1、Designation: D6126/D6126M 11 (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 l
2、ast 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
3、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 Prac
4、tice 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-confo
5、rmancewith 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 establis
6、h 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-v
7、ents 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, P
8、art 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
9、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 replacedb
10、y 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
11、 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 onHalogena
12、ted 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_
13、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 Inst
14、itute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Air Conditioning, Heating CHF3.4. Material Requirements4.1 Nitrogen (N2) partial pressure is not required for thisproduct, it is shipped neat. The saturated vapor pressure ofHFC-23 is 42 bars at 21C 610 ps
15、ig at 70F. HFC-23 has acritical temperature of 25.9C 78.6F. The filling densityshould be that which will not liquid fill the container attemperatures below 25.9C 78.6F or exceed 5/4 the pressurerating of the container at 130F. For example, the U.S. DOT3AL cylinder with a minimum working pressure of
16、1800 psigshall not exceed 42 bar at 21C 610 psig at 70F for amaximum filling density of 84.4 %. For this example thecylinder pressure is 141 bars at 54C 2045 psig at 130F.4.1.1 HFC-23 shall conform to the requirements prescribedin Table 1 when tested by the appropriate test method(s) listedin Sectio
17、n 6.4.1.2 When material analysis is required, by agreementbetween the purchaser and the supplier, the total pressure in theHFC-23 container, the fill density of the HFC-23 within thecontainer, and the maximum safe storage temperature shall bepart of the material analysis (certification). The pressur
18、e shallbe reported in bar (preferred) or pound-force per square inchgage (psig). The fill density shall be reported in kilograms percubic metre at 21C (preferred) or pounds per cubic foot at70F. The maximum safe storage temperature of the HFC-23shall be reported in degrees Celsius (preferred) or in
19、degreesFahrenheit and shall conform to the applicable regulations forthe HFC-23 container design and use.4.2 By agreement between the purchaser and the supplier,analysis may be required and limits established for elements orcompounds not specified in Table 1.4.3 Product RequirementsSee Table 1.5. Sa
20、mpling5.1 Samples of HFC-23, taken from the liquid phase, shallbe taken from filled containers in accordance with the methodspecified in ISO 3427. The sampling bottle shall be capable ofsafely resisting the vapor pressure of the sample at the highesttemperature that could be encountered.5.2 The HFC-
21、23 selected in accordance with 5.1 shall betested for quality conformance in accordance with Section 6.The presence of one or more defects shall be cause forrejection.6. Test Methods6.1 PurityDetemine purity using the method specified inPractice D6806.6.2 AcidityDetermine acidity using the method sp
22、ecifiedin 2008 Appendix C to ARI Standard 700-2006, part 1.6.3 Water ContentDetermine water content using themethod specified in 2008 Appendix C to ARI Standard700-2006, part 2.6.4 Nonvolatile ResidueDetermine nonvolatile residue us-ing the method specified in 2008 Appendix C to ARI Standard700-2006
23、, part 3.6.5 Non-absorbable GasesDetermine non-absorbablegases using the method specified in 2008 Appendix C to ARIStandard 700-2006, part 5.6.6 Suspended Matter or SedimentWhile performing thenonvolatile residue analysis, examine visually for any sus-pended matter or sediment. Observation of any su
24、spendedmatter or sediment shall constitute failure of this test method.7. Container, Packaging, and Package Marking7.1 Containers used for shipping and storage of HFC-23conforming to this specification shall be marked in the accor-dance with Code of Federal Regulations (CFR) Title 49, Part172 Sub D.
25、 The proper shipping name is UN1984,trifluoromethane, “nonflammmable gas“ (49 CFR 172.101). Inaddition to DOT requirements, containers shall be marked withthe following information as a minimum:7.1.1 Suppliers name and address,7.1.2 HFC-23 (trifluoromethane), and7.1.3 Statement that material conform
26、s to ASTM Specifica-tion D6126/D6126M.8. Keywords8.1 CHF3; FE-13; fire fighting; fire fighting agent; fireprotection; fire suppressant; HFC-23; hydrofluorocarbon; trif-luoromethaneTABLE 1 RequirementsProperty RequirementHFC-23 purity, %, mol/mol, max 99.0Acidity, ppm by mass, as HCI, max 3.0Water co
27、ntent, ppm by mass, max 10Nonvolatile residue, % by weight, max 0.08Suspended matter or sediment none visibleD6126/D6126M 11 (2015)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard
28、 are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif n
29、ot revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which
30、 you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,Uni
31、ted States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 11 (2015)3
