1,3-diphenyl-1,1,3,3-tetrakis(dimethylsiloxy)disiloxane

3,5-双(二甲基硅氧基)-1,1,7,7-四甲基-3,5-二苯基四硅氧烷

Also known as: 3,5-Bis[(dimethylsilyl)oxy]-1,1,7,7-tetramethyl-3,5-diphenyltetrasiloxane, Benzene, 1,1'-[1,1,3,3-tetrakis[(dimethylsilyl)oxy]-1,3-disiloxanediyl]bis-, Tetrasiloxane, 3,5-bis((dimethylsilyl)oxy)-1,1,7,7-tetramethyl-3,5-diphenyl-, [[bis[(dimethyl-λ3-silanyl)oxy]-phenylsilyl]oxy-(dimethyl-λ3-silanyl)oxy-phenylsilyl]oxy-dimethylsilicon

1,3-diphenyl-1,1,3,3-tetrakis(dimethylsiloxy)disiloxane (CAS 66817-59-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H38O5Si6 and a molecular weight of 527.026 g/mol. It is also known as 3,5-Bis[(dimethylsilyl)oxy]-1,1,7,7-tetramethyl-3,5-diphenyltetrasiloxane, Benzene, 1,1'-[1,1,3,3-tetrakis[(dimethylsilyl)oxy]-1,3-disiloxanediyl]bis- and Tetrasiloxane, 3,5-bis((dimethylsilyl)oxy)-1,1,7,7-tetramethyl-3,5-diphenyl-. Key properties include a melting point of < 0ºC, a boiling point of 418.2±28.0 °C at 760 mmHg and a flash point of 206.7±24.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

66817-59-2

Jingsj CID

J-1099964-8

Molecular Formula

C₂₀H₃₈O₅Si₆

Chinese Name

3,5-双(二甲基硅氧基)-1,1,7,7-四甲基-3,5-二苯基四硅氧烷

Molecular Weight

527.026 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026