1、Designation: D4734 17Standard 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 indica
2、tes the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers benzene-545.1.2 The following applies to all specified limits in thisstandard: for purposes of determining conformance with thisstandard,
3、 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 measu
4、rement 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 establi
5、shed 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:2D848 Test Method for Acid Wash Color of Industrial Aro-matic Hydr
6、ocarbonsD852 Test Method for Solidification Point of BenzeneD1492 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Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry (Withdrawn 2009)3D3437 Practice for Sampling and Handling Liquid CyclicProductsD4
7、492 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-carbons by Electrometri
8、c TitrationD6304 Test Method for Determination of Water in Petro-leum Products, Lubricating Oils, and Additives by Cou-lometric Karl Fischer TitrationD6875 Test Method for Solidification Point of IndustrialOrganic Chemicals by ThermistorD7011 Test Method for Determination of Trace Thiophenein Refine
9、d 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 Chem
10、iluminescence DetectionD7360 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 Titration (Withdrawn 2017)3D7504 Test Method for Trace Impurities i
11、n 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 Specifications1This specification is under the jurisdiction of AST
12、M 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 June 1, 2017. Published June 2017. Originallyapproved in 1987. Last previous editio
13、n approved in 2016 as D4734 16. DOI:10.1520/D4734-17.2For 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 las
14、t approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E1064 Test Method for Water in Organic Liquids by Coulo-metric Karl Fischer TitrationE2680 Test Method for App
15、earance of Clear, TransparentLiquids (Visual Inspection Procedure)2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120043. Properties3.1 Benzene-545 shall conform to the following require-ments:Property SpecificationASTM TestMethodABenzene, min, weight % 99.90 D4492 or D7360
16、orD7504Sulfur, max, mg/kg 1.0 D7183Thiophene, max, mg/kg 0.6 D1685, D4735,orD7011Toluene, max, weight% 0.05 D4492 or D7360 orD7504Nonaromatic hydrocarbons, max,weight %0.10 D4492 or D7360 orD7504Acid wash color, max pass with 1 D848Bromine index, max 20 D1492 or D5776Appearance, free of haze,particu
17、lates or suspendedmatter particlespass E2680Color, max, PtCo scale 20 D5386 or D8005Solidification point, anhydrousbasis, min, C5.45 D852 or D6875AIf more than one method is listed, the producer and user should agree on thereferee method.3.2 See Section 5 for non-mandatory supplementary re-quirement
18、s.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 purchaser:Property ASTM Test MethodsANitrogen, max, mg/kg D71841,4 Dioxane D4492Wa
19、ter D6304 or E1064 or D7375AIf more than one method is listed, the producer and user should agree on thereferee method.6. Keywords6.1 benzene; benzene-545; purityASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this st
20、andard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be rev
21、iewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsi
22、ble 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 the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
23、onshohocken, 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 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights
24、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.D4734 172
