This is a chemical by chemcon specialty chemicals pvt ltd. Synonym of the hexamethyl disilane is hmd. It`s a flammable liquid and soluble in water and miscible in acetone. It`s a clear colorless liquid. Selflife of this liquid is approx 1yr.Density of this chemical is 0.715@27 degree c. Molecular formula of this chemical is [ch3]3sisi[ch3]3.