1、Designation: D7124 17Standard 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 num
2、ber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers benzene for use with zeolitebased catalysts.1.2 The following applies to all specified limits in thisspecificati
3、on: for purposes 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 state
4、d in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.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 w
5、ith 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 Standar
6、ds:2D848 Test Method for Acid Wash Color of Industrial Aro-matic HydrocarbonsD1492 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Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry (Withdrawn 2009)3D3437 Practice for Sampling and Handling Liquid
7、 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 Aromatic Hydro-carbon
8、s by Electrometric TitrationD6304 Test Method for Determination of Water in Petro-leum Products, Lubricating Oils, and Additives by Cou-lometric Karl Fischer TitrationD7011 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas Chromatography and SulfurSelective DetectionD7183 Tes
9、t 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 DetectionD7359 Test Method for Total Fluorine, Chlorine
10、and Sulfurin Aromatic Hydrocarbons and Their Mixtures by Oxida-tive Pyrohydrolytic Combustion followed by Ion Chroma-tography Detection (Combustion Ion Chromatography-CIC)D7360 Test Method for Analysis of Benzene by Gas Chro-matography with External CalibrationD7375 Test Method for Trace Quantities
11、of Water in Aro-matic Hydrocarbons and Their Mixtures by CoulometricKarl Fischer Titration (Withdrawn 2017)3D7457 Test Method for Determining Chloride in AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chr
12、omatography andEffective Carbon NumberD7536 Test Method for Chlorine in Aromatics by Mono-chromatic Wavelength Dispersive X-ray FluorescenceSpectrometryD8005 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)1This specification is under the jurisdiction of ASTM Committee D16 onAromatic,
13、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 June 1, 2017. Published June 2017. Originallyapproved in 2005. Last previous edition approved in 2016 as D7124
14、16. DOI:10.1520/D7124-17.2For 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 h
15、istorical standard is referenced onwww.astm.org.Copyright 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 De
16、cision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1064 Test Method for W
17、ater 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 and1910.120043. Properties3.1 Benzene for use with zeolite based catalysts shallco
18、nform to the following requirements:Property SpecificationASTM TestMethodABenzene, min, weight % 99.8 D4492 or D7360or D7504Sulfur, max, mg/kg 1.0 D7183Thiophene, max, mg/kg 0.6 D1685 or D4735 orD7011Toluene, max, weight % 0.05 D4492 or D7360 orD7504Nonaromatic hydrocarbons, max,weight %0.15 D4492 o
19、r D7360 orD7504Nitrogen, max, mg/kg 0.5 D7184Chlorides, max, mg/kg 1 D7359 or D7457 orD7536Appearance, free of haze,particulates or suspendedmatterparticlespass E2680Color, max, PtCo scale 15 D5386 or D8005AIf more than one method is listed for a property the producer and user shouldagree on the ref
20、eree method.3.2 See Section 5.1 for non-mandatory supplementary re-quirements.4. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Supplementary Requirements (Non-mandatory)5.1 The following supplementary requirements shall applywhen agreed upon by the supplier and purcha
21、ser.Property ASTM Test MethodA1,4 Dioxane D4492 or D7360 orD7504Acid wash color, max D848Bromine index, max D1492 or D5776Water D6304 or E1064 orD7375AIf more than one method is listed, the producer and user should agree on thereferee method.6. Keywords6.1 benzene; purity; zeoliteASTM International
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24、ressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at
25、 the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585
26、(phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 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.D7124 172
