| Name | 1,2-BUTADIENE |
| Synonyms | methyl-allen METHYLALLENE 1,2-Butadien 1,2-BUTADIENE buta-1,2-diene Allene,methyl- Allene, methyl- 1,2-BUTADIENE, PRESSURE TIN |
| CAS | 590-19-2 |
| EINECS | 209-674-2 |
| Molecular Formula | C4H6 |
| Molar Mass | 54.09 |
| Density | 0.6460 |
| Melting Point | -136.2°C |
| Boling Point | 10.8°C(lit.) |
| Water Solubility | 735mg/L at 20℃ |
| Storage Condition | Freezer |
| Refractive Index | 1.4205 |
| Physical and Chemical Properties | Category: flammable liquid flammability hazard characteristics flammable; Thermal decomposition discharge of spicy and irritating smoke storage and transportation characteristics warehouse ventilation and drying at low temperature; High temperature protection, flame and strong oxidant fire extinguishing agent cut off gas source; Water, dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Hazard Symbols | F+ - Highly flammable![]() |
| Risk Codes | 12 - Extremely Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 2037 2.1 |
| WGK Germany | 1 |
| FLUKA BRAND F CODES | 4.5-31 |
| Hazard Class | 2.1 |
| LogP | 1.99 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| category | flammable liquid |
| flammability hazard characteristics | flammable; thermal decomposition discharges spicy and irritating smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; protection against high temperature, flame and strong oxidant |
| fire extinguishing agent | cut off the gas source; water, dry powder, dry sand, carbon dioxide, foam, 1211 fire extinguishing agent |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |