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Ozone Properties

Half-Life vs Temperature

Ozone is one of the most powerful oxidants used in water & air applications. See the different properties of ozone below.

Molecular Formula: Ozone vs. Oxygen
Model O3 O2
Molecular Weight: 48 g/mol 32 g/mol
Smell: – clothes after being outside on clothesline
– photocopy machines
– smell after lightning storms
odorless
Color: light blue colorless
Boilint Point: -111.3 deg C (-168.4 deg F) -183 deg C (-297.4 deg F)
Density: 2.141 kg/m3 (0.133 lb/ft3) 1.429 kg/m3
Electrochemical Potential: 2.07 1.23
Specific gravity @ STP
(air = 1):
1.612 1.105
Solubility in Water (0-deg C): 190 mg/l 14.6 mg/l
CAS number 10028-15-6 7782-44-7
Odor Threshold: 5-20 PPB (0.005 – 0.02 PPM) odorless

 

Ozone Half-Life vs. Temperature

 

Temp (C): half-life in air *
-50 3-months
-35 18-days
-25 8-days
20 3-days
120 1.5-hours
250 1.5-seconds

* These values are based on thermal decomposition only. No wall effects, humidity, organic loading or other catalytic effects are considered.

Temp (C): half-life in water (minutes)
15 30
20 20
25 15
30 12
35 8

 

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