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Water solubility

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Description of key information

The water solubility of cerium trichloride was determined in a GLP study following the test design as specified in test method EC A.6 and OECD Guideline 105 (Walker, 2012). The maximum water solubility has been determined to be in the range of 74.9 to 79.9% w/w (equals 1.283 to 1.4354 kg/L) at 20°C and a pH range of 1.3 to 1.4. Buffer solutions (pH 4, 7 and 9) were overruled and were concluded not to influence the solubility of the substance in water significantly at the strength tested.

Key value for chemical safety assessment

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

Additional information

The substance is miscible with water up to a 1:1 ratio. The bounded value of 100 g/L is used as the key value for chemical safety assessment, being the maximum value for water solubility as defined in the EUSES program. Buffer solutions tested at pH 4, 7 and 9 were overruled; resulting pH-values were comparable to pH values of the non-buffered solution (1.3 to 3.5) and initial pH did not influence water solubility significantly.