methyloctadecyldiethoxysilane

甲基十八烷基二乙氧基硅烷

Also known as: N-OCTADECYLMETHYLDIETHOXYSILANE, DIETHOXYMETHYLOCTADECYLSILANE, Octadecylmethyldiethoxysilane, Diethoxy(methyl)octadecylsilane, n-Octadecylmethyldiethoxysilanen isomer, Silane, diethoxymethyloctadecyl-, METHYL-N-OCTADECYLDIETHOXYSILANE, MFCD00026674

methyloctadecyldiethoxysilane (CAS 67859-75-0) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C23H50O2Si and a molecular weight of 386.727 g/mol. It is also known as N-OCTADECYLMETHYLDIETHOXYSILANE, DIETHOXYMETHYLOCTADECYLSILANE and Octadecylmethyldiethoxysilane. Key properties include a melting point of 20ºC, a boiling point of 375.2±10.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 229.9±6.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 67859-75-0
Jingsj CID: J-1994140-8
Molecular Formula: C₂₃H₅₀O₂Si
Chinese Name: 甲基十八烷基二乙氧基硅烷
Molecular Weight: 386.727 g/mol
Category: Aliphatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	20ºC
Boiling Point	375.2±10.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	229.9±6.6 °C

Frequently Asked Questions

What is the CAS number of methyloctadecyldiethoxysilane?

The CAS number of methyloctadecyldiethoxysilane is 67859-75-0.

What are the molecular formula and molecular weight of methyloctadecyldiethoxysilane?

methyloctadecyldiethoxysilane has molecular formula C23H50O2Si and molecular weight 386.727 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "methyloctadecyldiethoxysilane (CAS 67859-75-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1994140-8 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.