PTSI full name is p-Toluenesulfonyl isocyanate. As a dehydrating agent of solvent, filler and pigment,PTSI is widely used in one component and traditional two-component polyurethane paint systems. In addition, PTSI can also be used as a stabilizer in diisocyanate to prevent its deterioration or discoloration.CAS: 4083-64-1; The package is 200kg/drum; 20kg/drum(white paint barrel);