1、Designation: D7280 06 (Reapproved 2011)Standard 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
2、, 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. Scope1.1 This test method covers the determination of thequinoline-insoluble matter (QI)
3、 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 detail
4、s 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
5、 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 for Water in Pet
6、roleum Products andBituminous Materials by DistillationD329 Specification for AcetoneD362 Specification for Industrial Grade Toluene3D850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD2318 Test Method for Quinoline-Insoluble (QI) Contentof Tar and PitchD4296 P
7、ractice 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 q
8、uinoline 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. Apparatus5.1 Filterin
9、g Crucibles, stainless steel, with finescreenbottom, 25 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.5.4 Sieves, U.S. Standard 600-m (No. 30) and 250-m (N
10、o.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 temperature of 237.4C after
11、corrections for barometric pressure and emergent stem havebeen applied. The distillation shall be carried out in accordance1This 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 Fue
12、ls, Petroleum Coke and Carbon Material.Current edition approved May 1, 2011. Published May 2011. Originallyapproved in 2006. Last previous edition approved in 2006 as D7280 061. DOI:10.1520/D7280-06R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Serv
13、ice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4The sole source of supply of the crucibles known to the committ
14、ee 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 determination of the validity of any s
15、uch 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 withdrawn. Your comments are invi
16、ted 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 your comments have not received
17、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 thi
18、s 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D7280 06 (2011)5
