| Product Name | but-2-ynal |
| CAS No. | 1119-19-3 |
| Synonyms | 2-butynal; But-2-ynal |
| InChI | InChI=1/C4H4O/c1-2-3-4-5/h4H,1H3 |
| Molecular Formula | C4H4O |
| Molecular Weight | 68.074 |
| Density | 0.905g/cm3 |
| Boiling point | 106.5°C at 760 mmHg |
| Flash point | 28°C |
| Refractive index | 1.413 |
1119-19-3 but-2-ynal
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