What is Hexamethyl Disiloxane?

        Hexamethyl disiloxane is a organosilicon compound with the formula O[Si(CH3)3]2. This volatile liquid is used as a solvent and as a reagent in organic synthesis. It is prepared by the hydrolysis of trimethylsilyl chloride. The molecule is the protypical silyl ether and resembles a subunit of polydimethylsiloxane.