1、Designation:D231815Standard 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 and health practices and determine the applica-bility of regulatory limitations prior to use.For hazardsinformation,see Section 7.2.Referenced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch andAsphalt(Dis
5、placement 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 MaterialsD4296 Practic
6、e 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 Method3.1 The sample is digested in h
7、ot 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.Apparatus5.1 Filtering Crucibles,porc
8、elain,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 Water Bath,maintained at 75 C 65 C.6.
9、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 applied.The distillation shall be carri
10、ed 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 thermocouples,resistance tempera-ture
11、detectors(RTDs),and liquid-in-glass thermometers withequal or better accuracies in the appropriate temperature rangemay be used.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 quinoli
12、ne 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,discarding the first 5%and collecting the next90%.If the quinoline contains suspended matter but is clear,1This test method is unde
13、r the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricantsand is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved Dec.1,2015.Published December 2015.Originallyapproved in 1964.Last previo
14、us edition approved in 2014 as D2318 141.DOI:10.1520/D2318-15.2For 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
15、 last approved version of this historical standard is referenced onwww.astm.org.*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 light in color,and contains less than 0.5%wat
16、er,filter thequinoline through a crucible containing 5 g of Celite FilterAid.6.1.4 Store the quinoline in a tightly closed,dark bottle.6.2 Toluene,Industrial Pure,meeting Specification D362.6.3 Acetone,meeting Specification D329.6.4 Concentrated Hydrochloric Acid.6.5 Celite Analytical Filter Aid(CAFA)Dry to constantweight at 105 C,and store in tightly stoppered container.6.5.1 Do not use any other grade of filter aid becausefiltration characteristics may differ.CAFA is manufacturedonly by Manvil
