1、ASTM D4588 87 M 0759530 0036455 3 vJ4 3 4 0 )Designation:D 4588-87 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM if not listed In the current combined index,wil1 appear in the next edition.Standard Guide
2、 for Analysis of p-Xylene This standard is issued under the k e d designation D 4588;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number i n parentheses indicafes the year of last reapproval.A superscr
3、ipt epsilon(6)indicates an editorial change since the last revision or reapproval.1.Scope 1.1 This guide is intended to aid in the selection of suitable ASTM test methods for determining the chemical or physical characteristics of finished p-xylene.1.2 The methods compiled in this guide are generall
4、y applicable for the analysis of p-xylene of 98%or greater purity.1.3 This standard may involve hazardoirs materials,oper-ations,and equipment.This standard does not purport to address all o f the safety problems associated with its use.It is the responsibility o f the user o f this standard to esta
5、blish appropriate safety and health practices and determine the applicability o f regulatory limitations prior to use.For a specific hazard statement,see Section 4.2.Referenced Documents 2,l ASTM Standards:D 86 Method for Distillation of Petroleum Products D847 Test Method for Acidity of Benzene,Tol
6、uene,Xylenes,Solvent Naphthas,and Similar Industrial Aro-matic Hydrocarbons D848 Test Method for Acid Wash Color of Industrial Aromatic Hydrocarbons D 850 Method for Distillation of Industrial Aromatic Hydrocarbons and Related Materials D 1015 Test Method for Freezing Point of High-Purity Hydrocarbo
7、ns D 1016 Test Method for Purity of Hydrocarbons from Freezing Points D 1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D 1353 Test Method for Nonvolatile Matter in Volatile Solvents for Use in Paint,Varnish,Lacquer,and Re-lated Products D1492 Test Method for Bromine Index of Aroma
8、tic Hydrocarbons by Coulometric Titration D2360 Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography D 3437 Practice for Sampling and Handling Liquid Cyclic Products D3505 Test Method for Density or Relative Density of Pure Liquid Chemicals D3798 Method for Anal
9、ysis of p-Xylene by Gas Chro-matography D 3961 Test Method for Trace Quantities of Sulfur in Liquid Aromatic Hydrocarbons by Oxidative Micro-coulometry D 4045 Test Method for Sulfur in Petroleum Products by Hydrogenolysis and Rateometric Colorimetry3 D 4052 Test Method for Density and Relative Densi
10、ty of Liquids by Digital Density Mete?2.2 Other Documents:A237.10-197 1 Acceptable Concentration of Xylene(Di-rnethylbenene)OSHA Regulations,29 CFR,paragraphs 1910.1000 and 1910.12005 3.Significance and Use 3.1 This guide esfablishes a summary of test procedures to help standardize the analysis of p
11、-xylene.It is intended as an aid for setting specifications between producers and users of p-xylene and for use by laboratories supporting manufac-turing processes using p-xylene.3.2 The recommended test methods were selected,in part,on the basis of precision,bias,and ease of analysis.When applicabl
12、e,an alternative method is suggested.These alterna-tive methods should be used in the event that either equipment or reagents are not available to conduct the recommended test method.4.Hazards 4.1 Consult current OSHA regulations and suppliers Material Safety Data Sheets on handling materials listed
13、 in this guide.5.Test Methods 5.1 The material shall be sampled,and the properties enumerated in this guide can be determined in accordance with Table 1,6.Precision and Bias 6.1 Most ASTM standard methods have precision limits.Reference to the individual standards for precision state-ments is recomm
14、ended.This guide is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcom-mittee D16.OA on Benzene,Toluene,Xylenes,Cyclohexane,and Their Deriva-tives.York,NY 10018 Annual Book ofASTM Standards,Vol 05.03.Available from A
15、merican National Standards Institute,1430 Broadway,New Available from Superintendent of Documents,U.S.Government Printing Current edition approved May 29,1987.Published August 1987.Annual Book ofASTM Standards,Vol 06.03.Ofice.Washington,DC 20402.1 NOTICE:This standard has either been superseded and
16、replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.-ASTM D4588 87 B O759530 003b456 3 TABLE 1 Properties of p-Xylene property Test Method Reporting Units Sampling D 3437 Appearance visual inspection Relative density D 4052 D 3505 Density D4052 g/m3 D 3505 Color D 1209 P/Co scale Distribution range D 850 O C D 86 Freeze point D 1015 O C Purity by Freeze Point D1016 mde%Purity by GC D3798 wt%Nonaromatics D3798 wt%D 2360 Aromatic distributio
