Methoxy(dimethyl)octadecylsilane

十八烷基二甲基甲氧基硅烷

Also known as: Dimethylmethoxyoctadecylsilane, Dimethyloctadecylmethoxysilane, EINECS 276-039-4, MFCD00042920, Methoxydimethyloctadecylsilane, Octadecyldimethylmethoxysilane, Silane, methoxydimethyloctadecyl-, Silane,methoxydimethyloctadecyl, methoxy-dimethyl-octadecylsilane, n-Octadecyl Dimethyl Methoxysilane, N-OCTADECYLDIMETHYLMETHOXYSILANE, Octadecylmethoxydimethylsilane

Methoxy(dimethyl)octadecylsilane (CAS 71808-65-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C21H46OSi and a molecular weight of 342.675 g/mol. It is also known as Dimethylmethoxyoctadecylsilane, Dimethyloctadecylmethoxysilane and EINECS 276-039-4. Key properties include a boiling point of 387.1±10.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 197.9±8.5 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

71808-65-6

Jingsj CID

J-1994148-6

Molecular Formula

C₂₁H₄₆OSi

Chinese Name

十八烷基二甲基甲氧基硅烷

Molecular Weight

342.675 g/mol

Category

Aliphatic Hydrocarbons

Last updated

8/21/2026