| Name | Diacetylene |
| Synonyms | butadiyne Diacetylene biacetylene 1,3-Butadiyne buta-1,3-diеne buta-1,3-diyne 1,3-Butanediyne Butane-1,3-diyne |
| CAS | 460-12-8 |
| EINECS | 207-303-9 |
| Molecular Formula | C4H2 |
| Molar Mass | 50.06 |
| Density | 0.7090 |
| Melting Point | -35.99°C |
| Boling Point | 10.85°C |
| Water Solubility | 1g/L(25 ºC) |
| Refractive Index | 1.4189 |
| UN IDs | 3161 |
| Raw Materials | Pyridine, 3,4-didehydro- 3-Penten-1-yne, 4-methyl- 3,5-DINITROPYRIDINE Cyanoacetylene 2-METHYL-1-BUTEN-3-YNE Acetylene ISOBUTYLENE |
| Downstream Products | HYDROGEN CYANIDE 1-BUTEN-3-YNE |
| stability | Stability Highly flammable. Readily forms explosive mixtures with air. May form peroxides in storage. |
| EPA chemical information | 1,3-Butadiyne (460-12-8) |
| HazardClass | 2.1 |
| category | Explosives |
| explosive hazard characteristics | easy to explode; polymerization explosion at 0 ℃; reaction with silver nitrate to generate friction sensitive explosive substance |
| flammability hazard characteristics | thermal decomposition discharges spicy and irritating smoke |
| storage and transportation characteristics | The warehouse is ventilated and dry at low temperature; it is stored separately from oxidants, silver nitrate, and acids; it is not easy to store for a long time to prevent polymerization |
| fire extinguishing agent | water, dry powder, carbon dioxide, foam, 1211 fire extinguishing agent |