ASTM D7252

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

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Organization: ASTM
Publication Date: 15 April 2017
Status: active
Page Count: 5
ICS Code (Test conditions and procedures in general): 19.020
ICS Code (Raw materials for rubber and plastics in general): 83.040.01
ICS Code (Cellular materials): 83.100
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 di(phenylisocyanate) (MDI) and polymeric (methylene phenylisocyanate) (PMDI). (See Note 1.)

Units-The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM D7252
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...
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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