Isobutyltrimethoxysilane
Also known as: Trimethoxy(2-methylpropyl)silane, Dynasylan IBTMO, CI7810, Prosil R 178, Silane, trimethoxy(2-methylpropyl)-, i-butyltrimethoxysilane, iso-Butyltrimethoxysilan
Isobutyltrimethoxysilane (CAS 18395-30-7) 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 <0ºC, a boiling point of 154.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 43.9±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H336 — May cause drowsiness or dizziness. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 18395-30-7
- Jingsj CID
- J-40957-4
- 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 | <0ºC |
|---|---|
| Boiling Point | 154.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 43.9±0.0 °C |
| Exact Mass | 178.102524 |
| PSA | 27.69000 |
| LogP | 1.55 |
| Vapor Pressure | 4.2±0.2 mmHg at 25°C |
| Refractive Index | 1.401 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H315 — Causes skin irritation
- H336 — May cause drowsiness or dizziness
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 Isobutyltrimethoxysilane?
The CAS number of Isobutyltrimethoxysilane is 18395-30-7.
What are the molecular formula and molecular weight of Isobutyltrimethoxysilane?
Isobutyltrimethoxysilane has molecular formula C7H18O3Si and molecular weight 178.301 g/mol.
Is Isobutyltrimethoxysilane hazardous?
Isobutyltrimethoxysilane has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H336 — May cause drowsiness or dizziness.
What are the upstream and downstream products of Isobutyltrimethoxysilane?
For Isobutyltrimethoxysilane, Upstream Products: Tetramethyl orthosilicate, 1-Bromo-2-methylpropane, isobutylmagnesium bromide; Downstream Products: 1,3,5,7,9,11,14-Heptaisobutyltricyclo[7.3.3.1(5,11)]heptasiloxane-endo-3,7,14-triol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isobutyltrimethoxysilane (CAS 18395-30-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40957-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.