Registration Dossier
Registration Dossier
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EC number: 231-826-1 | CAS number: 7757-93-9
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The water solubility of calcium hydrogenorthophosphate was determined according to EU Method A.6 (Water solubility) and under the conditions of GLP.
Key value for chemical safety assessment
- Water solubility:
- 0.153 g/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of the test material has been determined to be 0.153 g/l of solution at 20.0 ± 0.5°C in un-buffered glass double-distilled water, resulting in sample solution pH’s of approximately 6.5. Solubility was identified as being significantly influenced by solution pH. An increase in solubility was observed as the pH of the solutions decreased with a significant increase in the pH 4 buffered solution.
The temperature range of 10 to 30°C was shown not to have a significant influence on the water solubility of the test material (range 0.114 to 0.123 g/l).
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