Ozone and Oxygen Properties
Ozone is one of the most powerful oxidants used in water and air applications.
See the different properties of ozone below:
| PROPERTY | OZONE | OXYGEN |
|---|---|---|
| Color | Light Blue | Colorless |
| Smell | Smell after Lightning Storm | Odorless |
| Density (g/l) | 2.144 | 1.429 |
| Molecular Weight | 48 | 32 |
| Solubility in Water (0° C) | 0.640 | 0.049 |
| Electochemical Potential (volts) | 2.070 | 1.230 |
Typical O3 Half-Life vs. Temperature
| GASEOUS TEMP (°C) | GASEOUS HALF-LIFE* | DISSOLVED TEMP (°C) | DISSOLVED HALF-LIFE |
|---|---|---|---|
| -50 | 3 Months | 15 | 30 Minutes |
| -35 | 18 Days | 20 | 20 Minutes |
| -25 | 8 Days | 25 | 15 Minutes |
| 20 | 3 Days | 30 | 12 Minutes |
| 120 | 1.5 Hours | 35 | 8 Minutes |
| 250 | 1.5 seconds |
* These values are based on thermal decomposition only. No wall effects, humidity, organic loading or other catalytic effects are considered.
Ozone Solubility
The solubility of ozone depends on the water temperature and the ozone concentration in the gas phase: Units in g/m3.
| OZONE GAS | 0°C | 5°C | 10°C | 15°C | 20°C | 25°C | 30°C | 35°C |
|---|---|---|---|---|---|---|---|---|
| 25 g/m3 | 16.00 | 12.50 | 9.75 | 7.75 | 6.00 | 4.75 | 3.75 | 3.00 |
| 50 g/m3 | 32.00 | 25.00 | 19.50 | 15.50 | 12.00 | 9.50 | 7.50 | 6.00 |
| 75 g/m3 | 48.00 | 37.50 | 29.25 | 23.25 | 18.00 | 14.25 | 11.25 | 9.00 |
| 100 g/m3 | 64.00 | 50.00 | 39.00 | 31.00 | 24.00 | 19.00 | 15.00 | 12.00 |
| 125 g/m3 | 80.00 | 62.50 | 48.75 | 38.75 | 30.00 | 23.75 | 18.75 | 15.00 |
| 150 g/m3 | 96.00 | 75.00 | 58.50 | 46.50 | 36.00 | 28.50 | 22.50 | 18.75 |
| 175 g/m3 | 112.00 | 87.50 | 68.25 | 45.25 | 42.00 | 33.25 | 26.25 | 21.00 |
| 200 g/m3 | 128.00 | 100.00 | 78.00 | 62.00 | 48.00 | 38.00 | 30.00 | 24.00 |
Note: 14.3 g/m3 = 1% ozone
Example: 50 g/m3 = 3.5% ozone