Chemical Properties
| Melting point | -103 °C |
| Boiling point | 131-132 °C(lit.) |
| Density | 0.751 g/mL at 25 °C(lit.) |
| vapor pressure | 35 mm Hg ( 37.7 °C) |
| refractive index | n |
| Flash point | 85 °F |
| storage temp. | 0-6°C |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| Water Solubility | Sparingly soluble in water( 29.1 mg/L). |
| BRN | 1732138 |
| CAS DataBase Reference | 1942-45-6(CAS DataBase Reference) |
| EPA Substance Registry System | 4-Octyne (1942-45-6) |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 10-36/37/38-65 |
| Safety Statements | 26-62 |
| RIDADR | UN 3295 3/PG 3 |
| WGK Germany | 3 |
| F | 10-23 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29012990 |
