2-trans-Butene
2-BUTENE
CAS: 624-64-6
Molecular Formula: C4H8
2-trans-Butene - Names and Identifiers
| Name | 2-BUTENE |
| Synonyms | 2-BUTENE (E)-2-C4H8 (E)-2-Butene 2-Butene,(E)- (E)-But-2-ene 2-trans-Butene 2-Butene, (2E)- beta-trans-butylene |
| CAS | 624-64-6 |
| EINECS | 210-855-3 |
| InChIKey | IAQRGUVFOMOMEM-ONEGZZNKSA-N |
2-trans-Butene - Physico-chemical Properties
| Molecular Formula | C4H8 |
| Molar Mass | 56.11 |
| Density | 0.5990 |
| Melting Point | −140°C(lit.) |
| Boling Point | 1°C(lit.) |
| Flash Point | <−30°F |
| Vapor Presure | 2575 mm Hg ( 37.7 °C) |
| Vapor Density | 2 (vs air) |
| Merck | 1520 |
| BRN | 1718756 |
| Stability | Stable. Incompatible with strong oxidizing agents, peroxides, peroxyacids, aluminium tetrahydroborate. Extremely flammable. |
| Explosive Limit | 9.7% |
| Refractive Index | 1.3932 |
| Physical and Chemical Properties | Stable. Incompatible with strong oxidizing agents, peroxides, peroxyacides, aluminum hydroborate. Melting point 105.8 ℃, boiling point 0.88 ℃, relative density 0.6042(20/4 ℃), refractive index 1.3848(-25 ℃). Soluble in organic solvents, insoluble in water. |
2-trans-Butene - Risk and Safety
| Risk Codes | R12 - Extremely Flammable R11 - Highly Flammable |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. |
| UN IDs | UN 1012 2.1 |
| WGK Germany | 3 |
| RTECS | EM2932000 |
| Hazard Class | 2.1 |
2-trans-Butene - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| production method | exists in the C4 fraction obtained by catalytic cracking of refinery gas and petroleum fraction and cracking of petroleum hydrocarbons. Industrial isomerization is used to obtain the isomerization method. The carbon four extraction liquid is used as the raw material, and in the presence of palladium/alumina catalyst, the isomerization of 1-butene is isomerized to 2-butene, and then distilled to obtain trans-2-butene. From the dehydration of butanol. |
| auto-ignition temperature | 615 °F |
| DOT Classification | 2.1 (Flammable gas) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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