But-2-ene
反-2-丁烯 · 2-بوتين · 2-buten · 2-βουτένιο · ۲-بوتن · 2-butén · 2-butena · 2-ブテン · 2-buten · 2-butenă · 2-buten · β-бутилен
| CAS | 107-01-7 |
|---|---|
| EC | 203-452-9 |
| UN | 1012 |
| Formula | C4H8 |
| Molar mass | 56.11 g/mol |
| Relative density of the gas or vapour (air = 1) | 1.94 |
| GHS | Danger · H220, H280 |
2-butene appears as a colorless liquefied petroleum gas. Asphyxiate gas. Flammability limits in air 1.8-9.7% by volume.