1、Designation:D215821Standard Test Method forResidues in Liquefied Petroleum(LP)Gases1This standard is issued under the fixed designation D2158;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 paren
2、theses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of extraneousmaterials weathering above 38 C that are present in liquefiedpetroleum gases.The extraneous materi
3、als will generally bedissolved in the LPG,but may have phase-separated in someinstances.1.2 Liquefied petroleum gases that contain certain anti-icingadditives can give erroneous results by this test method.1.3 Although this test method has been used to verifycleanliness and lack of heavy contaminant
4、s in propane formany years,it might not be sensitive enough to protect someequipment from operational problems or increased mainte-nance.A more sensitive test,able to detect lower levels ofdissolved contaminants,could be required for some applica-tions.1.4 The values stated in SI units are to be reg
5、arded asstandard.No other units of measurement are included in thisstandard.1.5 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
6、and deter-mine the applicability of regulatory limitations prior to use.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
7、-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D96 Test Method for Water and Sediment in Crude Oil byCentrifuge Method(Field Procedure)(Withdrawn 2000)3D1796 Test Method for Water and Sediment in Fuel Oils bythe C
8、entrifuge Method(Laboratory Procedure)D1835 Specification for Liquefied Petroleum(LP)GasesD7756 Test Method for Residues in Liquefied Petroleum(LP)Gases by Gas Chromatography with Liquid,On-Column InjectionE1137 Specification for Industrial Platinum Resistance Ther-mometersE2251 Specification for Li
9、quid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsE2877 Guide for Digital Contact Thermometers2.2 Other Standards:EN 15470 Liquefied petroleum gases Determination ofdissolved residues High temperature gas chromato-graphic method4EN 15471 Liquefied petroleum gases Determination ofdiss
10、olved residues High temperature gravimetricmethod4EN 16423 Liquefied petroleum gases Determination ofdissolved residue Gas chromatographic method usingliquid,on-column injection4EN ISO 6246 Petroleum products Gum content of fuels Jet evaporation method5ISO 13757 Liquefied petroleum gases Determinati
11、on ofoily residues High-temperature method53.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 oil stain observation,nthe volume of solvent-residue mixture required to yield an oil stain or ring thatpersists for 2 min under specified conditions on absorbentpaper.3.1.2 residue,nthe
12、volume,measured to the nearest0.05 mL,of the residual material boiling above 38 C resulting1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.H0 on Liquefied Petroleum Gas.Current edit
13、ion approved July 1,2021.Published July 2021.Originally approvedin 1963.Last previous edition approved in 2016 as D2158 16a1.DOI:10.1520/D2158-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards vol
14、ume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from European Committee for Standardization(CEN),AvenueMarnix 17,B-1000,Brussels,Belgium,http:/www.cen.eu.5Available from Int
15、ernational Organization for Standardization(ISO),ISOCentral Secretariat,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,https:/www.iso.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,P
16、A 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.1from the evaporation of 100 mL of sample under the specifiedconditions of this test method.3.1.3 solvent-residue mixture,na mixture(solution)of10 mL of solvent
