<Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> <P> Hydrogen peroxide is a chemical compound with the formula H O . In its pure form, it is a pale blue, clear liquid, slightly more viscous than water . Hydrogen peroxide is the simplest peroxide (a compound with an oxygen--oxygen single bond). It is used as an oxidizer, bleaching agent and antiseptic . Concentrated hydrogen peroxide, or "high - test peroxide", is a reactive oxygen species and has been used as a propellant in rocketry . Its chemistry is dominated by the nature of its unstable peroxide bond . </P> <P> Hydrogen peroxide is unstable and slowly decomposes in the presence of base or a catalyst . Because of its instability, hydrogen peroxide is typically stored with a stabilizer in a weakly acidic solution . Hydrogen peroxide is found in biological systems including the human body . Enzymes that use or decompose hydrogen peroxide are classified as peroxidases . </P>

What is the chemical composition of hydrogen peroxide
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