1、Designation: D7280 06 (Reapproved 2011)D7280 15Standard 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 ado
2、ption 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 Scope*1.1 This test method covers the determination of the quinoline-insol
3、uble matter (QI) in tar and pitch using a stainless steelfiltering crucible and a filtration membrane.1.2 This test method was evaluated in round robin testing using materials in the range of zero to twenty quinoline insolubleweight percent (wt%).1.3 Since this test method is empirical, strict adher
4、ence to all details of the procedure is necessary.1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the respons
5、ibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch and Asphalt (Displacement Method)D95 Test Meth
6、od for Water in Petroleum Products and Bituminous Materials by DistillationD329 Specification for AcetoneD362 Specification for Industrial Grade Toluene (Withdrawn 1989)3D850 Test Method for Distillation of Industrial Aromatic Hydrocarbons and Related MaterialsD2318 Test Method for Quinoline-Insolub
7、le (QI) Content of Tar and PitchD4296 Practice for Sampling PitchE1 Specification for ASTM Liquid-in-Glass ThermometersE11 Specification for Woven Wire Test Sieve Cloth and Test SievesE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method3. Summary of Test
8、Method3.1 The sample is digested in hot quinoline and filtered. The insoluble material is washed, dried, and weighed.4. Significance and Use4.1 This test method is useful in evaluating and characterizing tar and pitch. It is also useful as one element in establishing theuniformity of shipments and s
9、ources of supply.1 This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of SubcommitteeD02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.Current edition approved May 1, 2011Dec. 1, 2015. P
10、ublished May 2011December 2015. Originally approved in 2006. Last previous edition approved in 20062011 asD7280 06 (2011).1. DOI: 10.1520/D7280-06R11.10.1520/D7280-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual B
11、ook of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indica
12、tion of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be con
13、sidered the official document.*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 States15. Apparatus5.1 Filtering Crucibles, stainless steel, with finescreenfine-screen bottom, 25
14、25 mL to 40-mL40 mL capacity, high-form.4 SeeFig. 1.5.2 Filter Membrane, PFTE membrane without backing, 10-m10 m porosity, 25-mm25 mm disk.55.3 Filter Apparatus, 500-mL500 mL filter flask and tube with crucible adapter.5.4 Sieves, U.S. Standard 600-m600 m (No. 30) and 250-m250 m (No. 60), conforming
15、 to Specification E11.4 The sole source of supply of the crucibles known to the committee at this time is Drabik Tool pitch; QI; quinoline insolubles; tarSUMMARY OF CHANGESSubcommittee D02.05 has identified the location of selected changes to this standard since the last issue(D7280 ) that may impac
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