Phenyltris(dimethylsiloxy)silane

Q: What are the molecular formula and molecular weight of Phenyltris(dimethylsiloxy)silane?

C12H26O3Si4, molecular weight 330.675 g/mol

苯基三(二甲基硅氧烷基)硅烷

Also known as: Tris(dimethylsiloxy)phenylsilane, Tris(dimethylsilyloxy)phenylsilane, 3-(Dimethylsilyloxy)-1,1,5,5-tetramethyl-3-phenyltrisiloxane, 3-[(Dimethylsilyl)oxy]-1,1,5,5-tetramethyl-3-phenyltrisiloxane, Benzene, [1,1-bis[(dimethylsilyl)oxy]-3,3-dimethyldisiloxanyl]-, Phenyl-tri(dimethylsiloxy)silane, 3-[(dimethylsilyl)oxy]-1,1,5,5-tetramethyl-3-phenyl-Trisiloxane

CAS No.: 18027-45-7
Jingsj CID: J-41005-0
Molecular Formula: C₁₂H₂₆O₃Si₄
Chinese Name: 苯基三(二甲基硅氧烷基)硅烷
Molecular Weight: 330.675 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	<0ºC
Boiling Point	275.9±23.0 °C at 760 mmHg
Density	0.942 g/mL at 25 °C(lit.)
Flash Point	120.7±22.6 °C

Frequently Asked Questions

What is the CAS number of Phenyltris(dimethylsiloxy)silane?

18027-45-7

What are the molecular formula and molecular weight of Phenyltris(dimethylsiloxy)silane?

C12H26O3Si4, molecular weight 330.675 g/mol

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026