ASTM-D4660 2023

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D4660-23 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate

Published By	Publication Date	Number of Pages
ASTM	2023	6

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Categories: 83.040.30 - Auxiliary materials and additives for plastics, ASTM

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Description

ASTM D4660-23

Active Standard: Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate

ASTM D4660

Scope

1.1 These test methods measure the amount of toluene-2,6-diisocyanate (2,6-TDI) isomer or toluene–2,4–diisocyanate (2,4-TDI) isomer in mixtures of the 2,4- and 2,6-isomers of toluenediisocyanate (TDI). Two different test methods are provided to give accurate results over the broad range of isomer concentrations possible.

1.1.1 Test Method A—Applicable to TDI samples containing 5 to 95 % of 2,6-TDI isomer (5 to 95 % 2,4-TDI isomer).

1.1.2 Test Method B—Applicable to TDI samples containing 0 to 5 % of 2,6-TDI isomer (95 to 100 % 2,4-TDI isomer).

Note 1: These test methods are equivalent to ISO 15064.

1.2 The values stated in SI units are to be regarded as 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

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.

Keywords

FTIR; infrared; IR; isomer; polyurethane raw material; TDI; toluene diisocyanate;

ICS Code

ICS Number Code 83.040.30 (Auxiliary materials and additives for plastics)

DOI: 10.1520/D4660-23

Additional information

Standard Title	D4660-23 Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate
Published Code	ASTM
Publication Date	2023
Pages Count	6
ICS Codes	83.040.30 - Auxiliary materials and additives for plastics