- Phone: 800-492-1252
- Fax: 440-368-3569
- E-mail: info@spartanwatertreatment.com
What is ozone? Discovered by Christian Friedrich Schonbein in 1840, ozone is triatomic oxygen with the chemical formula O3. It derives its name from the Greek word ozein or ogeiv, “to smell or smell.” Ozone gas is light blue at room temperature and has a characteristic pungent odor. Physical property data is provided in the table below:
| Molecular Weight | 48 g/mole |
| Density Relative to Air | 1.66 |
| Specific Weight at 0 degree C & 760 mm Hg | 2.143 kg/m3 |
| Heat of Formation | 34.5 kcal/mole |
| Boiling Point | -112 degrees C (dark blue liquid) |
| Melting Point | -193 degrees C (dark red or blue solid) |
At standard temperature and pressure, ozone is a blue gas. It forms a dark blue liquid below -112 °C and a dark blue solid below -193 °C. It is a powerful oxidizing agent, and is unstable, decaying to ordinary oxygen through the reaction: 2O3 → 3O2.
| Gaseous | Dissolved in Water (pH 7) | ||
|---|---|---|---|
| Half Life Time | Temperature | Half Life Time | Temperature |
| 3 months | -50 C | 30 minutes | 15 C |
| 18 days | -35 C | 20 minutes | 20 C |
| 8 days | -25 C | 15 minutes | 25 C |
| 3 days | 20 C | 12 minutes | 30 C |
| 1.5 hours | 120 C | 8 minutes | 35 C |
| 1.5 seconds | 250 C |
Values based on thermal decomposition only does not consider chemical reactions, wall and catalytic effects.
| Temperature (Degrees C) | mg/l 100% Ozone in Gas | mg/l 2.5 wt % Ozone in Gas | mg/l 5.0 wt. % Ozone in Gas | mg/l 10 wt. % Ozone in Gas |
|---|---|---|---|---|
| 0 | 1090 | 27.5 | 54.5 | 109 |
| 10 | 780 | 19.5 | 39 | 78 |
| 20 | 570 | 14.25 | 28.5 | 57 |
| 30 | 400 | 10 | 20 | 40 |
| 40 | 270 | 6.75 | 13.5 | 27 |
| 50 | 190 | 4.75 | 9.5 | 19 |
| 60 | 140 | 3.5 | 7.0 | 14 |
Learn more about ozone and its use in water treatment.
Spartan Environmental Technologies, LLC
PO Box 1270
Mentor, OH 44061-1270