ASTM_D_7280_-_20.pdf

Designation:D728020Standard Test Method forQuinoline-Insoluble(QI)Content of Tar and Pitch byStainless Steel Crucible Filtration1This standard is issued under the fixed designation D7280;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.1.Scope*1.1This test method covers the determination of thequinoline-insoluble matter(QI)in tar and pitch using astainless steel filtering crucible and a filtration membrane.1.2 This test method was evaluated in round robin testingusing materials in the range of zero to twenty quinolineinsoluble weight percent(wt%).1.3 Since this test method is empirical,strict adherence toall details of the procedure is necessary.1.4 The values stated in SI units are to be regarded 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 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-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch andAsphalt(Displacement Method)D95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD329 Specification for AcetoneD362 Specification for Industrial Grade Toluene(Withdrawn1989)3D850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD2318 Test Method for Quinoline-Insoluble(QI)Content ofTar and PitchD4296 Practice for Sampling PitchE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Summary of Test Method3.1 The sample is digested in hot quinoline and filtered.Theinsoluble material is washed,dried,and weighed.4.Significance and Use4.1This test method is useful in evaluating and character-izing tar and pitch.It is also useful as one element inestablishing the uniformity of shipments and sources of supply.5.Apparatus5.1 Filtering Crucibles,stainless steel,with fine-screenbottom,25 mL to 40 mL capacity,high-form.4See Fig.1.5.2 Filter Membrane,PFTE membrane without backing,10 m porosity,25 mm disk.55.3 Filter Apparatus,500 mL filter flask and tube withcrucible adapter.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved June 1,2020.Published July 2020.Originally approvedin 2006.Last previous edition approved in 2015 as D7280 15.DOI:10.1520/D7280-20.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4The sole source of supply of the crucibles known to the committee at this timeis Drabik Tool&Die,15601 Commerce Park Dr.,Cleveland,OH 44142.If you areaware of alternative suppliers,please provide this information to ASTM Interna-tional Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee,1which you may attend.5The sole source of supply of the filter membranes known to the committee atthis time is Mitex brand,Part No.LCWP 02500,available from MilliporeCorporation,290 Concord Road Billerica,MA01821.If you are aware of alternativesuppliers,please provide this information to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee,1which you may attend.*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.5.4 Sieves,U.S.Standard 600 m(No.30)and 250 m(No.60),conforming to Specifica