The Methyltris(trimethylsiloxy)silane with its cas register number is 17928-28-8. It also can be called as 1,1,1,3,5,5,5-Heptamethyl-3-(trimethylsiloxy)trisiloxane and the IUPAC name about this chemical is trimethyl-[methyl-bis(trimethylsilyloxy)silyl]oxysilane. This chemical insoluble in water and it is combustible.

Physical properties about Methyltris(trimethylsiloxy)silane are: (1)#H bond acceptors: 3; (2)Polar Surface Area: 27.69Ų; (3)Index of Refraction: 1.411; (4)Molar Refractivity: 88.48 cm³; (5)Molar Volume: 355.6 cm³; (6)Polarizability: 35.07x10^-24cm³; (7)Surface Tension: 17.3 dyne/cm; (8)Enthalpy of Vaporization: 45.3 kJ/mol; (9)Vapour Pressure: 0.0767 mmHg at 25°C

Preparation: this chemical can be prepared by dimethyl sulfoxide. This reaction also can produce HCl, 1,1,1,3,5,5,5-heptamethyl-3-vinyl-trisiloxane and C₂₄H₅₄O₇Si₈. This reaction will need reagent methyl(vinyl)dichlorosilane, hexamethyldisiloxane. The yield is about 74%.

Uses of Methyltris(trimethylsiloxy)silane: it can be used to produce tetramethylsilane in heating. It will need reagent Ga, I₂. The yield is about 90%.

When you are using this chemical, please be cautious about it as the following: This chemical is flammable and it is irritating to eyes, respiratory system and skin. When you are using it, wear suitable gloves and eye/face protection, also keep away from sources of ignition. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: C[Si](C)(C)O[Si](C)(O[Si](C)(C)C)O[Si](C)(C)C
(2)InChI: InChI=1S/C10H30O3Si4/c1-14(2,3)11-17(10,12-15(4,5)6)13-16(7,8)9/h1-10H3
(3)InChIKey: RGMZNZABJYWAEC-UHFFFAOYSA-N