2,4-Pentanedione [ 123-54-6 ]
                | mp | -23 °C | 
| bp | 140.4 °C(lit.) | 
| density | 0.975 g/mL at 25 °C(lit.) | 
| vapor density | 3.5 (vs air) | 
| vapor pressure | 6 mm Hg ( 20 °C) | 
| refractive index | n | 
| Fp | 66 °F | 
| storage temp. | 2-8°C | 
| color | very deep green-yellow | 
| Water Solubility | 16 g/100 mL (20 ºC) | 
| Merck | 14,81 | 
| BRN | 741937 | 
| CAS DataBase Reference | 123-54-6(CAS DataBase Reference) | 
| NIST Chemistry Reference | Acetylacetone(123-54-6) | 
| EPA Substance Registry System | 2,4-Pentanedione(123-54-6) |