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EC number: 630-337-4 | CAS number: 39211-00-2
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Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Cesium tetrafluoroaluminate demonstrates a time-functional solubility in acid and native solution. After one day stirring a mostly stable solution is found with solubility around 13 g ±1 g/l.
Key value for chemical safety assessment
- Water solubility:
- 13 g/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of cesium tetrafluoroaluminate was determined in an in-house non-GLP non-guideline study. Despite some limitations in design and/or reporting, the study is considered adequate for assessment. Cesium tetrafluoroaluminate demonstrates a spontaneous solubility of 38.2 g/l (without pH adjustment). From the solution cesium tetrafluoroaluminate dihydrate is further on crystallized or precipitated. After one day stirring a mostly stable solution is found with solubility around 13 ±1 g/l. The pH of the unadjusted solution varies between 5.6 and 6.1. lt is assumed that without pH adjustment cesium tetrafluoroaluminate will dissociate into the ions Cs+ and AlF4-, eventually partly into Al+, Cs+ and F-. With pH adjustment to pH 7 and pH 9 a gel-like residue is formed, which could not be filtrated. At pH 4 and two days of stirring a solubility of 13.1 g/l was determined.
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