1、Designation: D 843 06Standard Specification forNitration Grade Xylene1This standard is issued under the fixed designation D 843; 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 nitration grade xylene.1.2 The following applies to all specified limits in thisstandard: for purposes of determining conformance wi
3、th thisstandard, an observed value or a calculated value shall beround off “to the nearest unit” in the last right-hand digit usedin expressing the specification limit, in accordance with theround-off method of Practice E29.1.3 The values stated in SI units are to be regarded as thestandard. The val
4、ues given in parentheses are for informationonly.1.4 Consult OSHA regulations, suppliers Material SafetyData Sheets, and local regulations for all materials used in thisspecification.2. Referenced Documents2.1 ASTM Standards:2D 848 Test Method for Acid Wash Color of IndustrialAromatic HydrocarbonsD
5、849 Test Method for Copper Strip Corrosion by IndustrialAromatic HydrocarbonsD 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 CyclicProducts
6、D 5386 Test Method for Color of Liquids Using TristimulusColorimetryD 6563 Test Method for Benzene, Toluene, Xylene (BTX)Concentrates Analysis by Gas ChromatographyE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Document:OSHA Regulations 29
7、 CFR, paragraphs 1910.1000 and1910.120033. Properties3.1 Nitration grade xylene shall conform to the followingrequirements:ASTM TestProperty Specification MethodANonaromatic hydrocarbons, max, volume % 4.0 D 6563Acid wash color, max pass with 6 D 848Copper corrosion pass (1A or 1B) D 849AppearanceB.
8、Color, Pt/Co scale, max 20 D 1209 orD 5386Distillation range at 101.3 kPa (760 mm Hgpressure), max, C5 D 850Initial distillation temperature, min, C 137 D 850Dry point, max, C 143 D 850AIf more than one method is listed, the producer and user should agree on thereferee method.BClear liquid free of s
9、ediment 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 xylene1This specification is under the jurisdiction of ASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsib
10、ility ofSubcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane and TheirDerivatives.Current edition approved June 1, 2006. Published June 2006. Originallyapproved in 1945. Last previous edition approved in 2006 as D 843 97 (2006).2For referenced ASTM standards, visit the ASTM website, www.ast
11、m.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 St., NW, Mail Stop: SDE, Washingt
12、on, DC 20401.1*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 the location of selected changes to this standard since the
13、 last issue(D 843 97 (2006) that may impact the use of this standard. (Approved June 1, 2006.)(1) Changed methods for nonaromatic hydrocarbons in 3.1.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. User
14、s 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 by the responsible technical committee and must be reviewed every
15、five years andif not revised, either reapproved 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 technica
16、l 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 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).D843062
