COMPARISON TITRIMETRIC AND POTENTIOMETRIC MEASUREMENTS RESULTS OF THE ISOCYANATE GROUPS MASS FRACTION
The isocyanate groups mass fraction determination as an important criteria of arylisocyanates and polyisocyanates quality was investigated by the potentiometric titration and titration methods in the presence of an Bromphenol blue. Analyses of 2,4-toluylendiisocyanate samples with different content of isocyanate groups were carried out using these methods. Comparative analysis of the obtained results is presented. The choice of a measurement method for use in industrial laboratories was justified.