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Cyclooctene

Also known as: 5-cyclooctadiene, CYCLOOCTENE,STANDARD FOR GC, EINECS 213-245-5, MFCD00001753, cis-Cyclooctene, cis-cyclo-octene, cyclo-octene, cyclooctaene, trans-cyclooctene

Cyclooctene (CAS 931-88-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H14 and a molecular weight of 110.19700 g/mol. Key properties include a melting point of −16 °C(lit.), a boiling point of 32-34 °C12 mm Hg(lit.), a density of 0.848 g/mL at 20 °C(lit.) and a flash point of 25.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H304. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
931-88-4
Jingsj CID
J-1318660-5
Molecular Formula
C8H14
Molecular Weight
110.19700 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/2/2026
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Physicochemical Properties

Melting Point−16 °C(lit.)
Boiling Point32-34 °C12 mm Hg(lit.)
Density0.848 g/mL at 20 °C(lit.)
Flash Point25.0 °C
Exact Mass110.11000
LogP2.89680
Refractive Indexn20/D 1.470

GHS Safety & Compliance

Flammable / Health HazardSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H304

Frequently Asked Questions

What is the CAS number of Cyclooctene?

The CAS number of Cyclooctene is 931-88-4.

What are the molecular formula and molecular weight of Cyclooctene?

Cyclooctene has molecular formula C8H14 and molecular weight 110.19700 g/mol.

Is Cyclooctene hazardous?

Cyclooctene has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H304.

What are the upstream and downstream products of Cyclooctene?

For Cyclooctene, Upstream Products: 1,3-cyclooctadiene, 1,5-cyclooctadiene, Cyclooctane; Downstream Products: 2-(3,5-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, cis-1,2-Cyclooctanediol, octanedial.

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

Last updated:

How to cite: Jingsj. "Cyclooctene (CAS 931-88-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1318660-5 (accessed 2026-11-07).

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