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Significance and Use
This test method can be used for research or for quality control to characterize isocyanates used in polyurethane products.
1.1 This test method determines the percent by weight of monomeric isomers and total monomer in crude or modified isocyanates. The test method is applicable to methylene di(phenylisocyanate) (MDI) and polymeric (meththylene phenylisocyanate) (PMDI). (See Note 1.)
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.
Note 1—There is no known ISO equivalent to this standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D883 Terminology Relating to Plastics
E682 Practice for Liquid Chromatography Terms and Relationships
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 19.020 (Test conditions and procedures in general); 83.040.01 (Raw materials for rubber and plastics in general); 83.100 (Cellular materials)
UNSPSC Code 12352100(Organic derivatives and substituted compounds)