Methyl crotonate
Also known as: Methyl (2E)-2-butenoate, trans-Methyl crotonate, 2-Butenoic acid, methyl ester, Crotonic acid, methyl ester, Methyl (E)-but-2-enoate, Methyl trans-crotonate
Methyl crotonate (CAS 623-43-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H8O2 and a molecular weight of 100.116 g/mol. Key properties include a boiling point of 121.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 4.4±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.
- 623-43-8
- Jingsj CID
- J-1992206-6
- Molecular Formula
- C5H8O2
- Molecular Weight
- 100.116 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 121.0±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 4.4±0.0 °C |
| Exact Mass | 100.052429 |
| PSA | 26.30000 |
| LogP | 1.32 |
| Vapor Pressure | 14.9±0.2 mmHg at 25°C |
| Refractive Index | 1.414 |
| Additional Property | IMMISCIBLE |
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 crotonate?
The CAS number of Methyl crotonate is 623-43-8.
What are the molecular formula and molecular weight of Methyl crotonate?
Methyl crotonate has molecular formula C5H8O2 and molecular weight 100.116 g/mol.
Is Methyl crotonate hazardous?
Methyl crotonate 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 crotonate?
For Methyl crotonate, Upstream Products: Allyl methyl carbonate, Methanol, Crotonic acid; Downstream Products: methyl 5-methyl-4-oxo-1,4-dihydropyrrolo[2,1-f][1,2,4]triazine-6-carboxylate, (S)-3-Aminobutanoic acid, (R)-3-Aminobutanoic acid.
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 crotonate (CAS 623-43-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992206-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.