Methyltriethoxysilane
Also known as: Triethoxymethylsilane, MTES, Triethoxy(methyl)silane, Silane, triethoxymethyl-, A 162, CM9050, Dynasylan MTES, HD-120, Silquest A
Methyltriethoxysilane (CAS 2031-67-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H18O3Si and a molecular weight of 178.301 g/mol. Key properties include a melting point of <-40ºC, a boiling point of 144.5±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 23.9±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 2031-67-6
- Jingsj CID
- J-2829-1
- Molecular Formula
- C7H18O3Si
- Molecular Weight
- 178.301 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <-40ºC |
|---|---|
| Boiling Point | 144.5±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 23.9±0.0 °C |
| Exact Mass | 178.102524 |
| PSA | 27.69000 |
| LogP | 1.73 |
| Additional Property | >1 (vs air) |
| Vapor Pressure | 6.4±0.3 mmHg at 25°C |
| Refractive Index | 1.402 |
| Additional Property | INSOLUBLE |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
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 Methyltriethoxysilane?
The CAS number of Methyltriethoxysilane is 2031-67-6.
What are the molecular formula and molecular weight of Methyltriethoxysilane?
Methyltriethoxysilane has molecular formula C7H18O3Si and molecular weight 178.301 g/mol.
Is Methyltriethoxysilane hazardous?
Methyltriethoxysilane has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of Methyltriethoxysilane?
For Methyltriethoxysilane, Upstream Products: Tetraethyl orthosilicate, Diethoxymethylsilane, Allyl chloride; Downstream Products: Trifluoro(methyl)silane, Methyltri-n-propoxysilane, Chlorotriethoxysilane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyltriethoxysilane (CAS 2031-67-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2829-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.