rc catalyst 108 is a water-based rapid curing catalyst for the production of polyurethane foams. it is a clear, colorless liquid with a mild odor. the active ingredient in rc catalyst 108 is m-cresol sulfonic acid. physicochemical properties properties value cas number 108-39-4 molecular formula c8h8o3s molecular weight 182.20 g/mole density 1.20g/cm ³ flash point 100...