1、Designation:D795114Standard Specification forDisproportionation(TDP)Toluene1This standard is issued under the fixed designation D7951;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses i
2、ndicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers Disproportionation(TDP)toluene.1.2 The following applies to all specified limits in thisspecification:for purposes of determining confor
3、mance withthis specification,an observed value or a calculated value shallbe rounded off“to the nearest unit”in the last right-hand digitused in expressing the specification limit,in accordance withthe rounding-off method of Practice E29.1.3 The values stated in SI units are to be regarded asstandar
4、d.No other units of measurement are included in thisstandard.1.4 Consult current OSHA regulations,suppliers SafetyData Sheets,and local regulations for all materials used in thisspecification.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is
5、 theresponsibility 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:2D848 Test Method for Acid Wash Color of Industrial Aro-matic HydrocarbonsD849 Test M
6、ethod for Copper Strip Corrosion by IndustrialAromatic HydrocarbonsD850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D2360 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by
7、 Gas ChromatographyD3437 Practice for Sampling and Handling Liquid CyclicProductsD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4492 Test Method for Analysis of Benzene by Gas Chro-matographyD5386 Test Method for Color of Liquids Using TristimulusCo
8、lorimetryD6526 Test Method for Analysis of Toluene by CapillaryColumn Gas ChromatographyD7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD7360 Test Method for Analysis of Benzene by Gas Chro-matography with External Calibra
9、tionD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Documents:3OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.12
10、001This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene,Toluene,Xylenes,Cyclohexane and TheirDerivatives.Current edition approved Dec.1,2014.Published January 2015.DOI:10.152
11、0/D7951-14.2For 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.3Available from U.S.Government Printing Office Superint
12、endent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Properties3.1 Disproportionation toluene shall conform to the follow-ing requirements:Pr
13、opertySpecificationASTMTest MethodAPurity,min,wt%95.0D2360,D6526,orD7504Benzene,max,wt%0.1D2360D6526 orD7504Impurities eluting afterOrthoxylene,max,wt%0.1D2360D6526,orD75041,4-Dioxane,max,mg/kg10D7504Nonaromatic hydrocarbons,max,wt%2.5D2360 orD7504Sulfur,max,mg/kg1D7183Acid wash color,maxpass with 2
14、D848Copper corrosionpass(1A or 1B)D849AppearanceB.Color,Pt/Co scale,max20D5386Relative density,15.56/15.56 C 0.869 to 0.873D4052AIf more than one method is listed for a property the producer and user shall agreeon the reference method.BClear liquid free of sediment and haze at 18.3 to 25.6 C.4.Sampl
15、ing4.1 The material shall be sampled in accordance withPractice D3437.5.Keywords5.1 tolueneASTM 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
16、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 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
