1、Designation: D 7124 07Standard Specification forBenzene for Use with Zeolite Based Catalysts1This standard is issued under the fixed designation D 7124; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 thisspecifi
3、cation: 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 s
4、tated in SI units 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:2D 848
5、Test Method for Acid Wash Color of IndustrialAromatic HydrocarbonsD 1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D 1492 Test Method for Bromine Index of Aromatic Hy-drocarbons by Coulometric TitrationD 1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometryD 343
6、7 Practice for Sampling and Handling Liquid CyclicProductsD 4492 Test Method for Analysis of Benzene by GasChromatographyD 4735 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas ChromatographyD 5194 Test Method for Trace Chloride in Liquid AromaticHydrocarbonsD 5386 Test Meth
7、od for Color of Liquids Using TristimulusColorimetryD 5776 Test Method for Bromine Index of Aromatic Hy-drocarbons by Electrometric TitrationD 6069 Test Method for Trace Nitrogen in Aromatic Hy-drocarbons by Oxidative Combustion and Reduced Pres-sure Chemiluminescence DetectionD 6304 Test Method for
8、 Determination of Water in Petro-leum Products, Lubricating Oils, and Additives by Coulo-metric Karl Fischer TitrationD 7011 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas Chromatography and SulfurSelective DetectionD 7183 Test Method for Determination of Total Sulfur inAr
9、omatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD 7184 Test Method for Ultra Low Nitrogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifica
10、tionsE 1064 Test Method for Water in Organic Liquids byCoulometric Karl Fischer Titration2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120031This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct r
11、esponsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved June 1, 2007. Published July 2007. Originally approvedin 2005. Last previous edition approved in 2006 as D 7124 06.2For referenced ASTM standards, visit the ASTM website, www.a
12、stm.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.3Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washin
13、gton, DC 20401, http:/www.access.gpo.gov.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Properties3.1 Benzene for use with zeolite based catalysts shallconform to
14、the following requirements:Property SpecificationASTM TestMethodABenzene, min, weight % 99.8 D 4492Sulfur, max, mg/kg 1.0 D 7183Thiophene, max, mg/kg 0.6 D 1685 orD 4735 orD 7011Toluene, max, weight% 0.05 D 4492Nonaromatic hydrocarbons, max,weight %0.15 D 4492Nitrogen, max, mg/kg 0.5 D 6069 or D 718
15、41,4 Dioxane (if needed) D 4492Acid wash color, max (If needed) Pass with 1 D 848Bromine index, max (if needed) 10 D 1492 or D 5776Water (if needed) D 6304 or E 1064Chlorides, max, mg/kg 1 D 5194AppearanceB.Color, max, PtCo scale 15 D 1209 or D 5386_AIf more than one method is listed for a property
16、the producer and user shouldagree on the referee method.BClear liquid free of sediment and haze at 18.3 to 25.6C (65 to 78F)4. Sampling4.1 The material shall be sampled in accordance withPractice D 3437.5. Keywords5.1 benzene; purity; zeoliteSUMMARY OF CHANGESCommittee D16 has identified the locatio
17、n of selected changes to this standard since the last issue(D 7124 - 06) that may impact the use of this standard. (Approved June 1, 2007.)(1) Changed method entry for sulfur in 3.1.(2) Changed method entry for nitrogen in 3.1.ASTM International takes no position respecting the validity of any paten
18、t 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 standard is subject to revision a
19、t 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 International Headquarters. Your commen
20、ts 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 below.This standard is copyrighted
21、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).D7124072
