| Melting point: |
−218 °C(lit.) |
| Boiling point: |
−183 °C(lit.) |
| Density |
1.429（0℃） |
| vapor density |
1.11 (vs air) |
| vapor pressure |
>760 mmHg at 20 °C |
| storage temp. |
-20°C |
| solubility |
At 20 °C and at a pressure of 101 kPa, 1 volume dissolves in about 32 volumes of water. |
| form |
colorless gas |
| color |
Colorless gas, liquid, or hexagonal crystals |
| Odor |
Odorless gas |
| Water Solubility |
one vol gas dissolves in 32 volumes H2O (20°C), in 7 volumes alcohol (20°C); soluble other organic liq, usually higher solubility than in H2O [MER06] |
| Merck |
13,7033 |
| Dielectric constant |
1.5（-193℃） |
| Stability: |
Stable. Vigorously supports combustion. Incompatible with phosphorus, organic materials, many powdered metals. |
| CAS DataBase Reference |
7782-44-7(CAS DataBase Reference) |
| NIST Chemistry Reference |
Oxygen(7782-44-7) |
| EPA Substance Registry System |
Oxygen (7782-44-7) |