ASTM-D4660 › Historical Revision Information
Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate
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Scope
1.1 These test methods measure the amount of toluene-2,6-diisocyanate (TDI) in mixtures of the 2,4- and 2,6-isomers. Two test methods are required to give accurate results over a broad range of isomer concentrations.
1.1.1 Test Method A -Applicable to TDI samples containing 5 to 95% 2,6-isomer.
1.1.2 Test Method B -Applicable to TDI samples containing 0 to 5% 2,6-isomer.
Note 1--There are no equivalent ISO standards.
1.2 This standard does not purport to address all of the safety concerns, 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 warning and precautionary statements see Note 3.
Keywords
FTIR; infrared; IR; isomer; polyurethane raw material; TDI; toluene diisocyanate; ICS Number Code 83.040.30 (Auxiliary materials and additives for plast)
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08.02 (Plastics (II): D3222 - D5083)
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Document Number
ASTM-D4660-90
Revision Level
1990 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Dec. 28, 1990
Document Type
Test Method
Page Count
4 pages
Committee Number
D20.22