1,1,3,5,5-Pentaphenyl-1,3,5-trimethyltrisiloxane

1,1,3,5,5-五苯基-1,3,5-三甲基三硅氧烷

Also known as: 1,3,5-Trimethyl-1,1,3,5,5-pentaphenyltrisiloxane, Trisiloxane, 1,3,5-trimethyl-1,1,3,5,5-pentaphenyl-, Dow Corning 705, UNII-HE7ABK56N5, methyl-bis[[methyl(diphenyl)silyl]oxy]-phenylsilane, trimethyl pentaphenyl trisiloxane

1,1,3,5,5-Pentaphenyl-1,3,5-trimethyltrisiloxane (CAS 3390-61-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C33H34O2Si3 and a molecular weight of 546.878 g/mol. It is also known as 1,3,5-Trimethyl-1,1,3,5,5-pentaphenyltrisiloxane, Trisiloxane, 1,3,5-trimethyl-1,1,3,5,5-pentaphenyl- and Dow Corning 705. Key properties include a melting point of -25°C, a boiling point of 560.2±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 238.3±25.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3390-61-2

Jingsj CID

J-48154-2

Molecular Formula

C₃₃H₃₄O₂Si₃

Chinese Name

1,1,3,5,5-五苯基-1,3,5-三甲基三硅氧烷

Molecular Weight

546.878 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026