Features of ozone
Ozone is an environmentally friendly alternative to many chemical processes. It has a high redox potential, can be generated at the point of use and is easily converted back to oxygen. Since ozone is an unstable molecule, ozone has to be generated on-site. A common technique is electrical discharge, sometimes also called silent electrical discharge. By applying high-frequency alternating voltage to oxygen gas, the oxygen molecules (O2) will be split into atoms. Ozone (O3) is formed by recombination of atomic and molecular oxygen.
Physical Properties of Ozone and Oxygen
Property | Ozone (O3) |
Color | Gas: blue colored Gas: colorless Dissolved in water: purple blue Dissolved in water: in concentration > 20 ppm |
Molecular weight, g/mol | 48 |
Boiling Point, °C (K) | -112 (161.3) |
Density, kg/m3 | 2.144 |
Solubility in water at 0(C) | 0.64 |
Electrochemical potential, V | 2.08 (Hydroxyl radical OH° 2.80) |
Typical ozone half time
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