rajesh@eltech.in

+91-22-28972424 : +91-22-28972626

Ozone Properties

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

Property Ozone Oxygen
Molecular Formula: 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