Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Metal hydrides react quickly with water, forming metal hydroxide and hydrogen gas. Depending on the water solubility of the hydroxide this product may be dissolved or precipitated.

The hydrolysis reaction of calcium hydride (CaH2) has been followed according OECD guideline N°111. From this study report, it has been demonstarted that calcium hydride is hydrolytically extremely unstable (less than 1 seconde) at all conditions of temperature (20, 37, 40 and 50°C) and pH (1.2; 4; 7 and 9). Calcium hydride will never be found in aqueous phase or environmental water, however calcium hydroxide is to form to which living organisms will be exposed.

For further details on the hydrolysis reaction of calcium hydride, refer to section 5.1.2 Hydrolysis of this dossier.

Additional information