1、Designation: D5471 10Standard Specification forO-Xylene 9801This standard is issued under the fixed designation D5471; 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 the
2、 year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a grade of o-xylene identifiedas ortho-Xylene 980.1.2 The following applies to all specified limits in thisspecification: for purposes of deter
3、mining 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 Practice E29.1.3 The values stated in SI units are to be reg
4、arded asstandard. No other units of measurement are included in thisstandard.1.4 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:2D850 Test Method for Distillation
5、 of Industrial AromaticHydrocarbons and Related MaterialsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D1492 Test Method for Bromine Index of Aromatic Hydro-carbons by Coulometric TitrationD3437 Practice for Sampling and Handling Liquid CyclicProductsD3797 Test Method for Analy
6、sis of o-Xylene by GasChromatographyD5386 Test Method for Color of Liquids Using TristimulusColorimetryD5776 Test Method for Bromine Index of Aromatic Hydro-carbons by Electrometric TitrationD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective
7、Carbon NumberE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Document:3OSHA Regulations, 29 CFR Paragraphs 1910.1000 and1910.12003. Properties3.1 O-Xylene 980 shall conform to the following require-ments:Property SpecificationASTM TestMetho
8、dAPurity, min, wt % 98.0 D3797 or D7504Nonaromatic hydrocarbons, max, wt % 0.5 D3797 or D7504p-Xylene plus m-Xylene, max, wt % 1.3 D3797 or D7504C9 and heavier aromatics, max, wt % 0.8 D3797 or D7504Cumene, wt %B0.5 D3797 or D7504Bromine index, max mg/100 g 100 D1492 or D5776AppearanceC.Color, Pt-Co
9、 scale, max 10 D1209 or D5386Distillation range, including the tempera-ture, 144.4C at 101.3 kPA (760 mmHg) pressure, max, C2.0 D850AIf more than one method is listed for a property the producer and user shouldagree on the referee method.BCumene is a significant component in o-xylene as it may contr
10、ibute todeflagrations in some processes under certain conditions.CClear liquid, free of sediment and haze when observed at 18.3 to 25.6C.4. Sampling4.1 The material shall be sampled in accordance withPractice D3437.5. Keywords5.1 o-Xylene1This specification is under the jurisdiction of ASTM Committe
11、e D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved Feb. 15, 2010. Published April 2010. Originallyapproved in 1993. Last previous edition approved in 2004 a
12、s D5471 041. DOI:10.1520/D5471-10.2For 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. Govern
13、ment 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 appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
14、9, United States.SUMMARY OF CHANGESCommittee D16 has identified the location of selected changes to this standard since the last issue(D5471 041) that may impact the use of this standard. (Approved February 15, 2010.)(1) Added method for composition, Test Method D7504 inTable in 3.1.ASTM Internation
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17、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 your views known to the ASTM Committee on Standards,
18、 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D5471 102
