PEL-SIL 1315 is an efficient isocyanate or polyol compatible, liquid surfactant especially designed for isocyanurate applications. In isocyanurate formulations, it will produce foam with excellent flowability under a variety of foaming conditions. Other applications include foam for low density appliances. Flame retardant transportation and construction foams, and high density water blown formulations. A good starting point would be 0.5 to 0.9% of PEL-SIL 1315 on the total weight of the reactants.