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 determines the toluene diisocyanate content, the amine equivalent and the isocyanate content of refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. Other isomers, if present, will be included in the determination. This test method is also applicable to other isocyanates of suitable reactivity and solubility.
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