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2,2,3,3-Tetramethyloxirane

Also known as: Tetramethylethylene oxide, Tetramethyloxirane, 2,3-Dimethyl-2,3-epoxybutane, 2,3-Dimethyl-2-butene oxide, 2,3-Epoxy-2,3-dimethylbutane, Oxirane, tetramethyl-

2,2,3,3-Tetramethyloxirane (CAS 5076-20-0) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C6H12O and a molecular weight of 100.15900 g/mol. Key properties include a boiling point of 72.9ºC at 760mmHg, a density of 0.827g/cm3 and a flash point of -3 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour and H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5076-20-0
Jingsj CID
J-1011773-0
Molecular Formula
C6H12O
Molecular Weight
100.15900 g/mol
Category
Ethers
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point72.9ºC at 760mmHg
Density0.827g/cm3
Flash Point-3 °C
Exact Mass100.08900
PSA12.53000
LogP1.57380
Refractive Indexn 20/D 1.396

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H302 — Harmful if swallowed

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 2,2,3,3-Tetramethyloxirane?

The CAS number of 2,2,3,3-Tetramethyloxirane is 5076-20-0.

What are the molecular formula and molecular weight of 2,2,3,3-Tetramethyloxirane?

2,2,3,3-Tetramethyloxirane has molecular formula C6H12O and molecular weight 100.15900 g/mol.

Is 2,2,3,3-Tetramethyloxirane hazardous?

2,2,3,3-Tetramethyloxirane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed.

What are the upstream and downstream products of 2,2,3,3-Tetramethyloxirane?

For 2,2,3,3-Tetramethyloxirane, Upstream Products: tetramethylethylene, 2,3-Dimethyl-2,3-butanediol, 2,4,6-Tri-tert-butylphenol; Downstream Products: Pinacolone, 2,3-Dimethyl-3-buten-2-ol, 2,3-DIMETHYL-1,3-BUTADIENE.

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

Last updated:

How to cite: Jingsj. "2,2,3,3-Tetramethyloxirane (CAS 5076-20-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1011773-0 (accessed 2026-11-07).

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