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ASTM D1786-21

Current Revision

Standard Specification for Toluene Diisocyanate

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1.1 This specification covers toluene diisocyanate used as an ingredient in the production of polyurethane materials.

Note 1: The properties included in this specification are those required to characterize toluene diisocyanate. Other requirements are possible and will be added as the necessary test methods become available.

1.2 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 2: There is no known ISO equivalent to this standard.

1.3 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.


This specification covers toluene diisocyanate used as an ingredient in the production of polyurethane cellular materials. The three classes of toluene diisocyanate covered in this specification are based on isomer ratio, and the three types are based on acidity and hydrolyzable chloride. Materials shall be tested and the individual grades shall conform to specified values of isomer ratio, purity, APHA color, and total chlorine.


SDO ASTM: ASTM International
Document Number D1786
Publication Date July 1, 2021
Language en - English
Page Count 2
Revision Level 21
Supercedes
Committee D20.22
Publish Date Document Id Type View
July 1, 2021 D1786-21 Revision
April 1, 2016 D1786-16 Revision
Jan. 15, 2010 D1786-10 Revision
Nov. 10, 2001 D1786-96 Revision
Nov. 10, 2001 D1786-01 Revision
March 15, 2006 D1786-01R06E01 Reaffirmation