ASTM International - ASTM D5155-19
Standard Test Methods for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates
|Publication Date:||1 August 2019|
|ICS Code (Thermoplastic materials):||83.080.20|
significance And Use:
5.1 These test methods are to be used for research or for quality control to characterize isocyanates used in polyurethane products.
1.1 These test methods are used to measure the isocyanate content of aromatic isocyanates used as polyurethane raw materials.
1.1.1 Test Method A-Unheated toluene-dibutylamine
1.1.2 Test Method B-Heated toluene-dibutylamine
1.1.3 Test Method C-Unheated trichlorobenzene-tol
1.2 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: Method C of this test method is equivalent to Method B of ISO 14896.
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.