1、Designation: D7124 16Standard Specification forBenzene for Use with Zeolite Based Catalysts1This standard is issued under the fixed designation D7124; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A num
2、ber 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 thisspecificat
3、ion: 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 stat
4、ed in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4 Consult current OSHA regulations, suppliers SafetyData Sheets, and local regulations for all materials used in thisspecification.2. Referenced Documents2.1 ASTM Standards:2D848 Test Method f
5、or Acid Wash Color of Industrial Aro-matic HydrocarbonsD1492 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Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry (Withdrawn 2009)3D3437 Practice for Sampling and Handling Liquid CyclicProductsD4492 T
6、est 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 Electrometric Tit
7、rationD6304 Test Method for Determination of Water in Petro-leum Products, Lubricating Oils, and Additives by Cou-lometric Karl Fischer TitrationD7011 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas Chromatography and SulfurSelective DetectionD7183 Test Method for Determina
8、tion 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 Chemiluminescence DetectionD7359 Test Method for Total Fluorine, Chlorine and Sulfurin Aromatic
9、Hydrocarbons and Their Mixtures by Oxida-tive Pyrohydrolytic Combustion followed by Ion Chroma-tography Detection (Combustion Ion Chromatography-CIC)D7360 Test Method for Analysis of Benzene by Gas Chro-matography with External CalibrationD7375 Test Method for Trace Quantities of Water in Aro-matic
10、Hydrocarbons and Their Mixtures by CoulometricKarl Fischer TitrationD7457 Test Method for Determining Chloride in AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberD7
11、536 Test Method for Chlorine in Aromatics by Mono-chromatic Wavelength Dispersive X-ray FluorescenceSpectrometryD8005 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1064 Test Method for
12、Water in Organic Liquids by Coulo-metric Karl Fischer Titration1This 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.Curre
13、nt edition approved June 1, 2016. Published July 2016. Originally approvedin 2005. Last previous edition approved in 2012 as D7124 12. DOI: 10.1520/D7124-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of AS
14、TMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO
15、 Box C700, West Conshohocken, PA 19428-2959. United States12.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120043. Properties3.1 Benzene for use with zeolite based catalysts shallconform to the following requirements:Property SpecificationASTM TestMethodABenzene, min, weight
16、 % 99.8 D4492 or D7360 or D7504Sulfur, max, mg/kg 1.0 D7183Thiophene, max, mg/kg 0.6 D1685 or D4735 orD7011Toluene, max, weight % 0.05 D4492 or D7360 or D7504Nonaromatic hydrocarbons, max,weight %0.15 D4492 or D7360 or D7504Nitrogen, max, mg/kg 0.5 D7184Chlorides, max, mg/kg 1 D7359 or D7457 or D753
17、6AppearanceB.Color, max, PtCo scale 15 D5386 or D8005AIf 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).3.2 See Section 5.1 for non-mandatory supplementary re-quirements.4. Sam
18、pling4.1 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 MethodA1,4 Dioxane D4492 or D7360 orD7504Acid wash color, max
19、 D848Bromine index, max D1492 or D5776Water D6304 or E1064 or D7375AIf more than one method is listed, the producer and user should agree on thereferee method.6. Keywords6.1 benzene; purity; zeoliteSUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since
20、 the last issue (D712412)that may impact the use of this standard. (Approved June 1, 2016.)(1) Removed D1209 and added D8005 in Section 2.(2) Modified table in 3.1 to replace D1209 with D8005.(3) Removed D6069 from Section 2.(4) Modified table in 3.1 to remove D6069.ASTM International takes no posit
21、ion 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 rights, are entirely their own responsibilit
22、y.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 either for revision of this standard or for additional standardsand should be addressed to ASTM
23、 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 hearing you shouldmake your views known to the ASTM Committee on Standards, at the address s
24、hown 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), 610-8
25、32-9555 (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:/ 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.D7124 162
