4-Ethynylbenzaldehyde
Also known as: Benzaldehyde, 4-ethynyl-, p-Ethynylbenzaldehyde, 4-Formylphenylacetylene
4-Ethynylbenzaldehyde (CAS 63697-96-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C9H6O and a molecular weight of 130.143 g/mol. Key properties include a melting point of 89-93ºC(lit.), a boiling point of 223.8±23.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 86.8±17.6 °C. 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.
- 63697-96-1
- Jingsj CID
- J-40272-2
- Molecular Formula
- C9H6O
- Molecular Weight
- 130.143 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 89-93ºC(lit.) |
|---|---|
| Boiling Point | 223.8±23.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 86.8±17.6 °C |
| Exact Mass | 130.041870 |
| PSA | 17.07000 |
| LogP | 1.82 |
| Appearance | Powder or Crystalline Powder | White to orange to brown |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.554 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2912299000 |
|---|---|
| Summary | 2912299000. other cyclic aldehydes without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Ethynylbenzaldehyde?
The CAS number of 4-Ethynylbenzaldehyde is 63697-96-1.
What are the molecular formula and molecular weight of 4-Ethynylbenzaldehyde?
4-Ethynylbenzaldehyde has molecular formula C9H6O and molecular weight 130.143 g/mol.
Is 4-Ethynylbenzaldehyde hazardous?
4-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 4-Ethynylbenzaldehyde?
For 4-Ethynylbenzaldehyde, Upstream Products: 4-[(Trimethylsilyl)ethynyl]benzaldehyde, 4-Iodobenzaldehyde, 4-Bromobenzaldehyde; Downstream Products: N-(4-chlorobenzyl)(4-ethynylphenyl)methanamine, (4-Ethynylphenyl)methanol, 2-Ethynylbenzyl alcohol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Ethynylbenzaldehyde (CAS 63697-96-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40272-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.