Hexamethyldisilane
Also known as: HMD, 1,1,1,2,2,2-Hexamethyldisilane, Me3Si-SiMe3, Permethyldisilane, Disilane, hexamethyl-, disilane,hexamethyl, hexamethyl-disilan, hexamethyl-silane, NSC 294211
Hexamethyldisilane (CAS 1450-14-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H18Si2 and a molecular weight of 146.378 g/mol. Key properties include a melting point of 9-12 °C(lit.), a boiling point of 113.5±9.0 °C at 760 mmHg, a density of 0.7±0.1 g/cm3 and a flash point of 5.8±11.8 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H319 — Causes serious eye irritation and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1450-14-2
- Jingsj CID
- J-29797-4
- Molecular Formula
- C6H18Si2
- Molecular Weight
- 146.378 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 9-12 °C(lit.) |
|---|---|
| Boiling Point | 113.5±9.0 °C at 760 mmHg |
| Density | 0.7±0.1 g/cm3 |
| Flash Point | 5.8±11.8 °C |
| Exact Mass | 146.094696 |
| LogP | 2.50 |
| Vapor Pressure | 24.5±0.2 mmHg at 25°C |
| Refractive Index | 1.391 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H319 — Causes serious eye irritation
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
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 Hexamethyldisilane?
The CAS number of Hexamethyldisilane is 1450-14-2.
What are the molecular formula and molecular weight of Hexamethyldisilane?
Hexamethyldisilane has molecular formula C6H18Si2 and molecular weight 146.378 g/mol.
Is Hexamethyldisilane hazardous?
Hexamethyldisilane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H319 — Causes serious eye irritation; H334 — May cause allergy or asthma symptoms if inhaled.
What are the upstream and downstream products of Hexamethyldisilane?
For Hexamethyldisilane, Upstream Products: Chlorotrimethylsilane, Bromotrimethylsilane, Tetrahydrofuran; Downstream Products: trimethyl(4-nitrophenoxy)silane, 2-(4-METHOXYBENZYL)MALONONITRILE, (3-Bromophenoxy)trimethylsilane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Hexamethyldisilane (CAS 1450-14-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29797-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.