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Physical & Chemical properties

Water solubility

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water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May/June 1989
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to
EU Method A.6 (Water Solubility)
GLP compliance:
Type of method:
flask method
Key result
Water solubility:
<= 93 g/L
Conc. based on:
test mat. (dissolved fraction)
Incubation duration:
24 h
24 °C
The substance is fully soluble up to 93 g/L in pure water.
Executive summary:

A study was conducted to determine the water solubility of the test substance according to EU Method A.6, in compliance with GLP. The substance was weighted into distilled water and mixed for a minimum of 24 h. The aqueous solution was then centrifuged for 60 min at 24°C and filtered under pressure. The centrifuge glass was checked visually after decanting and the filter surface was checked at the end of the filtration process. The analytical method used was UV spectrometry. As a result of the high concentration of chloralkali in the test substance, a “salting-out" effect was observed at higher weighed-in concentrations. This resulted in a decrease in the dye concentrations in the aqueous phase, at higher test substance concentrations. The substance is fully soluble up to 93 g/L in pure water

. The saturated solution had a pH of 8 (Böck, 1989).

Description of key information

The water solubility was determined according to EU Method A.6 (Böck, 1989).

The substance is fully soluble up to 93 g/L in pure water.

Key value for chemical safety assessment

Water solubility:
93 g/L
at the temperature of:
24 °C

Additional information