BYK 1690 SD is a versatile, solid additive based on hydrocarbons for bound systems. It is VOC-free and silicone-free. BYK 1690 SD shows consistent and good defoaming effect even at low dosages over a long period of time. It ensures optimum surface characteristics of the end product. BYK 1690 SD is highly compatible in various mineral binder systems. It disperses very easily in water. BYK 1690 SD provides benefits like defoaming without affecting the physical properties. It can be used in applications where long lasting defoaming is required.