Calcium peroxide or Calcium dioxide (CaO2) is a solid peroxide with a white or bare color. For all applied purposes calcium peroxide is baffling in baptize but will deliquesce in acid to anatomy hydrogen peroxide. When in acquaintance with baptize it will anon activate to decompose absolution oxygen.

Calcium peroxide is bogus to capricious blueprint and abstention and can be acclimated in altered areas of industry and agriculture. In agronomics it is acclimated as an oxygen fertilizer, and is aswell acclimated in the presowing treatments of rice seed. Also, calcium peroxide has begin use in the aquaculture industry as it is acclimated to aerate and antisepticize water, and in the ecological apology industry as it is acclimated in the analysis of soils. Calcium Peroxide is acclimated in a agnate address to magnesium peroxide for ecology apology programs. It is acclimated to restore clay and groundwater attenuated with petroleum hydrocarbons by aesthetic aerobic microbial abasement of the contaminants in a action accepted as Enhanced In-Situ Bioremediation.

As a aliment accretion it has the E amount E930 and is acclimated as abrade acid abettor and convalescent agent.