Preparation of calcium peroxide
To prepare the calcium peroxide 8-hydrate, 11g of calcium chloride 6-hydrate are dissolved in 5 ml of water and treated with 50ml of fresh 3% hydrogen peroxide and then with 7 ml of concentrated ammonia solution in 100 ml of water. If this procedure is carried out at 55° C, or if only 30ml of water are used for the ammonia at 20° C, the four-tenths hydrate is obtained. Yield, about 4.5 g of the CaO2 · 8-hydrate and 3.0g of the CaO2 · 0.4-hydrate.
Inorganic laboratory preparations, by G. G. Schlessinger, 8, 1962
Calcium dioxide, CALCIUM PEROXIDE, peroxidocalcium, Calciumperoxid, Kalziumperoxid, Calper, Calper G, cyc-CaO2, UNII-7FRO2ENO91, Ca(O2), Calcium peroxide (Ca(O2)), HSDB 965, CHEBI:48233, EINECS 215-139-4, UN1457, Calcium peroxide [UN1457] [Oxidizer], 12049-69-3, 1305-79-9, 55396-25-3, 61976-87-2