Octadecylsilane
十八烷基硅烷
Also known as: N-OCTADECYLSILANE, Silane, octadecyl-, OCTADECYLSILANE, octadecyl-silan, octadecylsilanemixtureofisomers, n-octadecylsilane, MFCD00039874, EINECS 242-453-9
Octadecylsilane (CAS 18623-11-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H40Si and a molecular weight of 284.596 g/mol. It is also known as N-OCTADECYLSILANE, Silane, octadecyl- and OCTADECYLSILANE. Key properties include a melting point of 29ºC(lit.), a boiling point of 346.1±11.0 °C at 760 mmHg, a density of 0.795 g/mL at 25 °C(lit.) and a flash point of 163.1±19.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18623-11-5
- Jingsj CID
- J-10386-8
- Molecular Formula
- C18H40Si
- Chinese Name
- 十八烷基硅烷
- Molecular Weight
- 284.596 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 29ºC(lit.) |
|---|---|
| Boiling Point | 346.1±11.0 °C at 760 mmHg |
| Density | 0.795 g/mL at 25 °C(lit.) |
| Flash Point | 163.1±19.3 °C |
| Exact Mass | 284.289917 |
| LogP | 6.03160 |
| Appearance | solid |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
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 Octadecylsilane?
The CAS number of Octadecylsilane is 18623-11-5.
What are the molecular formula and molecular weight of Octadecylsilane?
Octadecylsilane has molecular formula C18H40Si and molecular weight 284.596 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Octadecylsilane (CAS 18623-11-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10386-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.