504-31-4 ?? ??
| ???? |
?? ?? |
| ?? |
2H-??-2-?; 2-???; 2H-??-2-? |
| ?? ?? |
alpha-Pyrone;2H-Pyran-2-one; 2-Pyranone; 2H-Pyrane-2-one |
| ??? |
C5H4O2 |
| ??? |
96.0841 |
| InChI |
InChI=1/C5H4O2/c6-5-3-1-2-4-7-5/h1-4H |
| cas?? |
504-31-4 |
| EC?? |
207-990-5 |
| ?? ?? |
|
| ?? |
1.192g/cm3 |
| ??? |
207.5°C at 760 mmHg |
| ?? ?? |
1.507 |
| ??? |
89.2°C |
| ??? |
0.225mmHg at 25°C |
|