1、Designation:D200719Standard Test Method forCharacteristic Groups in Rubber Extender and ProcessingOils and Other Petroleum-Derived Oils by the Clay-GelAbsorption Chromatographic Method1This standard is issued under the fixed designation D2007;the number immediately following the designation indicate
2、s the year oforiginal adoption 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*1.1 This test method covers a procedure for classifying
3、oilsamples of initial boiling point of at least 260 C(500 F)intothe hydrocarbon types of polar compounds,aromatics andsaturates,and recovery of representative fractions of thesetypes.This classification is used for specification purposes inrubber extender and processing oils.NOTE1See Test Method D22
4、26.1.2 This test method is not directly applicable to oils ofgreater than 0.1%by mass pentane insolubles.Such oils canbe analyzed after removal of these materials,but precision isdegraded(see Appendix X1).1.3 The values stated in SI units are to be regarded as thestandard.The values given in parenth
5、eses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory
6、limitations prior to use.Specific warning statements are given in 6.1,Section 7,A1.4.1,and A1.5.5.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International
7、Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2226 Classification for Various Types of Petroleum Oilsfor Rubber Compounding UseD5309 Specification for Cyclohexane 999E691 Practice for C
8、onducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 The following terms refer to the hydrocarbon typesand structural groups as measured by this test method:3.1.2 aromatics,nmaterial that,on percolation,pas
9、sesthrough a column of adsorbent clay in a n-pentane eluent butadsorbs on silica gel under the conditions specified.3.1.3 asphaltenes,or n-pentane insolubles,ninsolublematter that precipitates from a solution of oil in n-pentaneunder the specified conditions.3.1.4 polar aromatics,nsynonym for polar
10、compounds.3.1.5 polar compounds,nmaterial retained on adsorbentclay after percolation of the sample in n-pentane eluent underthe conditions specified.3.1.6 saturates,nmaterial that,on percolation in an-pentane eluent,is not adsorbed on either the clay or silica gelunder the conditions specified.4.Su
11、mmary of Test Method4.1 The sample is diluted with solvent and charged to aglass percolation column containing clay in the upper sectionand silica gel plus clay in the lower section.n-pentane is thencharged to the double column until a definite quantity of1This test method is under the jurisdiction
12、of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0C on Liquid Chromatography.Current edition approved Dec.15,2019.Published January 2020.Originallyapproved in 1968.Last previous edition approved in 2016 as D2007 11(2016).DO
13、I:10.1520/D2007-19.2For 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.*A Summary of Changes section appears at the en
14、d 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 theDevelop
15、ment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.effluent has been collected.The upper(clay)section is removedfrom the lower section and washed further with n-pentane.Atoluene-acetone mixture 50 to 50 by volum
16、e is then charged tothe clay section for desorption and a specified volume ofeffluent collected.The lower(gel)column may be desorbed byrecirculation of toluene.4.2 The solvents are completely removed from the recov-ered n-pentane and the toluene-acetone fractions and theresidues are weighed and calculated as saturate and polarcompounds contents.Aromatics may be calculated bydifference,or measured following evaporation of the tolueneused for desorption of the gel column.4.3 When the sample contai
