1-Butene
Also known as: 1-BUTYLENE, 1-C4H8, 1-N-BUTENE, Butene, Butene-1, Butylene, EINECS 203-449-2, MFCD00009383, N-BUTENE, UNII-LY001N554L, but-1-ene, n-Buten-1, n-Butylene, α-butylene
1-Butene (CAS 106-98-9) 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 56.106 g/mol. Key properties include a melting point of −185 °C(lit.), a boiling point of -6.0±3.0 °C at 760 mmHg, a density of 0.6±0.1 g/cm3 and a flash point of -49.6±9.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 106-98-9
- Jingsj CID
- J-16282-9
- Molecular Formula
- C4H8
- Molecular Weight
- 56.106 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −185 °C(lit.) |
|---|---|
| Boiling Point | -6.0±3.0 °C at 760 mmHg |
| Density | 0.6±0.1 g/cm3 |
| Flash Point | -49.6±9.0 °C |
| Exact Mass | 56.062599 |
| LogP | 2.37 |
| Additional Property | 1.93 (vs air) |
| Vapor Pressure | 2213.9±0.0 mmHg at 25°C |
| Refractive Index | 1.371 |
| Additional Property | -185.35℃ |
Customs & Trade Information
| HS Code | 2901231000 |
|---|---|
| Summary | 2901231000 but-1-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 1-Butene?
The CAS number of 1-Butene is 106-98-9.
What are the molecular formula and molecular weight of 1-Butene?
1-Butene has molecular formula C4H8 and molecular weight 56.106 g/mol.
What are the upstream and downstream products of 1-Butene?
For 1-Butene, Downstream Products: sec-Butylbenzene, 1-Bromo-2-chlorobutane, 1,2-dichlorobutane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Butene (CAS 106-98-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16282-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.