1、Designation: D7124 11Standard 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 MaterialSafety Data Sheets, and local regulations for all materials usedin this specification.2. Referenced Documents2.1 ASTM Standards:2D848 Test
5、 Method for Acid Wash Color of IndustrialAromatic HydrocarbonsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D1492 Test Method for Bromine Index of Aromatic Hydro-carbons by Coulometric TitrationD1685 Test Method for Traces of Thiophene in Benzene bySpectrophotometry3D3437 Pract
6、ice for Sampling and Handling Liquid CyclicProductsD4492 Test 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 Br
7、omine Index of Aromatic Hydro-carbons by Electrometric TitrationD6069 Test Method for Trace Nitrogen in Aromatic Hydro-carbons by Oxidative Combustion and Reduced PressureChemiluminescence DetectionD6304 Test Method for Determination of Water in Petro-leum Products, Lubricating Oils, and Additives b
8、y Coulo-metric Karl Fischer TitrationD7011 Test Method for Determination of Trace Thiophenein Refined Benzene by Gas Chromatography and SulfurSelective DetectionD7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD7184 Test Me
9、thod for Ultra Low Nitrogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionD7359 Test Method for Total Fluorine, Chlorine and Sulfurin Aromatic Hydrocarbons and Their Mixtures by Oxida-tive Pyrohydrolytic Combustion followed by Ion Chroma-tography Dete
10、ction (Combustion Ion Chromatography-CIC)D7375 Test Method for Trace Quantities of Water in Aro-matic Hydrocarbons and Their Mixtures by CoulometricKarl Fischer TitrationD7536 Test Method for Chlorine in Aromatics by Mono-chromatic Wavelength Dispersive X-ray FluorescenceSpectrometryE29 Practice for
11、 Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1064 Test Method for Water in Organic Liquids by Cou-lometric Karl Fischer Titration2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120041This specification is under the jurisdiction of ASTM C
12、ommittee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved July 1, 2011. Published July 2011. Originally approvedin 2005. Last previous edition approved in 2
13、010 as D7124 10. DOI: 10.1520/D7124-11.2For 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 ASTM website.3Withdrawn. The last a
14、pproved version of this historical standard is referencedon www.astm.org.4Available 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 standa
15、rd.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 the following requirements:Property SpecificationASTM TestMethodABenzene, min, weight % 99.8 D4492Sulfur,
16、 max, mg/kg 1.0 D7183Thiophene, max, mg/kg 0.6 D1685 orD4735 orD7011Toluene, max, weight % 0.05 D4492Nonaromatic hydrocarbons, max,weight %0.15 D4492Nitrogen, max, mg/kg 0.5 D6069 orD71841,4 Dioxane (if needed) D4492Acid wash color, max (If needed) Pass with 1 D848Bromine index, max (if needed) 10 D
17、1492 orD5776Water (if needed) D6304 orE1064 orD7375Chlorides, max, mg/kg 1 D7359 or D7536AppearanceB.Color, max, PtCo scale 15 D1209 orD5386AIf 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.
18、6C (65 to 78F).4. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Keywords5.1 benzene; purity; zeoliteSUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue (D7124 - 10)that may impact the use of this standa
19、rd. (Approved July 1, 2011.)(1) Deleted method for chloride D5194 in Table in 3.1 and 2.1.Committee D16 has identified the location of selected changes to this standard since the last issue (D7124 - 08)that may impact the use of this standard. (Approved August 15, 2010.)(1) Added methods for chlorid
20、e, D7359 and D7536 in Table in3.1.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 risko
21、f 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 either for revision of this
22、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 hearing you shouldmake yo
23、ur 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/).D7124 112
