1、Designation: D 5211 07Standard Specification forXylenes for p-Xylene Feedstock1This standard is issued under the fixed designation D 5211; 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 paren
2、theses indicates the year of last reapproval. Asuperscript epsilon (e) 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 spe
3、cified 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 Pra
4、ctice E29.1.3 The values stated 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 (MSDS), and local regulations for allmaterials used in this specification.2. Referenced Do
5、cuments2.1 ASTM Standards:2D 850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD 1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D 3437 Practice for Sampling and Handling Liquid CyclicProductsD 5194 Test Method for Trace Chloride in Liquid Ar
6、omaticHydrocarbonsD 5386 Test Method for Color of Liquids Using TristimulusColorimetryD 5808 Test Method for Determining Organic Chloride inAromatic Hydrocarbons and Related Chemicals by Micro-coulometryD 6069 Test Method for Trace Nitrogen in Aromatic Hy-drocarbons by Oxidative Combustion and Reduc
7、ed Pres-sure Chemiluminescence DetectionD 6563 Test Method for Benzene, Toluene, Xylene (BTX)Concentrates Analysis by Gas ChromatographyD 7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD 7184 Test Method for Ultra Low Nitr
8、ogen in AromaticHydrocarbons by Oxidative Combustion and ReducedPressure Chemiluminescence DetectionE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120033. Properties3.1 Xylenes
9、 for p-xylene feedstock shall conform to thefollowing requirements:ASTMTestProperty Specification Methodp-xylene,Amin, weight % 18 D 6563Ethylbenzene,Amax, weight % 20 D 6563Toluene, max, weight % 0.5 D 6563C9 and higher boiling aromatic hydro-carbons, max, weight %1.0 D 6563Nonaromatic hydrocarbons
10、, max,weight %0.3 D 6563Nitrogen, max, mg/kg if needed D 6069 orD 7184Sulfur, max, mg/kg 1.0 D 7183AppearanceB.Chloride if needed D 5194 orD 5808Color, max, Pt/Co scale 20 D 1209 orD 5386Distillation range, at 101.3 kPa (760mm Hg) pressure, max, C5 D 850Initial distillation temperature, min,C137 .Dr
11、y point, max, C 143 ._AThe p-xylene and ethylbenzene specifications represent the distribution 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).1This specification is under the jurisdiction of ASTM
12、 Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved June 1, 2007. Published July 2007. Originally approvedin 1991. Last previous edition approved in
13、 2006 as D 5211 06.2For 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.3Available from U.S. Government Printing O
14、ffice 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 standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United State
15、s.4. Sampling4.1 The material shall be sampled in accordance withPractice D 3437.5. Keywords5.1 feedstock; p-xylene; xylenesSUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue(D 5211 - 06) that may impact the use of this standard. (Ap
16、proved June 1, 2007.)(1) Changed method entry for sulfur in 3.1.(2) Changed method entry for nitrogen in 3.1.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
17、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 technical committee and must be reviewed every five years andif not revised, either reap
18、proved 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 at a meeting of theresponsible technical committee, which you may attend. If you
19、 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 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).D5211072
