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Physical & Chemical properties

Storage stability and reactivity towards container material

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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 the results of this study can be considered relevant also for dolomite calcined as the alkalinity of dolomite calcined is ≤ 10.6 compared to the pH of calcium hydroxide (pH 12.4) (see water solubility, O'Connor and Woolley, 2010, and Fox, 2010b).