1、Designation:D231820Standard Test Method forQuinoline-Insoluble(QI)Content of Tar and Pitch1This standard is issued under the fixed designation D2318;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number i
2、n 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 thequinoline-insoluble matter(QI)in tar and pitch.1.2 Since this test method is empirical,strict adhe
3、rence toall details of the procedure is necessary.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility
4、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.For hazards information,see Section 7.1.5 This international standard was developed in accor-dance with internationally recognized
5、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 De
6、nsity 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
7、 and Related MaterialsD4296 Practice for Sampling PitchD7280 Test Method for Quinoline-Insoluble(QI)Content ofTar and Pitch by Stainless Steel Crucible FiltrationE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Summary of Test Me
8、thod3.1 The sample is digested in hot quinoline and filtered.Theinsoluble material is washed,dried,and weighed.4.Significance and Use4.1 This test method is useful in evaluating and character-izing tar and pitch,and as one element in establishing theuniformity of shipments and sources of supply.5.Ap
9、paratus5.1 Filtering Crucibles,porcelain,with fine-porositybottom,25 mL to 40 mL capacity,high-form,maximum porediameter,7 m.5.2 Filter ApparatusFilter flask and tube with crucibleadapter.5.3 SievesU.S.Standard 600 m(No.30)and 250 m(No.60),conforming to Specification E11.5.4 Electric Hot Plate or Wa
10、ter Bath,maintained at 75 C 65 C.6.Reagents and Materials6.1 Quinoline,Refined,meeting the following requirements:6.1.1 The quinoline shall distill from 5%to 95%within arange of 2 C that shall include the temperature of 237.4 Cafter corrections for barometric pressure and emergent stemhave been appl
11、ied.The distillation shall be carried out inaccordance with Test Method D850 using a total immersionthermometer with a range from 195 C to 305 C,graduated in0.5 C,and conforming to the requirements for Thermometer69C as described in Specification E1.Temperature measuringdevices such as precision the
12、rmocouples,resistance tempera-ture detectors(RTDs),and liquid-in-glass thermometers withequal or better accuracies in the appropriate temperature rangemay be used.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricantsand is the direct respo
13、nsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved June 1,2020.Published June 2020.Originallyapproved in 1964.Last previous edition approved in 2015 as D2318 15.DOI:10.1520/D2318-20.2For referenced ASTM standards,visit the ASTM website,
14、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.*A Summary of Changes section appear
15、s 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
16、 theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.6.1.2 The quinoline shall have a specific gravity at 15.5/15.5 C of 1.092 to 1.098,as determined by Test Method D71,or other method of equivalent accuracy.6.1.3 The quinoline shall be clear and light in color and shallcontain less than 0.5%volume of water as determined by TestMethod D95.If not,redistill the quinoline in all-glassapparatus,discardi
