1、Designation:D215811Designation:317/95Standard 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
2、.A number in parentheses 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 38C that are present in liquefiedpetroleum gases.The
3、extraneous materials 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
4、heavy contaminants 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 WARNINGMercury has been de
5、signated by manyregulatory agencies as a hazardous material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma
6、-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.1.5 The values stated in SI units are to be regarded
7、asstandard.No other units of measurement are included in thisstandard.1.6 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 and health practices and determine the ap
8、plica-bility of regulatory limitations prior to use.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Documents2.1 ASTM Standards:2D96 Test Method for Water and Sediment in Crude Oil byCentrifuge Method(Field Procedure)(Withdrawn 2000)3D1796 Test Method for Water and Sediment in Fuel Oils bythe Centrifuge Method(Laboratory Procedure)D1
9、835 Specification for Liquefied Petroleum(LP)GasesE1 Specification for ASTM Liquid-in-Glass Thermometers2.2 Energy Institute Document:IP Test Methods-Appendix A.Specifications-IP standardthermometers43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 oil stain observation,nthe vol
10、ume of solvent-residue mixture required to yield an oil stain or ring thatpersists for 2 minutes under specified conditions on absorbentpaper.3.1.2 residue,nthe volume,measured to the nearest 0.05mL,of the residual material boiling above 38C resulting fromthe evaporation of 100 mL of sample under th
11、e specifiedconditions of this test method.3.1.3 solvent-residue mixture,na mixture(solution)of 10mL of solvent with any residue remaining in the centrifugetube at the conclusion of the first step in this test method.4.Summary of Test Method4.1 A 100-mL sample of liquefied petroleum gas is weath-ered
12、 in a 100-mL centrifuge tube.The volume of residueremaining after heating the tube to 38C is measured andrecorded.4.2 To dissolve any residue,10 mLof solvent is added to thecentrifuge tube.Small,measured volumes of solvent-residue1This test method is under the jurisdiction of ASTM Committee D02 onPe
13、troleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.H0 on Liquefied Petroleum Gas.Current edition approved Jan.1,2011.Published February 2011.Originallyapproved in 1963.Last previous edition approved in 2005 as D215805.DOI:10.1520/D2158-11.2For referenced ASTM standar
14、ds,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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available
15、 from Energy Institute,61 New Cavendish St.,London,WIG 7AR,U.K.www.energyinstpubs.org.uk*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 States1 mixture are deposited on an absorbent
16、 paper in a specifiedmanner.The appearance of the absorbent paper to which theresidue solution has been added in measured increments isobserved and recorded.5.Significance and Use5.1 Control over the residue content(required by Specifica-tion D1835)is of considerable importance in end-use applica-tions of LPG.In liquid feed systems residues can lead totroublesome deposits and,in vapor withdrawal systems,resi-dues that are carried over can foul regulating equipment.Thosethat remain will accumulat
