product overview scl-off 4000 is a platinum catalyst used to accelerate the curing of silicone release coatings. it is a clear, straw-colored liquid with a viscosity of 400 cst at 25°c. the scl-off 4000 is compatible with all scl-off brands of solvent-based and solvent-free release agents as well as platinum-cured silicone psa. physical and chemical...