methyl propiolate
Also known as: methyl prop-2-ynoate, Propiolic acid methyl ester, Methyl acetylenecarboxylate, Methyl propynoate, Propargylic acid methyl ester, 2-Propynoic acid methyl ester, Acetylenecarboxylic acid methyl ester
methyl propiolate (CAS 922-67-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H4O2 and a molecular weight of 84.073 g/mol. Key properties include a boiling point of 104.0±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 10.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 922-67-8
- Jingsj CID
- J-1967250-5
- Molecular Formula
- C4H4O2
- Molecular Weight
- 84.073 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 104.0±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 10.0±0.0 °C |
| Exact Mass | 84.021126 |
| PSA | 26.30000 |
| LogP | 0.89 |
| Vapor Pressure | 31.4±0.2 mmHg at 25°C |
| Refractive Index | 1.408 |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0% |
Frequently Asked Questions
What is the CAS number of methyl propiolate?
The CAS number of methyl propiolate is 922-67-8.
What are the molecular formula and molecular weight of methyl propiolate?
methyl propiolate has molecular formula C4H4O2 and molecular weight 84.073 g/mol.
Is methyl propiolate hazardous?
methyl propiolate has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of methyl propiolate?
For methyl propiolate, Upstream Products: Methanol, Propiolic acid, Benzonitrile; Downstream Products: Methyl 1-methyl-1,2,3-triazole-5-carboxylate, Methyl 1-methyl-1H-1,2,3-triazole-4-carboxylate, Methyl 4-ethoxybenzoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "methyl propiolate (CAS 922-67-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1967250-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.