Typical ozone half-life depending on temperature .

Gas Ozone in ice

Dissolved in water

(pH 7 )




3 months

-50 * C.

30 minutes

15 * C.

18 days

-35 * C.

20 minutes

20 * C.

8 days

-25 * C.

15 minutes

25 * C.

Three days

20 * C.

12 minutes

30 * C.

1.5 minutes

120 * C

8 minutes

35 * C.

1.5 seconds

250 * C

These values are based on the thermal composition, wall effects and other catalytic effects are not included

The actual half-life of ozone will be significantly shorter when it comes to organic load, along with pressure, humidity and other factors. These values give a good indication of how quickly ozone decomposes, as well as how high the temperature of the factor affects the half-life of ozone.

Temperature can play both positive and negative effects on ozone applications. When the temperature is very low, the half-life of ozone is very long, however, ozone is much more stable and may not react as soon as we assume. In contrast, when the temperatures are very high, the ozone half-life may be so short that there is no time for ozone, or the ozone reaction rate may not be accelerated sufficiently to create the desired reaction in a shorter time. When working with ozone, the key factor will be maintaining proper concentration and temperature.