1、Designation: D 7124 08Standard 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 () 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 thisspecific
3、ation: 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 st
4、ated 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 T
5、est 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 3437
6、 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 Metho
7、d 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 inAro
9、matic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD 7184 Test Method for Ultra Low Nitrogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionD 7375 Test Method for Trace Quantities of Water inAromatic Hydrocarbons and Their Mixtures by
10、 Coulom-etric Karl Fischer TitrationE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 1064 Test Method for Water in Organic Liquids byCoulometric Karl Fischer Titration2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120031Thi
11、s specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved Dec. 1, 2008. Published December 2008. Original
12、lyapproved in 2005. Last previous edition approved in 2007 as D 7124 07.2For 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 AS
13、TM website.3Available 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box
14、 C700, West Conshohocken, PA 19428-2959, United States.3. Properties3.1 Benzene for use with zeolite based catalysts shallconform to 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 47
15、35 orD 7011Toluene, max, weight% 0.05 D 4492Nonaromatic hydrocarbons, max,weight %0.15 D 4492Nitrogen, max, mg/kg 0.5 D 6069 orD 71841,4 Dioxane (if needed) D 4492Acid wash color, max (If needed) Pass with 1 D 848Bromine index, max (if needed) 10 D 1492 orD 5776Water (if needed) D 6304 orE 1064 orD
16、7375Chlorides, max, mg/kg 1 D 5194AppearanceB.Color, max, PtCo scale 15 D 1209 orD 5386AIf more than one method is listed for a property 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 s
17、ampled in accordance withPractice D 3437.5. Keywords5.1 benzene; purity; zeoliteSUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue(D 7124 - 07) that may impact the use of this standard. (Approved December 1, 2008.)(1) Added Test Meth
18、od D 7375 as an alternate method forwater.Committee D16 has identified the location 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 nitroge
19、n 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 patent rights, and the riskof infringement of such ri
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22、M 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).D7124082
