1、Designation: D 7280 06An American National StandardStandard Test Method forQuinoline-Insoluble (QI) Content of Tar and Pitch byStainless Steel Crucible Filtration1This standard is issued under the fixed designation D 7280; the number immediately following the designation indicates the year oforigina
2、l adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of thequinoline-insolub
3、le 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 adherenc
4、e 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
5、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.2. Referenced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch andAsphalt (Displacement Method)D95 Test Method fo
6、r Water in Petroleum Products andBituminous Materials by DistillationD 329 Specification for AcetoneD 362 Specification for Industrial Grade Toluene3D 850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD 2318 Test Method for Quinoline-Insoluble (QI) Contentof Ta
7、r and PitchD 4296 Practice for Sampling PitchE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Wire Cloth and Sieves for TestingPurposesE 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Summary of Test Method3.1 The sample i
8、s 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. It is also useful as one element inestablishing the uniformity of shipments and sources of supply.5. Ap
9、paratus5.1 Filtering Crucibles, stainless steel, with finescreenbottom, 25 to 40-mL capacity, high-form.4,5See Fig. 1.5.2 Filter Membrane, PFTE membrane without backing,10-m porosity, 25-mm disk.5,65.3 Filter Apparatus, 500-mL filter flask and tube withcrucible adapter.5.4 Sieves, U.S. Standard 600-
10、m (No. 30) and 250-m (No.60), conforming to Specification E11.5.5 Electric Hot Plate or Water Bath, maintained at 75 65C.6. Reagents and Materials6.1 Quinoline, Refinedmeeting the following require-ments:6.1.1 The quinoline shall distill from 5 to 95 % within arange of 2C that shall include the temp
11、erature of 237.4C aftercorrections for barometric pressure and emergent stem havebeen applied. The distillation shall be carried out in accordancewith Test Method D 850 using a total immersion thermometerwith a range from 195 to 305C, graduated in 0.5C, andconforming to the requirements for Thermome
12、ter 69C asdescribed in Specification E1.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.Current edition approved Nov. 1, 2006. Publi
13、shed December 2006.2For 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.3Withdrawn.4The sole source of supply of t
14、he crucibles known to the committee at this timeis Drabik Tool pitch; QI; quinoline insolubles; tarASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that deter
15、mination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or
16、withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that
17、 your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D7280065
