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ASTM D 7252 : 2017 : REDLINE

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
Available format(s)

PDF

Superseded date

07-29-2022

Language(s)

English

Published date

05-18-2017

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 08.03, 2017 Describes the percent by weight of monomeric isomers and total monomer in crude or modified isocyanates.

1.1This 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.)

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

1.3This 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.

1.4This 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.

Committee
D 20
DocumentType
Redline
Pages
5
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

ASTM E 682 : 1992 Standard Practice for Liquid Chromatography Terms and Relationships

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