ASTM_D_4734_-_20.pdf

Designation:D473420Standard Specification forRefined Benzene-5451This standard is issued under the fixed designation D4734;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-545.1.2 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 in Practice E29.1.3 The values stated in SI units are to be regarded asstandard.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 international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D852 Test Method for Solidification Point of BenzeneD1492 Test Method for Bromine Index of Aromatic Hydro-carbons by Coulometric TitrationD3437 Practice for Sampling and Handling Liquid CyclicProductsD4735 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas ChromatographyD5386 Test Method for Color of Liquids Using TristimulusColorimetryD5776 Test Method for Bromine Index of Aromatic Hydro-carbons by Electrometric TitrationD6875 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 FluorescenceD7184 Test Method for Ultra Low Nitrogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionD7360 Test Method for Analysis of Benzene by Gas Chro-matography with External CalibrationD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberD8005 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1064 Test Method for Water in Organic Liquids by Coulo-metric Karl Fischer TitrationE2680 Test Method for Appearance of Clear,TransparentLiquids(Visual Inspection Procedure)2.2 Other Document:OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.120031This specification is under the jurisdiction of ASTM Committee D16 onAromatic,Industrial,Specialty and Related Chemicals and is the direct responsi-bility of Subcommittee D16.01 on Benzene,Toluene,Xylenes,Cyclohexane andTheir Derivatives.Current edition approved April 1,2020.Published April 2020.Originallyapproved in 1987.Last previous edition approved in 2019 as D4734 19.DOI:10.1520/D4734-20.2For 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 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.3.Properties3.1 Benzene-545 shall conform to the following require-ments:PropertySpecificationASTM TestMethodABenzene,min,mass%99.90D7360 or D7504Sulfur,max,mg/kg1.0D7183Thiophene,max,mg/kg0.6D4735 or D7011Toluene,max,mass%0.05D7360 or D7504Nonaromatic hydrocarbons,max,mass%0.10D7360 or D7504Bromine index,max20D1492 or D5776Appearance,free of haze,particulates or suspendedmatter particlespassE2680Color,max,PtCo scale20D5386 or D8005Solidification point,anhydrousbasis,min,C5.45D852 or D6875AIf more than one method is listed,the producer and user should agree on thereferee method.3.2 See Section S1.1 for non-mandatory supplementaryrequirements.4.Sampling4.1 The material shall be sampled in accordance withPractice D3437.5.Keywords5.1 benzene;benzene-545;p