ASTM D7252 - 17 - Standard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates

ASTM D7252 - 17

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

Status : Current   Published : May 2017

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

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

1.4  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.




Standard NumberASTM D7252 - 17
TitleStandard Test Method for Polyurethane Raw Materials: Determination of Monomer and Isomers in Isocyanates
StatusCurrent
Publication Date01 May 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Chromatography, Diisocyanate, HPLC, Isocyanate, Isomers, Monomer, Polymeric MDI, Polyurethane raw materials, Pure MDI
ICS19.020
PublisherASTM
FormatA4
DeliveryYes
Pages5
File Size114 KB
Price£40.00


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