1、Designation:D712412Standard Specification forBenzene for Use with Zeolite Based Catalysts1This standard is issued under the fixed designation D7124;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
2、 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 use with zeolitebased catalysts.1.2 The following applies to all specified limits in thisspecification:for pu
3、rposes of determining conformance 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
4、are to be regarded as thestandard.The values given in parentheses are for informationonly.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 Wa
5、sh Color of Industrial Aro-matic HydrocarbonsD1209 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Aromatic Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry(Withdrawn 2009)3D3437 Practic
6、e for Sampling and 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 Brom
7、ine Index of Aromatic 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 Co
8、u-lometric Karl Fischer TitrationD7011 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
9、 for Ultra Low Nitrogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionD7359 Test Method for Total Fluorine,Chlorine and Sulfurin Aromatic Hydrocarbons and Their Mixtures by Oxida-tive Pyrohydrolytic Combustion followed by Ion Chroma-tography Detection
10、(Combustion Ion Chromatography-CIC)D7360 Test Method for Analysis of Benzene by Gas Chro-matography with External CalibrationD7375 Test Method for Trace Quantities of Water in Aro-matic Hydrocarbons and Their Mixtures by CoulometricKarl Fischer TitrationD7457 Test Method for Determining Chloride in
11、AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberD7536 Test Method for Chlorine in Aromatics by Mono-chromatic Wavelength Dispersive X-ray FluorescenceSpectrometryE2
12、9 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1064 Test Method for Water in Organic Liquids by Coulo-metric Karl Fischer Titration1This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and i
13、s the direct responsibility ofSubcommittee D16.01 on Benzene,Toluene,Xylenes,Cyclohexane and TheirDerivatives.Current edition approved Nov.1,2012.Published December 2012.Originallyapproved in 2005.Last previous edition approved in 2011 as D7124 11.DOI:10.1520/D7124-12.2For referenced ASTM standards,
14、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.*A Summary of
15、 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 2.2 Other Document:OSHA Regulations,29 CFRparagraphs 1910.1000 and1910.120043.Properties3.1 Benzene for use with zeolite based catalysts s
16、hallconform to the following requirements:PropertySpecificationASTM TestMethodABenzene,min,weight%99.8D4492 or D7360 or D7504Sulfur,max,mg/kg1.0D7183Thiophene,max,mg/kg0.6D1685 or D4735 orD7011Toluene,max,weight%0.05D4492 or D7360 or D7504Nonaromatic hydrocarbons,max,weight%0.15D4492 or D7360 or D7504Nitrogen,max,mg/kg0.5D6069 or D7184Chlorides,max,mg/kg1D7359 or D7457 or D7536AppearanceB.Color,max,PtCo scale15D1209 or D5386AIf more than one method is listed for a property the producer and user
