The chemical formula of hydrogen peroxide is H? O?. Because it contains two O, it is commonly known as hydrogen peroxide. It appears as a colorless and transparent liquid and is a strong oxidizing agent. Its aqueous solution is suitable for medical wound disinfection, environmental disinfection and food disinfection. Under normal circumstances, it will decompose into water and oxygen, but the decomposition rate is extremely slow. The way to speed up the reaction is to add a catalyst-manganese dioxide or irradiate it with short-wave rays. After decomposition, oxygen and water will be generated. This is a focus of laboratory oxygen production in junior high school chemistry. However, hydrogen peroxide is also a carcinogen announced by the World Health Organization.
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