Trimethylsilylacetylene
Also known as: (Trimethylsilyl)acetylene, TMS-acetylene, TMSA, Ethynyltrimethylsilane, Trimethylethynylsilane, Ethynyl(trimethyl)silane, Trimethylsilylethyne, Silane, ethynyltrimethyl-
Trimethylsilylacetylene (CAS 1066-54-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H10Si and a molecular weight of 98.218 g/mol. Key properties include a melting point of >0°C, a boiling point of 53.0±0.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of -16.7±11.3 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 1066-54-2
- Jingsj CID
- J-1106948-9
- Molecular Formula
- C5H10Si
- Molecular Weight
- 98.218 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >0°C |
|---|---|
| Boiling Point | 53.0±0.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | -16.7±11.3 °C |
| Exact Mass | 98.055176 |
| LogP | 2.16 |
| Vapor Pressure | 272.9±0.1 mmHg at 25°C |
| Refractive Index | 1.401 |
| Additional Property | reacts |
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 Trimethylsilylacetylene?
The CAS number of Trimethylsilylacetylene is 1066-54-2.
What are the molecular formula and molecular weight of Trimethylsilylacetylene?
Trimethylsilylacetylene has molecular formula C5H10Si and molecular weight 98.218 g/mol.
What are the upstream and downstream products of Trimethylsilylacetylene?
For Trimethylsilylacetylene, Upstream Products: Chlorotrimethylsilane, Acetylene, Sodium acetylide; Downstream Products: 5-Bromo-2-[(trimethylsilyl)ethynyl]pyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Trimethylsilylacetylene (CAS 1066-54-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1106948-9 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.