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

ASTM-D7252 - 2017 EDITION - CURRENT
Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

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

Price:

$50.00        


Want this as a site license?

Changes from the previous issue

A redline edition is available for this document, with all changes visible. Ask Document Center Inc. for more information.

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 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.

Significance and Use

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

Keywords

chromatography; diisocyanate; HPLC; isocyanate; isomers; monomer; polymeric MDI; polyurethane raw materials; pure MDI;; ICS Number Code 19.020 (Test conditions and procedures in general); 83.040.01 (Raw materials for rubber and plastics in general); 83.100 (Cellular materials)

To find similar documents by ASTM Volume:

08.03 (Plastics (III): D5117 - latest; Reinforced Plastic Piping Systems and Chemical Equipment; Plastic Building Products)

To find similar documents by classification:

19.020 (Test conditions and procedures in general)

83.040.01 (Raw materials for rubber and plastics in general)

83.100 (Cellular materials)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number

ASTM-D7252-17

Revision Level

2017 EDITION

Status

Current

Modification Type

Revision

Publication Date

May 15, 2017

Document Type

Test Method

Page Count

5 pages

Committee Number

D20.22