1,1,3,3,5,5,7,7-Octamethyltetrasiloxane

八甲基四硅氧烷

Also known as: Octamethyltetrasiloxane, 1,1,3,3,5,5,7,7-Octamethyltetrasiloxane, Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl-, Oxybis[(dimethylsilylene)oxy]bis(dimethylsilane), [[(dimethyl-λ3-silanyl)oxy-dimethylsilyl]oxy-dimethylsilyl]oxy-dimethylsilicon

1,1,3,3,5,5,7,7-Octamethyltetrasiloxane (CAS 1000-05-1) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H26O3Si4 and a molecular weight of 282.632 g/mol. It is also known as Octamethyltetrasiloxane, Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl- and Oxybis[(dimethylsilylene)oxy]bis(dimethylsilane). Key properties include a melting point of <0ºC, a boiling point of 205.1±23.0 °C at 760 mmHg, a density of 0.863 and a flash point of 77.8±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

1000-05-1

Jingsj CID

J-1378278-6

Molecular Formula

C₈H₂₆O₃Si₄

Chinese Name

八甲基四硅氧烷

Molecular Weight

282.632 g/mol

Category

Aliphatic Hydrocarbons

Last updated

8/21/2026