ASTM_D_5871_-_12.pdf

Designation:D587112Standard Specification forBenzene for Cyclohexane Feedstock1This standard is issued under the fixed designation D5871;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 indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers benzene for cyclohexane feed-stock.1.2 The following applies to all specified limits in thisstandard:for purposes of determining conformance with thisstandard,an observed value or a calculated value shall berounded 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 as thestandard.The values given in parentheses are for informationonly.1.4 Consult current OSHA regulations suppliers MaterialSafety Data Sheets for all materials used in this specification.2.Referenced Documents2.1 ASTM Standards:2D848 Test Method for Acid Wash Color of Industrial Aro-matic HydrocarbonsD852 Test Method for Solidification Point of BenzeneD1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry(Withdrawn 2009)3D3437 Practice for Sampling and Handling Liquid CyclicProductsD4017 Test Method for Water in Paints and Paint Materialsby Karl Fischer MethodD4492 Test Method for Analysis of Benzene by Gas Chro-matographyD4735 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas ChromatographyD5386 Test Method for Color of Liquids Using TristimulusColorimetryD5713 Test Method forAnalysis of High Purity Benzene forCyclohexane Feedstock by Capillary Gas Chromatogra-phyD6875 Test Method for Solidification Point of IndustrialOrganic Chemicals by ThermistorD7011 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas Chromatography and SulfurSelective DetectionD7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD7375 Test Method for Trace Quantities of Water in Aro-matic Hydrocarbons and Their Mixtures by CoulometricKarl Fischer TitrationD7504 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 Document:OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.120041This 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 Nov.1,2012.Published December 2012.Originallyapproved in 1996.Last previous edition approved in 2011 as D5871 11.DOI:10.1520/D5871-12.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.*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 States1 3.Properties3.1 Benzene for Cyclohexane Feedstock shall conform tothe following requirements:PropertySpecificationASTM Test MethodABenzene,min,weight%99.90D4492 or D5713 orD7504Sulfur,max,mg/kg1.0D7183Thiophene,max,mg/kg0.6D1685,D4735 orD7011Toluene plus methylcyclohexane max,mg/kg150D5713Methylcyclopentane,max mg/kg100D5713N-hexane,max,mg/kg80D5713Acid wash color,maxpass with 1D848AppearanceB.Color,max,Pt-Co scale10D1209 or D5386Solidification point,anhydrous basis,min,C5.45D852 or D6875AIf more than one method is listed for a property the producer and user shouldagree on the referee method.BClear liquid free of sediment and haze when observed at 18.3 to 25.6C(65 to78F).3.2 See Section 5 for non-mandatory supplementary re-quirements.4.Sampling4.1 Sample the material in accordance with Practice D3437.5.Supplementary Requirements(Non-mandatory)5.1 The following supplementary requirements shall applywhen agreed upon by the supplier and purchaser:PropertyASTM Test MethodAWaterD4017 or D7375AIf more than one method is listed,the producer and user should agree on thereferee method.6.Keywords6.1 benzene;cyclohexane feedstock;puritySUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue(D5871 11)that may impact the use of this standard.(Approved No