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4-Vinylcyclohexene

Also known as: 4-Ethenylcyclohexene, 4-VCH, 4-Vinyl-1-Cyclohexene, 4-Vinyl-1-cycl, 4-Vinyl-1-cyclohexene, 4-Vinyl-1-cyclohexene,stabilized, 4-Vinylcyclohex-1-ene, 4-ethenyl-Cyclohexene, 4-vinyl-1-cyclohexen, 4-vinyl-cyclohexen, Butadiene dimer, Cyclohexene, 4-ethenyl-, EINECS 202-848-9, L6UTJ D1U1, MFCD00001576, NSC 15760, Vinyl-1-cyclohex

4-Vinylcyclohexene (CAS 100-40-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H12 and a molecular weight of 108.181 g/mol. Key properties include a melting point of -101 °C, a boiling point of 128.9±20.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 20.0±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
100-40-3
Jingsj CID
J-1991555-5
Molecular Formula
C8H12
Molecular Weight
108.181 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-101 °C
Boiling Point128.9±20.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point20.0±0.0 °C
Exact Mass108.093903
LogP3.31
Additional Property3.76 (vs air)
Vapor Pressure12.7±0.1 mmHg at 25°C
Refractive Index1.544

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H304
  • H315 — Causes skin irritation
  • H351 — Suspected of causing cancer
  • H361 — Suspected of damaging fertility or the unborn child
  • H412 — Harmful to aquatic life with long lasting effects

Customs & Trade Information

HS Code2902199090
Summary2902199090 other cyclanes, cyclenes and cyclotherpenes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Vinylcyclohexene?

The CAS number of 4-Vinylcyclohexene is 100-40-3.

What are the molecular formula and molecular weight of 4-Vinylcyclohexene?

4-Vinylcyclohexene has molecular formula C8H12 and molecular weight 108.181 g/mol.

Is 4-Vinylcyclohexene hazardous?

4-Vinylcyclohexene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H304; H315 — Causes skin irritation.

What are the upstream and downstream products of 4-Vinylcyclohexene?

For 4-Vinylcyclohexene, Upstream Products: butadiene, 1,2-Dibromo-4-(1,2-dibromoethyl)cyclohexane, N,N,N',N'-Tetramethyldiaminomethane; Downstream Products: 4-Ethylcyclohexanone, 1,2-Dibromo-4-(1,2-dibromoethyl)cyclohexane, 2-Cyclohexylethylamine.

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

Last updated:

How to cite: Jingsj. "4-Vinylcyclohexene (CAS 100-40-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991555-5 (accessed 2026-11-06).

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