ASTM D5471 - 17 Standard Specification for O-Xylene 980.pdf

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1、Designation: D5471 17Standard Specification forO-Xylene 9801This standard is issued under the fixed designation D5471; 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 parentheses indicates the

2、 year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers a grade of o-xylene identifiedas ortho-Xylene 980.1.2 The following applies to all specified limits in thisspecification: for purposes of determ

3、ining 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 stated in SI units are to be rega

4、rded asstandard. No other units of measurement are included in thisstandard.1.4 Consult current OSHA regulations and suppliers SafetyData Sheets, and local regulations for all materials used in thisspecification.1.5 This international standard was developed in accor-dance with internationally recogn

5、ized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D850 Test Method for D

6、istillation of Industrial AromaticHydrocarbons and Related MaterialsD1492 Test Method for Bromine Index of Aromatic Hydro-carbons by Coulometric TitrationD3437 Practice for Sampling and Handling Liquid CyclicProductsD3797 Test Method for Analysis of o-Xylene by Gas Chro-matography (Withdrawn 2014)3D

7、5386 Test Method for Color of Liquids Using TristimulusColorimetryD5776 Test Method for Bromine Index of Aromatic Hydro-carbons by Electrometric TitrationD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberD8005 Test Method for Co

8、lor of Clear Liquids (Platinum-Cobalt Scale)E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE2680 Test Method for Appearance of Clear, TransparentLiquids (Visual Inspection Procedure)2.2 Other Document:4OSHA Regulations, 29 CFR Paragraphs 1910.1000 a

9、nd1910.12003. Properties3.1 O-Xylene 980 shall conform to the following require-ments:Property SpecificationASTM TestMethodAPurity, min, wt % 98.0 D3797 or D7504Nonaromatic hydrocarbons, max, wt % 0.5 D3797 or D7504p-Xylene plus m-Xylene, max, wt % 1.3 D3797 or D7504C9 and heavier aromatics, max, wt

10、 % 0.8 D3797 or D7504Cumene, wt %B0.5 D3797 or D7504Bromine index, max mg/100 g 100 D1492 or D5776Appearance, free of haze, particulatesor suspended matter particlespass E2680Color, Pt-Co scale, max 10 D5386 or D8005Distillation range, including the tempera-ture, 144.4C at 101.3 kPA (760 mmHg) press

11、ure, max, C2.0 D850AIf more than one method is listed for a property the producer and user shouldagree on the referee method.BCumene is a significant component in o-xylene as it may contribute to deflagra-tions in some processes under certain conditions.1This specification is under the jurisdiction

12、of ASTM Committee D16 onAromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-bility of Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane andTheir Derivatives.Current edition approved June 1, 2017. Published June 2017. Originallyapproved in 1993. Last previous

13、edition approved in 2016 as D5471 16. DOI:10.1520/D5471-17.2For 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.3T

14、he last approved version of this historical standard is referenced onwww.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.*A Summary of Changes section appears at the end of thi

15、s standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Keywords5.1 o-XyleneASTM International takes no position respecting the validity of any patent

16、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 at

17、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 comments

18、 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 by

19、 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 172