ASTM D7252-06
Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates

Standard No.

ASTM D7252-06

Release Date

2006

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7252-06(2011)e1

Latest

ASTM D7252-22

Scope

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-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.

ASTM D7252-06 Referenced Document

• ASTM D883 Standard Terminology Relating to Plastics
• ASTM E682 Standard Practice for Liquid Chromatography Terms and Relationships
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D7252-06 history

• 2022 ASTM D7252-22 Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
• 2017 ASTM D7252-17 Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
• 2006 ASTM D7252-06(2011)e1 Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
• 2006 ASTM D7252-06 Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates