1、Designation:D473412Standard 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 th
2、e 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 observe
3、d 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 inc
4、luded in thisstandard.1.4 Consult current OSHA regulations,suppliers MaterialSafety Data Sheets,and local regulations for all materials usedin this specification.2.Referenced Documents2.1 ASTM Standards:2D848 Test Method for Acid Wash Color of Industrial Aro-matic HydrocarbonsD852 Test Method for So
5、lidification Point of BenzeneD1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D1492 Test Method for Bromine Index of Aromatic Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry(Withdrawn 2009)3D3437 Practice for Sampling a
6、nd Handling Liquid CyclicProductsD4492 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 TristimulusColorimetryD5776 Test Method for Bromine Index of Aro
7、matic Hydro-carbons by Electrometric TitrationD6069 Test Method for Trace Nitrogen in Aromatic Hydro-carbons by Oxidative Combustion and Reduced PressureChemiluminescence DetectionD6304 Test Method for Determination of Water in Petro-leum Products,Lubricating Oils,and Additives by Cou-lometric Karl
8、Fischer 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 Hydrocarb
9、ons 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 CalibrationD7375 Test Method fo
10、r 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 Co
11、nformance with SpecificationsE1064 Test Method for Water in Organic Liquids by Coulo-metric Karl Fischer Titration2.2 Other Document:OSHA Regulations,29 CFRparagraphs 1910.1000 and1910.120041This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemic
12、als 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 1987.Last previous edition approved in 2008 as D4734 08.DOI:10.1520/D4734-12.2For referenced ASTM s
13、tandards,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.4Ava
14、ilable 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
15、19428-2959.United States1 3.Properties3.1 Benzene-545 shall conform to the following require-ments:PropertySpecificationASTM TestMethodABenzene,min,weight%99.90D4492 or D7360 orD7504Sulfur,max,mg/kg1.0D7183Thiophene,max,mg/kg0.6D1685,D4735,orD7011Toluene,max,weight%0.05D4492 or D7360 orD7504Nonaroma
16、tic hydrocarbons,max,weight%0.10D4492 or D7360 orD7504Acid wash color,maxpass with 1D848Bromine index,max20D1492 or D5776AppearanceB.Color,max,PtCo scale20D1209 or D5386Solidification point,anhydrousbasis,min,C5.45D852 or D6875AIf more than one method is listed,the producer and user should agree on thereferee method.BClear liquid at 18.3 to 25.6C.3.2 See Section 5 for non-mandatory supplementary re-quirements.4.Sampling4.1 The material shall be sampled in accordance withPractice D3437.5.Suppleme
