Skip to main content
Jingsj
.mol.sdf

penta-1,2-diene

Also known as: 1,2-PENTADIENE, 1,2-Pentadiene, 1,2-Pentadiene>, 1-Methyl-2,3-butadiene, 4-Methyl-1,2-butadiene, CH2=C=CHCH2CH3, EINECS 209-737-4, ETHYLALLENE, pentadiene

penta-1,2-diene (CAS 591-95-7) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H8 and a molecular weight of 68.11700 g/mol. Key properties include a melting point of -137.26°C, a boiling point of 45ºC and a density of 0.7. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
591-95-7
Jingsj CID
J-27253-9
Molecular Formula
C5H8
Molecular Weight
68.11700 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026
Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point-137.26°C
Boiling Point45ºC
Density0.7
Exact Mass68.06260
LogP1.73750
Refractive Index1.4170 to 1.4210

Frequently Asked Questions

What is the CAS number of penta-1,2-diene?

The CAS number of penta-1,2-diene is 591-95-7.

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

penta-1,2-diene has molecular formula C5H8 and molecular weight 68.11700 g/mol.

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

For penta-1,2-diene, Upstream Products: Pent-1-yne, 1-Pentyn-3-ol, Diethyl sulfate; Downstream Products: 1-buten-3-yne, Propyne, Pent-1-yne.

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

Last updated:

How to cite: Jingsj. "penta-1,2-diene (CAS 591-95-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27253-9 (accessed 2026-11-07).

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