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2-(4-chlorophenyl)oxirane

Also known as: (4-chlorophenyl)oxirane, 4-chlorostyrene oxide, p-chlorostyrene oxide, p-chlorostyrene epoxide, (p-chlorophenyl)oxirane, rac-para-chlorostyrene oxide, 2-(p-chlorophenyl)oxirane, 1-chloro-4-(epoxyethyl)benzene, (±)-4-chlorostyrene oxide

2-(4-chlorophenyl)oxirane (CAS 2788-86-5) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C8H7ClO and a molecular weight of 154.59400 g/mol. Key properties include a boiling point of 230.4ºC at 760mmHg, a density of 1.283 g/mL at 25 °C(lit.) and a flash point of 20.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H315 — Causes skin irritation and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
2788-86-5
Jingsj CID
J-45494-4
Molecular Formula
C8H7ClO
Molecular Weight
154.59400 g/mol
Category
Ethers
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point230.4ºC at 760mmHg
Density1.283 g/mL at 25 °C(lit.)
Flash Point20.0 °C
Exact Mass154.01900
PSA12.53000
LogP2.41130
Vapor Pressure0.0998mmHg at 25°C
Refractive Indexn20/D 1.5520(lit.)

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H315 — Causes skin irritation
  • H317 — May cause an allergic skin reaction
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2910900090
Summary2910900090. epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(4-chlorophenyl)oxirane?

The CAS number of 2-(4-chlorophenyl)oxirane is 2788-86-5.

What are the molecular formula and molecular weight of 2-(4-chlorophenyl)oxirane?

2-(4-chlorophenyl)oxirane has molecular formula C8H7ClO and molecular weight 154.59400 g/mol.

Is 2-(4-chlorophenyl)oxirane hazardous?

2-(4-chlorophenyl)oxirane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H317 — May cause an allergic skin reaction.

What are the upstream and downstream products of 2-(4-chlorophenyl)oxirane?

For 2-(4-chlorophenyl)oxirane, Upstream Products: 4-Chlorostyrene, Trimethylsulfonium iodide, 4-Chlorobenzaldehyde; Downstream Products: (4-Chlorophenyl)acetaldehyde, 2-Amino-1-(4-chlorophenyl)ethanol, 4-Chlorobenzonitrile.

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

Last updated:

How to cite: Jingsj. "2-(4-chlorophenyl)oxirane (CAS 2788-86-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45494-4 (accessed 2026-11-09).

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