Dodecyltrimethoxysilane
Also known as: n-Dodecyltrimethoxysilane, Lauryltrimethoxysilane, 1-Trimethoxysilyldodecane, Silane coupler WD-10, Dodecyl(trimethoxy)silane, Trimethoxy(dodecyl)silane
Dodecyltrimethoxysilane (CAS 3069-21-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H34O3Si and a molecular weight of 290.514 g/mol. Key properties include a melting point of -40°C, a boiling point of 234.9±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 108.6±21.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3069-21-4
- Jingsj CID
- J-18775-7
- Molecular Formula
- C15H34O3Si
- Molecular Weight
- 290.514 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -40°C |
|---|---|
| Boiling Point | 234.9±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 108.6±21.3 °C |
| Exact Mass | 290.227722 |
| PSA | 27.69000 |
| LogP | 5.98 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.430 |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Dodecyltrimethoxysilane?
The CAS number of Dodecyltrimethoxysilane is 3069-21-4.
What are the molecular formula and molecular weight of Dodecyltrimethoxysilane?
Dodecyltrimethoxysilane has molecular formula C15H34O3Si and molecular weight 290.514 g/mol.
What are the upstream and downstream products of Dodecyltrimethoxysilane?
For Dodecyltrimethoxysilane, Upstream Products: Potassium methoxide, Methanol, Dodecylmagnesium bromide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Dodecyltrimethoxysilane (CAS 3069-21-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18775-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.