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) or toluene-2,4-diisocyanate 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 AApplicable to TDI samples containing 5 to 95 % 2,6-isomer (95 to 5 % 2,4-isomer).
1.1.2 Test Method BApplicable to TDI samples containing 0 to 5 % 2,6-isomer (95 to 100 % 2,4-isomer). These test methods are equivalent to ISO 15064.
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.
Significance and Use
These test methods can be used for research or for quality control to determine the isomer ratios of toluene diisocyanates.
The isomer ratio of a toluene diisocyanate relates to its reactivity.
Keywords
FTIR; infrared; IR; isomer; polyurethane raw material; TDI; toluene diisocyanate; ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics)
To find similar documents by ASTM Volume:
08.02 (Plastics (II): D3222 - D5083)
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Document Number
ASTM-D4660-06
Revision Level
2006 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Sept. 1, 2006
Document Type
Test Method
Page Count
6 pages
Committee Number
D20.22