Hexachlorodisilane
Also known as: 1,1,1,2,2,2-Hexachlorodisilane, Disilane, 1,1,1,2,2,2-hexachloro-, Disilane, hexachloro-, EINECS 236-704-1, HEXACHLORODISILANE, HEXACHLORODISILANE, 99.9%, Hexachlordisilan, Hexachlorodisilane (HCDS), MFCD00011599, Si2Cl6, hexachloro-disilan, trichloro(trichlorosilyl)silane
Hexachlorodisilane (CAS 13465-77-5) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Cl6Si2 and a molecular weight of 268.889 g/mol. Key properties include a melting point of <0ºC, a boiling point of 144.5±9.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 78°C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 13465-77-5
- Jingsj CID
- J-26512-3
- Molecular Formula
- Cl6Si2
- Molecular Weight
- 268.889 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | <0ºC |
|---|---|
| Boiling Point | 144.5±9.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 78°C |
| Exact Mass | 265.766968 |
| LogP | 8.55 |
| Vapor Pressure | 6.4±0.3 mmHg at 25°C |
| Refractive Index | 1.489 |
| Storage Conditions | below 5° C |
| Stability | Stable, but reacts violently with water. Moisture sensitive. May be shock sensitive. Incompatible with water, moisture, acids, strong bases, oxidizing agents, alcohols. |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Frequently Asked Questions
What is the CAS number of Hexachlorodisilane?
The CAS number of Hexachlorodisilane is 13465-77-5.
What are the molecular formula and molecular weight of Hexachlorodisilane?
Hexachlorodisilane has molecular formula Cl6Si2 and molecular weight 268.889 g/mol.
Is Hexachlorodisilane hazardous?
Hexachlorodisilane has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Hexachlorodisilane (CAS 13465-77-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26512-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.