it  is a fast curing water-based catalyst for the production of polyurethane foams. it is a clear, colorless liquid with a mild odor. the active ingredient in rc catalyst 106 is p-toluenesulfonic acid. physicochemical properties properties value cas number 100-38-3 molecular formula c7h8o3s molecular weight 172.17 g/mole density 1.20g/cm ³ flash point 100 ℃ solubility...