PEL-SIL 9868 is a silicone surfactant that is polyol compatible and especially designed for compatibility with pentane. It is useful in appliance insulation formulations and laminated continuous rigid board foam. PEL-SIL 9868 is designed to maximize the k-factor in initial and long term aging in pentane blown foam. With the above blowing agent it will produce foam with excellent flow characteristics, a high percent of closed cells and improved compressive properties.