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Butanoic acid, 2-methylene-

Also known as: 2-Ethylacrylic acid, 2-Ethylpropenoic acid, 2-Methylenebutanoic acid, 2-Methylenebutyric acid, Ethacrylic acid, MFCD03426745, ethylacrylic acid

Butanoic acid, 2-methylene- (CAS 3586-58-1) 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 100.11600 g/mol. Key properties include a melting point of 176°C (lit.), a boiling point of 186.3ºC at 760mmHg, a density of 0.995g/cm3 and a flash point of 91.6ºC. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3586-58-1
Jingsj CID
J-16445-4
Molecular Formula
C5H8O2
Molecular Weight
100.11600 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point176°C (lit.)
Boiling Point186.3ºC at 760mmHg
Density0.995g/cm3
Flash Point91.6ºC
Exact Mass100.05200
PSA37.30000
LogP1.03720
Refractive Indexn20/D 1.437(lit.)

GHS Safety & Compliance

CorrosionSignal word: Danger
  • H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code2916190090
Summary2916190090 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 Butanoic acid, 2-methylene-?

The CAS number of Butanoic acid, 2-methylene- is 3586-58-1.

What are the molecular formula and molecular weight of Butanoic acid, 2-methylene-?

Butanoic acid, 2-methylene- has molecular formula C5H8O2 and molecular weight 100.11600 g/mol.

Is Butanoic acid, 2-methylene- hazardous?

Butanoic acid, 2-methylene- has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of Butanoic acid, 2-methylene-?

For Butanoic acid, 2-methylene-, Upstream Products: Formaldehyde, Ethylmalonic acid, Ethyl 2-methylenebutanoate; Downstream Products: Tiglic acid, Methyl tiglate, 2-Ethylacryloyl chloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Butanoic acid, 2-methylene- (CAS 3586-58-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16445-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.