionsof employing such equipment(for example:handshields,fixedinstallations,etc.).1.3 This specification does not address the storage ortransportation of HFC-23 Storage handling,and transportationissues are addressed in Practice D6127.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5 The following safety hazards caveat pertains to the testmethods portion,Section 6,of this specification:This standarddoes 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 and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:2D6127 Practice for Handling,Transportation,and Storage ofHFC-23(Trifluoromethane,CHF3)D6806 Practice for Analysis of Halogenated Organic Sol-vents and Their Admixtures by Gas Chromatography2.2 ISO Standards:3ISO 3427 Gaseous Halogenated Hydrocarbons(LiquefiedGases)-Taking a Sample2.3 AHRI Standards:42008 Appendix C Analytical Procedures for ARI Standard700-20062.4 U.S.Government Standards:5Code of Federal Regulations(CFR)Title 49,Part 172.101Tables of Hazardous Materials and Special ProvisionsCode of Federal Regulations(CFR)Title 49,Part 172 SubD Marking Requirements of Packaging for Transportation2.5 American Society of Refrigerating Engineers:6ASRE Standard 34,Designation of Refrigerants3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 halogenated hydrocarbonthe halogenated com-pound coding terminology system provides a convenientmeans to reference halogenated hydrocarbons,ASRE 34.Halogenated hydrocarbons are saturated hydrocarbons inwhich one or more of the hydrogen atoms have been replacedby atoms of the halogen series(fluorine,chlorine,bromine,andiodine).It is convention to prefix the number with an abbre-viation of the compound:CFC=chlorofluorocarbonHCFC=hydrochlorofluorocarbonHFC=hydrofluorocarbonFC=fluorocarbonR=refrigerant3.1.1.1 DiscussionBy definitions,the right most digit ofthe numbering system is the number of fluorine atoms.3.1.1.2 DiscussionThe second digit from the right is thenumber of hydrogen atoms plus one(+1).3.1.1.3 DiscussionThe third digit from the right is one less1This specification is under the jurisdiction of ASTM Committee D26 onHalogenated Organic Solvents and Fire Extinguishing Agentsand is the directresponsibility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved June 1,2015.Published June 2015.Originallyapproved in 1997.Last previous edition approved in 2011 as D6126/D6126M-111.DOI:10.1520/D6126_D6126M-11R15.2For referenced 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from Air Conditioning,Heating&Refrigeration Institute(AHRI),2111 Wilson Blvd.,Suite 500,Arlington,VA 22201,http:/www.ahrinet.org.5Available from U.S.Government Publishing Office,732 N.Capitol St.,NW,Washington,DC 20401-0001,http:/www.gpo.gov.6Available from American Society of Refrigerating Engineers,RefrigerationEngineering 65.49(1957).Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1(-1)than number of carbon atoms in the compound(when thisnumber is zero(0)it is omitted from the number.3.1.1.4 DiscussionUnaccounted for valance requirementsare assumed to be chlorine atoms.3.1.1.5 DiscussionWhen the compound contains bromineor iodine,the same rules apply except the letter“B”forbromine or“I”for iodine follows the parent compounddesignated number and the number of the atoms is placed afterthe letter.3.1.1.6 DiscussionExampleCHF3=R-23=HFC-23.3.1.2 HFC-23the compound trifluoromethane;CHF3.4.Material Requirements4.1 Nitrogen(N2)partial pressure is not required for thisproduct,it is shipped neat.The saturated vapor pres