1、Designation: D4734 12D4734 16Standard 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 parenthese
2、s 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 this standard: for purposes of determining conformance with thi
3、s standard,an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in expressingthe specification limit in accordance with the rounding-off method in Practice E29.1.3 The values stated in SI units are to be regarded as standard. No other u
4、nits of measurement are included in this standard.1.4 Consult current OSHA regulations, suppliers Material suppliers Safety Data Sheets, and local regulations for all materialsused in this specification.2. Referenced Documents2.1 ASTM Standards:2D848 Test Method for Acid Wash Color of Industrial Aro
5、matic HydrocarbonsD852 Test Method for Solidification Point of BenzeneD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D1492 Test Method for Bromine Index of Aromatic Hydrocarbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene by Spectrophotometry (Wi
6、thdrawn 2009)3D3437 Practice for Sampling and Handling Liquid Cyclic ProductsD4492 Test Method for Analysis of Benzene by Gas ChromatographyD4735 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas ChromatographyD5386 Test Method for Color of Liquids Using Tristimulus Colorime
7、tryD5776 Test Method for Bromine Index of Aromatic Hydrocarbons by Electrometric TitrationD6069 Test Method for Trace Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced PressureChemiluminescence Detection (Withdrawn 2015)3D6304 Test Method for Determination of Water in Petroleum P
8、roducts, Lubricating Oils, and Additives by Coulometric KarlFischer Titration (Withdrawn 2016)3D6875 Test Method for Solidification Point of Industrial Organic Chemicals by ThermistorD7011 Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography and Sulfur SelectiveD
9、etectionD7183 Test Method for Determination of Total Sulfur in Aromatic Hydrocarbons and Related Chemicals by UltravioletFluorescenceD7184 Test Method for Ultra Low Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced PressureChemiluminescence DetectionD7360 Test Method for Analysis
10、 of Benzene by Gas Chromatography with External CalibrationD7375 Test Method for Trace Quantities of Water in Aromatic Hydrocarbons and Their Mixtures by Coulometric Karl FischerTitration1 This specification is under the jurisdiction ofASTM Committee D16 on Aromatic Hydrocarbons and Related Chemical
11、s and is the direct responsibility of SubcommitteeD16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.Current edition approved Nov. 1, 2012June 1, 2016. Published December 2012June 2016. Originally approved in 1987. Last previous edition approved in 20082012 asD4734 08.D4734 12. D
12、OI: 10.1520/D4734-12.10.1520/D4734-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.3 The last app
13、roved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately dep
14、ict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM Internatio
15、nal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D7504 Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective CarbonNumberD8005 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)E29 Practice for Usi
16、ng Significant Digits in Test Data to Determine Conformance with SpecificationsE1064 Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200 44 Available from U.S. Government Printing Office Superint
17、endent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.D4734 1623. Properties3.1 Benzene-545 shall conform to the following requirements:Property Specification ASTM TestMethodABenzene, min, weight % 99.90 D4492 or D7360 orD7504Sulfur, max, mg/kg 1
18、.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 B .Color, max, PtCo scale 20 D1209 or D5386Colo
19、r, max, PtCo scale 20 D5386 or D8005Solidification point, anhydrousbasis, min, C5.45 D852 or D6875A If more than one method is listed, the producer and user should agree on the referee method.B Clear liquid at 18.3 to 25.6C.3.2 See Section 5 for non-mandatory supplementary requirements.4. Sampling4.
20、1 The material shall be sampled in accordance with Practice D3437.5. Supplementary Requirements (Non-mandatory)5.1 The following supplementary requirements shall apply when agreed upon by the supplier and purchaser:Property ASTM Test MethodsANitrogen, max, mg/kg D6069 or D7184Nitrogen, max, mg/kg D7
21、1841,4 Dioxane D4492Water D6304 or E1064 or D7375A If more than one method is listed, the producer and user should agree on the referee method.6. Keywords6.1 benzene; benzene-545; puritySUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last is
22、sue (D4734 08) 12) that may impact the use of this standard. (Approved NovemberJune 1, 2012.)2016.)(1) Modified Table 3.1 and 5.1 to allow Test Method D7360 as an alternate to Test Method D4492.Removed D1209 and addedD8005 in Section 2.(2) Modified Table 3.1 and 5.1 to allow Test Method D7504 as an
23、alternate to Test Method D4492.table in 3.1 to replace D1209with D8005.(3) Removed D6069 from Section 2.(4) Modified Table 3.1 to eliminate non-mandatory requirements. Added 3.2 and Section 5 to indicate non-mandatory items.tablein 5.1 to remove D6069.D4734 163ASTM International takes no position re
24、specting the validity of any patent rights asserted in connection with any item mentionedin this standard. 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
25、 standard is subject to revision at any time by the responsible technical committee and must be reviewed 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 Intern
26、ational 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 the address shown be
27、low.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 (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:/ 164
