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ASTM D7252-22

Current Revision

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

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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 (methylene phenylisocyanate) (PMDI). (See Note 1.)

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

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Note 1: There is no known ISO equivalent to this standard.

1.4 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.


5.1 This test method is used for research or for quality control to characterize isocyanates used in polyurethane products.

SDO ASTM: ASTM International
Document Number D7252
Publication Date July 1, 2022
Language en - English
Page Count 6
Revision Level 22
Supercedes
Committee D20.22
Publish Date Document Id Type View
July 1, 2022 D7252-22 Revision
April 15, 2017 D7252-17 Revision
April 1, 2006 D7252-06 Revision
Sept. 1, 2011 D7252-06R11E01 Reaffirmation