Registration Dossier
Registration Dossier
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EC number: 261-235-4 | CAS number: 58398-71-3
Storage stability and reactivity towards container material
Administrative data
Link to relevant study record(s)
Description of key information
The corrosion rate of aluminium and steel at 55 °C test temperature by aqueous solutions of calcium hydroxide is lower than 6.25 mm/year, thus the test material is non-corrosive to metal surfaces.
Additional information
Non-corrosive to metal surfaces.
Since alkalinity is the driving factor for reactivity of the substance towards container materials and alkalinity of calcium magnesium (di)hydroxide oxide and calcium hydroxide is comparable, the results of this study can be considered relevant also for calcium magnesium (di)hydroxide oxide. The pH of a saturated aqueous solution of calcium magnesium (di)hydroxide oxide has been determined at 11.7 (see water solubility, O'Connor and Woolley, 2010), whereas Ca(OH)2 creates a pH value of 12.4 (Fox, 2010b).
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