ASTM D5136-2007 Standard Specification for High Purity p-Xylene《高纯度对二甲苯的标准规范》.pdf

1、Designation: D 5136 07Standard Specification forHigh Purity p-Xylene1This standard is issued under the fixed designation D 5136; 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 ind

2、icates 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 high purity p-Xylene.1.2 The following applies to all specified limits in thisspecification: for purposes of determining conformance

3、 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 regarded as thestan

4、dard. 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:2D 850 Test Method for Distillation of Industrial Arom

5、aticHydrocarbons and Related MaterialsD 1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D 3437 Practice for Sampling and Handling Liquid CyclicProductsD 3798 Test Method for Analysis of p-Xylene by GasChromatographyD 5386 Test Method for Color of Liquids Using TristimulusColorimet

6、ryD 5917 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andExternal CalibrationD 7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceE29 Practice for Using Significant Digits in Test D

7、ata toDetermine Conformance with Specifications2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120033. Properties3.1 High purity p-Xylene shall conform to the followingrequirements:ASTMProperty Specification Test MethodAPurity,Bmin, weight % 99.7 D 3798 or D 5917m-Xylene, ma

8、x, weight % 0.20 D 3798 or D 5917o-Xylene, max, weight % 0.10 D 3798 or D 5917Sulfur, max, mg/kg 1.0 D 7183Toluene, max, weight % 0.10 D 3798 or D 5917Ethylbenzene, max, weight % 0.20 D 3798 or D 5917Nonaromatic hydrocarbons, max, weight % 0.20 D 3798 or D 5917AppearanceC.Color, max, Pt/Co scale 10

9、D 1209 or D 5386Distillation range, including the temperature138.3C at 101.3 kPa (760 mm Hg)pressure, max, C1.0 D 850AIf more than one method is listed, the producer and user should agree on thereferee method.BPurity, molar %, minimum, will be specified when the freeze point procedureunder developme

10、nt is completed.CClear 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 D 3437.5. Keywords5.1 p-Xylene1This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Rela

11、ted Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivativesCurrent edition approved June 1, 2007. Published July 2007. Originally approvedin 1990. Last previous edition approved in 2006 as D 5136 06.2For referenced ASTM standard

12、s, 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 Office Superintendent of Documents,732 N. Capitol

13、 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 States.SUMMARY OF CHANGESCommittee D16 has identified

14、 the location of selected changes to this standard since the last issue(D 5136 - 06) that may impact the use of this standard. (Approved June 1, 2007.)(1) Changed method entry for sulfur in 3.1.Committee D16 has identified the location of selected changes to this standard since the last issue(D 5136

15、 00 (2004) that may impact the use of this standard. (Approved October 1, 2006.)(1) The method for measuring sulfur was changed.(2) Several editorial changes have been made to conform tothe D16 Editorial Guidelines.ASTM International takes no position respecting the validity of any patent rights ass

16、erted 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 any time b

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18、ive 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 ASTM Inte

19、rnational, 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).D5136072