1、Designation: D4734 08 D4734 12Standard 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 parenthes
2、es 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 th
3、is 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
4、units of measurement are included in this standard.1.4 Consult current OSHA regulations, suppliers Material Safety Data Sheets, and local regulations for all materials used inthis specification.2. Referenced Documents2.1 ASTM Standards:2D848 Test Method for Acid Wash Color of Industrial Aromatic Hyd
5、rocarbonsD852 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Hydrocarbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene by Spectrophotometry (Withdrawn 2
6、009)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 ColorimetryD5776
7、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 DetectionD6304 Test Method for Determination of Water in Petroleum Products, Lubricating Oils,
8、and Additives by Coulometric KarlFischer TitrationD6875 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 SelectiveDetectionD7183 Test Method for Determination o
9、f 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 of Benzene by Gas Chromatography with Extern
10、al CalibrationD7375 Test Method for Trace Quantities of Water in Aromatic Hydrocarbons and Their Mixtures by Coulometric Karl FischerTitration1 This specification is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcom
11、mitteeD16.01 on Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives.Current edition approved Dec. 1, 2008Nov. 1, 2012. Published December 2008December 2012. Originally approved in 1987. Last previous edition approved in 20072008as D4734 07.D4734 08. DOI: 10.1520/D4734-08.10.1520/D4734-12.2
12、For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is r
13、eferenced 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 depict all changes accurately, ASTM recommends th
14、at 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 International, 100 Barr Harbor Drive, PO Box C700, West
15、Conshohocken, PA 19428-2959. United States1D7504 Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective CarbonNumberE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE1064 Test Method for Water in Orga
16、nic 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 Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.D4734
17、1223. 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 1.0 D7183Thiophene, max, mg/kg 0.6 D1685, D4735, orD7011Toluene, max, weight% 0.05 D4492 or D7360 orD7504Nonaromati
18、c hydrocarbons, max,weight %0.10 D4492 or D7360 orD7504Nitrogen, max, mg/kg (if needed) D6069 or D71841,4 Dioxane (if needed) D4492Acid wash color, max pass with 1 D848Bromine index, max 20 D1492 or D5776Water (if needed) D6304 orE1064 orD7375Appearance B .Color, max, PtCo scale 20 D1209 or D5386Sol
19、idification point, anhydrousbasis, min, C5.45 D852 or D6875_A 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.D4734 1234. Sampling4.1 The material shall be sampl
20、ed 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 D71841,4 Dioxane D4492Water D6304 or E1064 or D7375A If m
21、ore 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 issue(D4734 - 07D4734) 08) that may impact the use of thi
22、s standard. (Approved DecemberNovember 1,2008.)2012.)(1) Added Modified Table 3.1 and 5.1 to allow Test Method D7375D7360 as an alternate method for water.to Test Method D4492.(2) Modified Table 3.1 and 5.1 to allow Test Method D7504 as an alternate to Test Method D4492.(3) Modified Table 3.1 to eli
23、minate non-mandatory requirements. Added 3.2 and Section 5 to indicate non-mandatory items.Committee D16 has identified the location of selected changes to this standard since the last issue (D4734 - 06)that may impact the use of this standard. (Approved June 1, 2007.)(1) Changed method entry for su
24、lfur in 3.1.(2) Changed method entry for nitrogen in 3.1.ASTM International takes no position respecting 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 paten
25、t 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 reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited eithe
26、r 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 theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair he
27、aring 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 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 ASTM website (www.astm.org/COPYRIGHT/).D4734 124
