3,5-Diphenyloctamethyltetrasiloxane

3,5-二苯基八甲基四硅氧烷

Also known as: 1,1,1,3,5,7,7,7-Octamethyl-3,5-diphenyltetrasiloxane, Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-3,5-diphenyl-, trimethyl-[methyl-(methyl-phenyl-trimethylsilyloxysilyl)oxy-phenylsilyl]oxysilane, Benzene, 1,1'-[1,3-dimethyl-1,3-bis[(trimethylsilyl)oxy]-1,3-disiloxanediyl]bis-

3,5-Diphenyloctamethyltetrasiloxane (CAS 13270-97-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H34O3Si4 and a molecular weight of 434.824 g/mol. It is also known as 1,1,1,3,5,7,7,7-Octamethyl-3,5-diphenyltetrasiloxane, Tetrasiloxane, 1,1,1,3,5,7,7,7-octamethyl-3,5-diphenyl- and trimethyl-[methyl-(methyl-phenyl-trimethylsilyloxysilyl)oxy-phenylsilyl]oxysilane. Key properties include a melting point of -40ºC, a boiling point of 389.3±25.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 164.6±23.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

13270-97-8

Jingsj CID

J-1101138-5

Molecular Formula

C₂₀H₃₄O₃Si₄

Chinese Name

3,5-二苯基八甲基四硅氧烷

Molecular Weight

434.824 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026