1、Designation: D5211 09Standard 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. Scope*1.1 This specification covers xylenes for p-xylene feed-stock. These xylenes typically are extracted from reformate.1.2 The following applies to all specif
3、ied 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 Practi
4、ce 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 MaterialSafety Data Sheets (MSDS), and local regulations for allmaterials used in this specification.2. Referenced Documents
5、2.1 ASTM Standards:2D850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D3437 Practice for Sampling and Handling Liquid CyclicProductsD5194 Test Method for Trace Chloride in Liquid AromaticHydro
6、carbonsD5386 Test Method for Color of Liquids Using TristimulusColorimetryD5808 Test Method for Determining Chloride in AromaticHydrocarbons and Related Chemicals by Microcoulom-etryD6069 Test Method for Trace Nitrogen in Aromatic Hydro-carbons by Oxidative Combustion and Reduced PressureChemilumine
7、scence DetectionD6563 Test Method for Benzene, Toluene, Xylene (BTX)Concentrates Analysis by Gas ChromatographyD7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD7184 Test Method for Ultra Low Nitrogen in AromaticHydrocarbon
8、s by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Oth
9、er Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120031This 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 TheirDerivativ
10、es.Current edition approved Dec. 1, 2009. Published December 2009. Originallyapproved in 1991. Last previous edition approved in 2007 as D5211 07. DOI:10.1520/D5211-09.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
11、 Book of ASTMStandards volume information, refer to the standards Document Summary page onthe 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.1*A Summary of Changes section
12、 appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Properties3.1 Xylenes for p-xylene feedstock shall conform to thefollowing requirements:Property SpecificationASTMTestMethodp-xylene,Amin, weight
13、% 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 D6563 or D7504Nonaromatic hydrocarbons,max, weight %0.3 D6563 or D7504Nitrogen, max, mg/kg if needed D6069 or D7184Sulfur, max, mg/kg
14、1.0 D7183AppearanceB.Chloride if needed D5194 or D5808Color, max, Pt/Co scale 20 D1209 or D5386Distillation range, at 101.3 kPa(760 mm Hg) pressure,max, C5 D850Initial distillation temperature,min, C137 .Dry point, max, C 143 ._AThe p-xylene and ethylbenzene specifications represent the distribution
15、 ofthese components within the C8aromatics and not in the total sample.BClear liquid free of sediment and haze when observed at 18.3 to 25.6C (65 to78F).4. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Keywords5.1 feedstock;p-xylene; xylenesSUMMARY OF CHANGESCommittee
16、 D16 has identified the location of selected changes to this standard since the last issue (D5211 - 07)that may impact the use of this standard. (Approved December 1, 2009.)(1) Added method for composition, Test Method D7504 inTable in 3.1.ASTM International takes no position respecting the validity
17、 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 responsibility.This standard is subject
18、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 International Headquarters
19、. 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 shown below.This standard is
20、 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/).D5211 092
