Propiolaldehyde
Also known as: Propynal, 2-Propynal, Propargylic aldehyde, Propargylaldehyde, Propiolic aldehyde, prop-2-ynal, 2-Propyn-1-al, Acetylenecarboxaldehyde, Propyn-3-al
Propiolaldehyde (CAS 624-67-9) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C3H2O and a molecular weight of 54.047 g/mol. Key properties include a boiling point of 60.0±9.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 4.8±15.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 624-67-9
- Jingsj CID
- J-1308609-4
- Molecular Formula
- C3H2O
- Molecular Weight
- 54.047 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 60.0±9.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 4.8±15.7 °C |
| Exact Mass | 54.010567 |
| PSA | 17.07000 |
| LogP | 0.57 |
| Vapor Pressure | 196.4±0.1 mmHg at 25°C |
| Refractive Index | 1.388 |
Customs & Trade Information
| HS Code | 2912190090 |
|---|---|
| Summary | 2912190090 acyclic aldehydes without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Propiolaldehyde?
The CAS number of Propiolaldehyde is 624-67-9.
What are the molecular formula and molecular weight of Propiolaldehyde?
Propiolaldehyde has molecular formula C3H2O and molecular weight 54.047 g/mol.
What are the upstream and downstream products of Propiolaldehyde?
For Propiolaldehyde, Upstream Products: Dipropargyl ether, N,N-Dimethylformamide, Acetylene; Downstream Products: 5,6,7,8-tetrahydroquinolin-5-one, 2-Hydroxy-3-butynoic acid, 1-Phenyl-1H-1,2,3-triazole-4-carbaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Propiolaldehyde (CAS 624-67-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1308609-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.