Triethyl(ethynyl)silane
Also known as: (Triethylsilyl)acetylene, Ethynyltriethylsilane, Triethylethynylsilane, TES-acetylene, Triethylsilylacetylene, silane, triethylethynyl-, triethyl(ethynyl)silane, MFCD00075373
Triethyl(ethynyl)silane (CAS 1777-03-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H16Si and a molecular weight of 140.298 g/mol. Key properties include a boiling point of 140.2±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 17.2±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1777-03-3
- Jingsj CID
- J-47317-6
- Molecular Formula
- C8H16Si
- Molecular Weight
- 140.298 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 140.2±9.0 °C at 760 mmHg |
|---|---|
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 17.2±0.0 °C |
| Exact Mass | 140.102127 |
| LogP | 3.75 |
| Vapor Pressure | 7.8±0.2 mmHg at 25°C |
| Refractive Index | 1.421 |
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 Triethyl(ethynyl)silane?
The CAS number of Triethyl(ethynyl)silane is 1777-03-3.
What are the molecular formula and molecular weight of Triethyl(ethynyl)silane?
Triethyl(ethynyl)silane has molecular formula C8H16Si and molecular weight 140.298 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Triethyl(ethynyl)silane (CAS 1777-03-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47317-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.