2-butene
Also known as: 2-BUTENE, EINECS 203-452-9, MFCD00064458, trans-but-2-ene
2-butene (CAS 624-64-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H8 and a molecular weight of 56.10630 g/mol. Key properties include a melting point of -140ºC(lit.), a boiling point of 1ºC(lit.), a density of 2 (vs air) and a flash point of <-34.4 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 624-64-6
- Jingsj CID
- J-1992212-4
- Molecular Formula
- C4H8
- Molecular Weight
- 56.10630 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -140ºC(lit.) |
|---|---|
| Boiling Point | 1ºC(lit.) |
| Density | 2 (vs air) |
| Flash Point | <-34.4 °C |
| Exact Mass | 56.06260 |
| LogP | 1.58240 |
| Additional Property | 2 (vs air) |
| Vapor Pressure | 2575 mm Hg ( 37.7 °C) |
Customs & Trade Information
| HS Code | 2901232000 |
|---|---|
| Summary | 2901232000 (e)-but-2-ene。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:2.0%。general tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-butene?
The CAS number of 2-butene is 624-64-6.
What are the molecular formula and molecular weight of 2-butene?
2-butene has molecular formula C4H8 and molecular weight 56.10630 g/mol.
What are the upstream and downstream products of 2-butene?
For 2-butene, Upstream Products: butadiene, 1-Butene, cis-2-butene; Downstream Products: sec-Butylbenzene, Cumene, 1,4-Diisopropylbenzene.
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-butene (CAS 624-64-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992212-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.