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1,2-butadiene

Also known as: 1,2-BUTADIENE, 1,2-BUTADIENE, PRESSURE TIN, 1,2-Butadien, 1,2-butadien, 1-Methylallene, 2,3-butadiene, 2,3-dimethylbutene, Allene, methyl-, Allene,methyl, Buta-1,2-dien, CH2=C=CHCH3, EINECS 209-674-2, METHYLALLENE, MFCD00039911, Methylallene, buta-1,2-diene, methyl-allen

1,2-butadiene (CAS 590-19-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H6 and a molecular weight of 54.09040 g/mol. Key properties include a melting point of -136.2ºC, a boiling point of 10.8 °C(lit.) and a density of 0.612 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
590-19-2
Jingsj CID
J-10307-1
Molecular Formula
C4H6
Molecular Weight
54.09040 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point-136.2ºC
Boiling Point10.8 °C(lit.)
Density0.612 g/cm3
Exact Mass54.04700
LogP1.34740

Frequently Asked Questions

What is the CAS number of 1,2-butadiene?

The CAS number of 1,2-butadiene is 590-19-2.

What are the molecular formula and molecular weight of 1,2-butadiene?

1,2-butadiene has molecular formula C4H6 and molecular weight 54.09040 g/mol.

What are the upstream and downstream products of 1,2-butadiene?

For 1,2-butadiene, Upstream Products: 3-Chloro-1-butyne, 1-Methylcyclopropene, 1-buten-3-yne; Downstream Products: 3-Butene-1,2-diol, 4-Phenyl-1-cyclohexene, 1,3-Pentadiene.

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

Last updated:

How to cite: Jingsj. "1,2-butadiene (CAS 590-19-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10307-1 (accessed 2026-11-06).

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