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ASTM D4661-98

Historical Revision

Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates

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1.1 These test methods determine the total chlorine content of the mixed isomers of toluene diisocyanate (TDI). The difference between the total chlorine content and the hydrolyzable chlorine content (see Test Method D4663) is a measure of the amount of o-dichlorobenzene and other ring-substituted chlorinated products that are present. Both procedures are applicable to a variety of organic compounds but the amount of sample used may have to be varied. (See Note 1.)

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements, see Notes 2, 4, 5, 6, 10, and Section 12.1.

Note 1-There is no equivalent ISO standard.

SDO ASTM: ASTM International
Document Number D4661
Publication Date July 10, 1998
Language en - English
Page Count 4
Revision Level 98
Supercedes
Committee D20.22
Publish Date Document Id Type View
March 1, 2023 D4661-23 Revision
Aug. 1, 2018 D4661-18 Revision
Nov. 1, 2013 D4661-13 Revision
Feb. 1, 2009 D4661-09 Revision
Nov. 1, 2003 D4661-03 Revision
July 10, 1998 D4661-98 Revision