Titration of Isocyanate (NSO) Content

Analysis outlining the method for determining isocyanate (NSO) content. This method is applicable for material containing reactive isocyanate groups. The isocyanate is reacted with di-n-butyl amine to form a urea. Unreacted (excess) amine is determined by back titration with hydrochloric acid using the TitroLine 7000 Advanced Titrator, or TitroLine 7750 Multi Parameter Titrator. Note: We recommend ready to use HCl titrant.

Titration of Isocyanate (NSO) Content

Download PDF