| Product Name | 2,3-Butanedione |
| CAS No. | 431-03-8 |
| Synonyms | DIACETYLE; Biacetyl; Diacetyl; butane-2,3-dione |
| InChI | InChI=1/C4H6O2/c1-3(5)4(2)6/h1-2H3 |
| Molecular Formula | C4H6O2 |
| Molecular Weight | 86.0892 |
| Density | 0.969g/cm3 |
| Melting point | -4℃ |
| Boiling point | 88°C at 760 mmHg |
| Flash point | 5.5°C |
| Water solubility | 200 g/L (20℃) |
| Refractive index | 1.381 |
| Hazard Symbols |  F:Flammable;  Xn:Harmful; |
| Risk Codes | R11:; R20/21/22:; R36/38:; |
| Safety | S16:; S26:; S36/37/39:; |
431-03-8 2,3-butanedione
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