ASTM D5471-2004e1 Standard Specification for O-Xylene 980《O-二甲苯980的标准规范》.pdf

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1、Designation: D 5471 04e1Standard Specification forO-Xylene 9801This standard is issued under the fixed designation D 5471; 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

2、 the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTESection 3 editorially corrected in March 2005.1. Scope*1.1 This specification covers a grade of o-xylene identifiedas ortho-Xylene 980.1.2 The following applies to all spe

3、cified limits in thisspecification: for purposes of determining 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 Pra

4、ctice E29.1.3 Consult current OSHA regulations and suppliers Mate-rial Safety Data Sheets, and local regulations for all materialsused in this specification.2. Referenced Documents2.1 ASTM Standards:2D 850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD 1209 Te

5、st Method for Color of Clear Liquids (Platinum-Cobalt Scale)D 1492 Test Method for Bromine Index of Aromatic Hy-drocarbons by Coulometric TitrationD 3437 Practice for Sampling and Handling Cyclic Prod-uctsD 3797 Test Method for Analysis of o-Xylene by GasChromatographyD 5386 Test Method for Color of

6、 Liquids Using TristimulusColorimetryD 5776 Test Method for Bromine Index of Aromatic Hy-drocarbons by Electrometric TitrationE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Document:3OSHA Regulations 29 CFR, Paragraphs 1910.1000 and1910.12

7、003. Properties3.1 O-Xylene 980 shall conform to the following require-ments:Property SpecificationASTM TestMethodAPurity, min, wt % 98.0 D 3797Nonaromatic hydrocarbons, max, wt % 0.5 D 3797p-Xylene plus m-Xylene, max, wt % 1.3 D 3797C9 and heavier aromatics, max, wt % 0.8 D 3797Cumene, wt %B0.5 D 3

8、797Bromine index, max mg/100 g 100 D 1492 or D 5776AppearanceC.Color, Pt-Co scale, max 10 D 1209 or D 5386Distillation range, including the tempera-ture, 144.4C at 101.3 kPA (760 mmHg) pressure, max, C2.0 D 850AIf more than one method is listed for a property the producer and user shouldagree on the

9、 referee method.BCumene is a significant component in o-xylene as it may contribute todeflagrations in some processes under certain conditions.CClear liquid, free of sediment and haze when observed at 18.3 to 25.6C (65to 78F).4. Sampling4.1 The material shall be sampled in accordance withPractice D

10、3437.5. Keywords5.1 o-Xylene1This 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 TheirDerivatives.Current edition approved Dec. 1, 2004.

11、Published January 2005. Originallyapproved in 1993. Last previous edition approved in 2003 as D 5471 97 (2003).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 s

12、tandards 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 20401.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor

13、Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.SUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue(D 5471 97 (2003) that may impact the use of this standard.(1)Addition of the cumene specification, alternate metho

14、ds andnew footnotes in Table 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 that determination of the validity of any such patent rights, and the ris

15、kof 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 reapproved or withdrawn. Your comments are invited either for revision of thi

16、s 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 feel that your comments have not received a fair hearing you shouldmake

17、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).D547104e12