Silwet L-7500 Surfactant Organosilicone Crompton-OSI Specialties Defoamers / Anti-Foaming Agents >> Silicone based Surfactants Surfactants >> Silicone based Silwet® L-7500 Surfactant Surfactant, specialty OSi Specialties Product Description: Non-aqueous compatible organosilicone surface tension reducing agent with wetting properties. In aqueous milieu shows strong defoaming properties. Non-aqueous compatible organosilicone. Used as a surface tension reducing agent. Provides wetting properties. Shows strong defoaming properties in aqueous milieu.