ASTM_D_873_-_22.pdf

Designation:D87322British Standard 4456Designation:138/99Standard Test Method forOxidation Stability of Aviation Fuels(Potential ResidueMethod)1,2This standard is issued under the fixed designation D873;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method3covers the determination of thetendency of aviation reciprocating,turbine,and jet engine fuelsto form gum and deposits under accelerated aging conditions.(WarningThis test method is not intended for determiningthe stability of fuel components,particularly those with a highpercentage of low boiling unsaturated compounds,as thesemay cause explosive conditions within the apparatus.)NOTE1For the measurement of the oxidation stability(inductionperiod)of motor gasoline,refer to Test Method D525.1.2 The accepted SI unit of pressure is the kilo pascal(kPa);the accepted SI unit of temperature is C.1.3 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercury,or its vapor,has been dem-onstrated to be hazardous to health and corrosive to materials.Use caution when handling mercury and mercury-containingproducts.See the applicable product Safety Data Sheet(SDS)for additional information.The potential exists that sellingmercury or mercury-containing products,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 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 Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:4D381 Test Method for Gum Content in Fuels by Jet Evapo-rationD525 Test Method for Oxidation Stability of Gasoline(In-duction Period Method)D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD5452 Test Method for Particulate Contamination in Avia-tion Fuels by Laboratory FiltrationE1 Specification for ASTM Liquid-in-Glass Thermometers3.Terminology3.1 The following definitions of terms are all expressed interms of milligrams per 100 mL of sample,after“X”hoursaging,“X”being the accelerated aging(oxidation)period at100 C.3.2 Definitions of Terms Specific to This Standard:3.2.1 insoluble gum,ndeposit adhering to the glasssample container after removal of the aged fuel,precipitate,and soluble gum.3.2.1.1 DiscussionInsoluble gum is obtained by measur-ing the increase in mass of the glass sample container.3.2.2 potential gum,nsum of the soluble and insolublegum.1This test method is under the jurisdiction of ASTM International CommitteeD02 on Petroleum Products,Liquid Fuels,and Lubricants and is the directresponsibility of ASTM Subcommittee D02.14 on Stability,Cleanliness andCompatibility of Liquid Fuels.The technically equivalent standard as referenced isunder the jurisdiction of the Energy Institute Subcommittee SC-B-8.Current edition approved July 1,2022.Published August 2022.Originallyapproved in 1946.Last previous edition approved in 2018 as D873 12(2018).DOI:10.1520/D0873-22.2This test method has been developed through the cooperative effort betweenASTM and the Energy Institute,London.ASTM and IP standards were approved byASTM and EI technical committees as being technically equivalent but that does notimply both standards are identical.3Further information can be found in the June 1978,January 1979,and June1986 editions of the Institute of Petroleum Review.4For 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.*A Summary of Changes section appears at the end of this standardCopyright 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 standardization 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.13.2.3 precipitate,nsediment and suspended material in theaged fuel,obta