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Diss Factsheets

Physical & Chemical properties

Water solubility

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
other: Handbook data.
Adequacy of study:
key study
Study period:
1986
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline followed
Version / remarks:
Handbook data.
Principles of method if other than guideline:
Principles of method not specified; handbook data.
GLP compliance:
not specified
Type of method:
other: Handbook data.
Water solubility:
1.09 kg/m³
Temp.:
0 °C
Remarks on result:
other: pH value not specified.
Water solubility:
0.78 kg/m³
Temp.:
10 °C
Remarks on result:
other: pH value not specified.
Water solubility:
0.57 kg/m³
Temp.:
20 °C
Remarks on result:
other: pH value not specified.
Water solubility:
0.4 kg/m³
Temp.:
30 °C
Remarks on result:
other: pH value not specified.
Details on results:
Most of the solubility determinations have been performed with diluted ozone, and the values extrapolated to 100 % ozone.

Table: Solubility of ozone in water (Ullmann's Encyclopedia 1986)

Temperature (°C)

Bunsen coefficient (dimensionless, m³ O3 / m³ H2O, reduced to 0°C and 101 kPa)

O3 solubility (kg/m³)

0

0.51

1.09

10

0.38

0.78

20

0.29

0.57

30

0.21

0.40

40

0.15

0.27

50

0.11

0.19

60

0.08

0.14
Conclusions:
Ozone has a water solubility of 0.57 g/L at a temperature of 20 °C.
Executive summary:

Ozone has a water solubility of 0.57 g/L at a temperature of 20 °C. The solubility of ozone in water decreases when temperature increases. The solubility values listed in Ullmann's Encyclopedia are extrapolated values, because the original experiments have been performed with diluted ozone. 100 % ozone gas is never generated (impossible and dangerous). Apart from temperature, the solubility of ozone in water is also dependent on the ozone concentration in the feed gas (Henry's law) and the pH, which is not covered by this record.

Description of key information

Ozone has a water solubility of 0.57 g/L at a temperature of 20 °C.

Key value for chemical safety assessment

Water solubility:
0.57 g/L
at the temperature of:
20 °C

Additional information

The solubility of ozone in water decreases when temperature increases. The solubility values listed in Ullmann's Encyclopedia are extrapolated values, because the original experiments have been performed with diluted ozone. 100 % ozone gas is never generated (impossible and dangerous). Apart from temperature, the solubility of ozone in water is also dependent on the ozone concentration in the feed gas (Henry's law) and the pH, which is not covered by this record. The increased solubility of ozone at lower temperatures is supported by handbook data from the Kirk-Othmer Encyclopedia of Chemical Technology (1.1 g/L at 0 °C).