ASTM D5211-17 Standard Specification for Xylenes for p-Xylene Feedstock.pdf

1、Designation: D5211 17Standard Specification forXylenes for p-Xylene Feedstock1This standard is issued under the fixed designation D5211; 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 parenth

2、eses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers xylenes for p-xylene feed-stock. These xylenes typically are extracted from reformate.1.2 The following applies to all specifi

3、ed limits in thisspecification: for purposes of determining conformance withthis specification, an observed value or 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 Practic

4、e E29.1.3 The values stated in SI units are to be regarded asstandard. The values given in parentheses are for informationonly.1.4 Consult current OSHA regulations, suppliers SafetyData Sheets (SDS), and local regulations for all materials usedin this specification.1.5 This international standard wa

5、s developed in accor-dance with internationally recognized 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. Referenc

6、ed Documents2.1 ASTM Standards:2D850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD3437 Practice for Sampling and Handling Liquid CyclicProductsD5194 Test Method for Trace Chloride in Liquid AromaticHydrocarbonsD5386 Test Method for Color of Liquids Using Tris

7、timulusColorimetryD5808 Test Method for Determining Chloride in AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD6563 Test Method for Benzene, Toluene, Xylene (BTX)Concentrates Analysis by Gas ChromatographyD7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and

8、 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 Hydrocarbons and Their Mixtures by Oxida-tive Py

9、rohydrolytic Combustion followed by Ion Chroma-tography Detection (Combustion Ion Chromatography-CIC)D7457 Test Method for Determining Chloride in AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatogr

10、aphy andEffective Carbon NumberD7536 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 Spe

11、cificationsE2680 Test Method for Appearance of Clear, TransparentLiquids (Visual Inspection Procedure)2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120033. Properties3.1 Xylenes for p-xylene feedstock shall conform to thefollowing requirements:1This specification is under

12、the jurisdiction 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 199

13、1. Last previous edition approved in 2016 as D5211 16. DOI:10.1520/D5211-17.2For 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 onth

14、e ASTM 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO B

15、ox C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by

16、the World Trade Organization Technical Barriers to Trade (TBT) Committee.1Property SpecificationASTMTestMethodp-xylene,Amin, weight % 18 D6563 or D7504Ethylbenzene,Amax, weight % 20 D6563 or D7504Toluene, max, weight % 0.5 D6563 or D7504C9 and higher boiling aromatichydrocarbons, max, weight %1.0 D6

17、563 or D7504Nonaromatic hydrocarbons,max, weight %0.3 D6563 or D7504Sulfur, max, mg/kg 1.0 D7183Appearance, free of haze,particulates or suspendedmatter particlespass E2680Color, max, Pt/Co scale 20 D5386 or D8005Distillation range, at 101.3 kPa(760 mm Hg) pressure,max, C5 D850Initial distillation t

18、emperature,min, C137 .Dry point, max, C 143 .AThe p-xylene and ethylbenzene specifications represent the weight percentageof these components within the C8aromatics and not in the total sample.4. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Calculation5.1 Calculate t

19、he weight percent relative distribution of eachC8aromatic hydrocarbon in the total C8aromatic hydrocarbonfraction as follows:Fi5Wi(Wi3100% (1)where:Fi= weight fraction of C8aromatic component i in the totalC8aromatic hydrocarbon fraction,Wi= weight fraction of C8aromatic component i reportedby the m

20、ethod given in Table in 3.1, andi = components: ethylbenzene, para-xylene, meta-xylene,and ortho-xylene.6. Supplementary Requirements (Non-mandatory)6.1 The following supplementary requirements shall applywhen agreed upon by the supplier and purchaser:Property ASTM Test MethodsANitrogen, max, mg/kg

21、D7184Chloride D5194 or D5808 or D7359 orD7457 or D7536AIf more than one method is listed, the producer and user should agree on thereferee method.7. Keywords7.1 feedstock; p-xylene; xylenesASTM International takes no position respecting the validity of any patent rights asserted in connection with a

22、ny 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 any time by the responsible technica

23、l 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 will receive careful consideration

24、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 ASTM International, 100 Barr Harbor

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