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ASTM D7252

Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates

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Organization: ASTM
Publication Date: 1 April 2006
Status: inactive
Page Count: 5
ICS Code (Raw materials for rubber and plastics in general): 83.040.01
scope:

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-bis- (4-phenylisocyanate) (MDI) and polymethylene polyphenylisocyanates (PMDI). (See Note 1.)

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.

Document History

April 15, 2017
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
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...
April 1, 2006
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
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...
ASTM D7252
April 1, 2006
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
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-bis- (4-phenylisocyanate) (MDI)...

References

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