Chlorotrimethylsilane
Also known as: Trimethylchlorosilane, Trimethylsilyl chloride, CSI, TMCS, chloro(trimethyl)silane, Trimethylchlorosilane (TMCS)
Chlorotrimethylsilane (CAS 75-77-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C3H9ClSi and a molecular weight of 108.642 g/mol. Key properties include a melting point of −40 °C(lit.), a boiling point of 58.7±9.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of -27.8±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 75-77-4
- Jingsj CID
- J-920909-9
- Molecular Formula
- C3H9ClSi
- Molecular Weight
- 108.642 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −40 °C(lit.) |
|---|---|
| Boiling Point | 58.7±9.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | -27.8±0.0 °C |
| Exact Mass | 108.016205 |
| LogP | 2.17 |
| Additional Property | 3.7 (vs air) |
| Vapor Pressure | 219.8±0.1 mmHg at 25°C |
| Refractive Index | 1.388 |
| Additional Property | REACTS |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H301 — Toxic if swallowed
- H331 — Toxic if inhaled
- H312 — Harmful in contact with skin
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 29310095 |
|---|
Frequently Asked Questions
What is the CAS number of Chlorotrimethylsilane?
The CAS number of Chlorotrimethylsilane is 75-77-4.
What are the molecular formula and molecular weight of Chlorotrimethylsilane?
Chlorotrimethylsilane has molecular formula C3H9ClSi and molecular weight 108.642 g/mol.
Is Chlorotrimethylsilane hazardous?
Chlorotrimethylsilane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H331 — Toxic if inhaled.
What are the upstream and downstream products of Chlorotrimethylsilane?
For Chlorotrimethylsilane, Upstream Products: Ethoxytrimethylsilane, Methoxytrimethylsilane, Bis(trimethylsilyl) sulfate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Chlorotrimethylsilane (CAS 75-77-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-920909-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.