This siloxane, also known as bis(dimethylsilyl) ether, presents as a colorless to almost colorless liquid. It is known to be insoluble in water. Store in a cool, dark and well-ventilated place at ambient temperatures, under inert gas and protected from moisture. 1,1,3,3-tetramethyldisiloxane is incompatible with oxidizing agents, acids, bases, water and metals. This chemical causes skin irritation, serious eye irritation and is highly flammable in liquid and vapor form.