p-Toluenesulfonyl Isocyanate CAS 4083-64-1

Introduction

p-Toluenesulfonyl isocyanate, abbreviated as TI or PTSI, is a colorless, transparent liquid monoisocyanate with a relative density of 1.27 g/cm³. As a commonly used dehydrating agent in the chemical industry, it reacts with water to form carbon dioxide and p-toluenesulfonamide. It is widely used in polyurethane coating systems for the dehydration of solvents, fillers, and pigments, helping to reduce yellowing and loss of gloss in the system.
p-Toluenesulfonyl isocyanate is highly reactive; contact with moisture causes rapid gas release, which can lead to container rupture. It must be stored in a sealed container in a dry environment and has a shelf life of at least six months. During handling, contact with water, alcohols, acids, and bases must be avoided.

p-Toluenesulfonyl isocyanate is a low-viscosity, colorless, and transparent liquid used as an intermediate in the synthesis of medicines or pesticides.

Technical Index

Package

200 kg/drum

Store in a sealed container in a ventilated, cool, and dry environment.