624-64-6
624-64-6 structure
- Name: 2-butene
- Chemical Name: trans-but-2-ene
- CAS Number: 624-64-6
- Molecular Formula: C4H8
- Molecular Weight: 56.10630
- Catalog: Chemical reagent Organic reagent Olefins (cyclic and non-cyclic)
- Create Date: 2018-04-26 08:00:00
- Modify Date: 2025-08-25 18:24:20
| Name | trans-but-2-ene |
|---|---|
| Synonyms |
MFCD00064458
trans-2-butene EINECS 203-452-9 2-BUTENE |
| Density | 2 (vs air) |
|---|---|
| Boiling Point | 1ºC(lit.) |
| Melting Point | -140ºC(lit.) |
| Molecular Formula | C4H8 |
| Molecular Weight | 56.10630 |
| Flash Point | <-30 °F |
| Exact Mass | 56.06260 |
| LogP | 1.58240 |
| Vapour density | 2 (vs air) |
| Vapour Pressure | 2575 mm Hg ( 37.7 °C) |
| Stability | Stable. Incompatible with strong oxidizing agents, peroxides, peroxyacids, aluminium tetrahydroborate. Extremely flammable. |
| Hazard Codes | F |
|---|---|
| Risk Phrases | R12 |
| Safety Phrases | S16-S38 |
| RIDADR | UN 1012 2.1 |
| WGK Germany | 3 |
| RTECS | EM2932000 |
| Hazard Class | 2.1 |
| HS Code | 2901232000 |
| Precursor 10 | |
|---|---|
| DownStream 10 | |
| 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% |