3-(trimethylsilyl)ethynylbenzaldehyde
Also known as: 3-(TRIMETHYLSILYL)ETHYNYLBENZALDEHYDE, 3-(2-trimethylsilylethynyl)benzaldehyde, 3-TMS-ethynylbenzaldehyde, 3-[2-(trimethylsilyl)ethynyl]benzaldehyde, Benzaldehyde, 3-[2-(trimethylsilyl)ethynyl]-, GL-0047
3-(trimethylsilyl)ethynylbenzaldehyde (CAS 77123-55-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H14OSi and a molecular weight of 202.32400 g/mol. Key properties include a boiling point of 518.8ºC at 760 mmHg, a density of 1.47 g/cm3 and a flash point of 267.6ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 77123-55-8
- Jingsj CID
- J-1481742-6
- Molecular Formula
- C12H14OSi
- Molecular Weight
- 202.32400 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 518.8ºC at 760 mmHg |
|---|---|
| Density | 1.47 g/cm3 |
| Flash Point | 267.6ºC |
| Exact Mass | 202.08100 |
| PSA | 17.07000 |
| LogP | 2.72800 |
| Refractive Index | 1.514 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- 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 3-(trimethylsilyl)ethynylbenzaldehyde?
The CAS number of 3-(trimethylsilyl)ethynylbenzaldehyde is 77123-55-8.
What are the molecular formula and molecular weight of 3-(trimethylsilyl)ethynylbenzaldehyde?
3-(trimethylsilyl)ethynylbenzaldehyde has molecular formula C12H14OSi and molecular weight 202.32400 g/mol.
Is 3-(trimethylsilyl)ethynylbenzaldehyde hazardous?
3-(trimethylsilyl)ethynylbenzaldehyde has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 3-(trimethylsilyl)ethynylbenzaldehyde?
For 3-(trimethylsilyl)ethynylbenzaldehyde, Upstream Products: 3-Bromobenzaldehyde, Trimethylsilylacetylene, Palladium(II) acetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-(trimethylsilyl)ethynylbenzaldehyde (CAS 77123-55-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1481742-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.