Hydrogen peroxide (H2O2) is a chemical compound composed of two hydrogen atoms and two oxygen atoms. It is a pale blue liquid in its pure form and is commonly used as a disinfectant, bleaching agent, and oxidizer. Here are some key characteristics and uses of hydrogen peroxide:

1. Chemical Formula: H2O2
2. Appearance: Pure hydrogen peroxide is a colorless liquid, but it is often sold in dilute solutions, which can appear clear or slightly bluish.
3. Chemical Properties: Hydrogen peroxide is a powerful oxidizing agent, meaning it can readily donate oxygen atoms to other substances. It decomposes into water and oxygen when exposed to light, heat, or certain catalysts.
4. Concentration: Hydrogen peroxide is commonly available in various concentrations, with the most common household concentration being 3%. Higher concentrations are available for industrial and commercial purposes.
5. Disinfectant: It is used as an antiseptic to clean and disinfect wounds and as a mouthwash. The effervescence observed when hydrogen peroxide is applied to a wound is due to the release of oxygen gas as it breaks down.
6. Bleaching Agent: Hydrogen peroxide is used as a bleach for hair, textiles, and paper products. It can remove stains and whiten materials.
7. Rocket Propellant: In the field of rocketry, high-concentration hydrogen peroxide is used as a propellant in some rocket engines.
8. Water Treatment: It can be used to disinfect and treat water in certain industrial processes.
9. Cleaning Agent: Hydrogen peroxide is used for cleaning and sterilizing surfaces, especially in healthcare and laboratory settings.
10. Chemical Manufacturing: It serves as a raw material in the production of various chemicals, including peracetic acid, which is a potent disinfectant.

It’s important to handle hydrogen peroxide with care, as it can be corrosive at high concentrations and may cause skin irritation or other health issues if not used properly. When storing hydrogen peroxide, it should be kept in a cool, dark place in a tightly sealed container to prevent decomposition. Additionally, it should be kept away from flammable materials, as it can react vigorously in the presence of certain substances.