trans-2,3-Epoxybutane
Also known as: trans-2,3-dimethyloxirane, trans-2-butene oxide, trans-2-butylene oxide, trans-2,3-dimethyloxyrane, 2,3-Butylene oxide (trans), Butane, 2,3-epoxy-, trans-, rac-trans-butene oxide
trans-2,3-Epoxybutane (CAS 21490-63-1) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C4H8O and a molecular weight of 72.10570 g/mol. Key properties include a boiling point of 56.5ºC at 760mmHg, a density of 0.804 and a flash point of -26°C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21490-63-1
- Jingsj CID
- J-25595-8
- Molecular Formula
- C4H8O
- Molecular Weight
- 72.10570 g/mol
- Category
- Ethers
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 56.5ºC at 760mmHg |
|---|---|
| Density | 0.804 |
| Flash Point | -26°C |
| Exact Mass | 72.05750 |
| PSA | 12.53000 |
| LogP | 0.79360 |
| Refractive Index | n20/D 1.373 |
Customs & Trade Information
| HS Code | 2910900090 |
|---|---|
| Summary | 2910900090. 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 trans-2,3-Epoxybutane?
The CAS number of trans-2,3-Epoxybutane is 21490-63-1.
What are the molecular formula and molecular weight of trans-2,3-Epoxybutane?
trans-2,3-Epoxybutane has molecular formula C4H8O and molecular weight 72.10570 g/mol.
What are the upstream and downstream products of trans-2,3-Epoxybutane?
For trans-2,3-Epoxybutane, Upstream Products: 2-butene, cis-2-butene, 3-iodo-butan-2-ol; Downstream Products: 3-methyl-2-pentanol, 3-Methyl-3-pentanol, 2,3-Butanediol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "trans-2,3-Epoxybutane (CAS 21490-63-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25595-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.