1、Designation: D5606 09Standard Specification forToluene for Toluene Diisocyanate (TDI) Feedstock1This standard is issued under the fixed designation D5606; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers toluene for toluene diisocyan-ate (TDI) feedstock.1.2 The following applies to all specified limits in this
3、specification: 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 Practice E29.1.3 Consult
4、 OSHA regulations and suppliers materialsafety data sheets for all materials used in this specification.1.4 The values stated in SI units are to be regarded asstandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D848 Test Method for Acid Wash C
5、olor of IndustrialAromatic HydrocarbonsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D2360 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas ChromatographyD3437 Practice for Sampling and Handling Liquid CyclicProductsD5386 Test Method for Color of Liqui
6、ds Using TristimulusColorimetryD6526 Test Method for Analysis of Toluene by CapillaryColumn Gas ChromatographyD7504 Test Method for Trace Impurities in MonocyclicAromatic Hydrocarbons by Gas Chromatography andEffective Carbon NumberE29 Practice for Using Significant Digits in Test Data toDetermine C
7、onformance with Specifications2.2 Other Document:OSHA Regulations, 29 CFR paragraphs 1910.1000 and1910.120033. Properties3.1 Toluene for TDI feedstock shall conform to the follow-ing requirements:Property Specification ASTM Test MethodPurity, min, wt % 99.9AD2360 or D6526 orD7504Acid wash color, max
8、 pass with 2 D848Benzene, max, mg/kg 300AD2360 or D6526 orD7504Nonaromatics, max, wt % 0.1AD2360 or D6526 orD7504Ethylbenzene, max, mg/kg 300AD2360 or D6526 orD7504Xylenes, max, mg/kg 500AD2360 or D6526 orD7504AppearanceB.Color, max, PtCo scale 10 D1209 or D5386_AIf more than one method is listed, t
9、he producer and user should agree on thereferee method.BClear liquid free of sediment and haze when observed at 18.3 to 25.6C (65 to78F).4. Sampling4.1 Sample the material in accordance with Practice D3437.5. Keywords5.1 impurities in toluene; toluene; toluene diisocyanatefeedstock1This specificatio
10、n 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, 2009. Published December 2009. Originallyapproved in
11、1994. Last previous edition approved in 2006 as D5606 01 (2006)1.DOI: 10.1520/D5606-09.2For 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 Summar
12、y 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, http:/www.access.gpo.gov.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbo
13、r 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(D5606 - 01 (2006)1) that may impact the use of this standard. (Approved December 1, 2009.)(1) Added method for c
14、omposition, Test Method D7504 inTable 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, an
15、d 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 five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revisi
16、on 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 technical committee, which you may attend. If you feel that your comments have not received a fair hearing you sh
17、ouldmake 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D5606 092
