1. Very unstable, it will decompose when exposed to heat, light, rough surface, heavy metals and other impurities, and release oxygen and heat at the same time. It has strong oxidizing ability and is a strong oxidant. It is stable and corrosive in the presence of acid. High concentrations of hydrogen peroxide can burn organic substances. Interacts with manganese dioxide and can cause an explosion. Wear protective clothing, gloves made of polyethylene or polyvinyl chloride, and transparent protective glasses and masks made of polymer materials when working. If it touches the skin or splashes into the eyes, rinse with warm water. The 30% aqueous solution has a melting point of -32.6°C, a boiling point of 107°C, and a relative density of 1.132. Hydrogen peroxide has strong oxidizing properties, but it can also be used as a reducing agent in some cases. High-concentration hydrogen peroxide solution can cause explosive decomposition due to impurities or metal powder. In addition, high-concentration hydrogen peroxide can cause edema when it comes in contact with the skin, so once the skin comes into contact with high-concentration hydrogen peroxide, rinse immediately with plenty of water.
2. It can be arbitrarily miscible with water and alcohol, and the aqueous solution is weakly acidic. It is oxidizing. It is corrosive and can cause burns. It will decompose into water and oxygen during storage. A small amount of acetylaniline and acetylethoxyaniline can be added as stabilizers. This product is corrosive. If the liquid is splashed on the skin, it will quickly appear white and have a burning sensation. The gas will irritate the eyes and lungs.
3. The chemical properties of hydrogen peroxide are weakly acidic, oxidizing, and reductive instability. Hydrogen peroxide has both oxidizing and reducing properties, of which oxidizing is the main one; when hydrogen peroxide encounters a strong oxidizing agent, it undergoes a reduction reaction; when hydrogen peroxide undergoes an oxidation reaction or a reduction reaction, it does not cause damage to the environment. Impurities, therefore, hydrogen peroxide is an ideal oxidant or reducing agent for the preparation and removal of impurities.
4. High-concentration hydrogen peroxide solution and vapor have strong irritant and corrosive effects on the human body. The solution with a content of more than 30% will turn white and sting when contacting the skin; contact with the eyes can cause inflammation and even burns. The vapor content above 50mg/kg can strongly irritate the eyes and mucous membranes and cause respiratory disorders. The human body's short-term exposure to hydrogen peroxide vapor has a concentration limit of 75mg/kg, and it is life-threatening if it exceeds 100mg/kg. A lot of water should be used to rinse the body contact area. Industrial hydrogen peroxide with a concentration of less than 86%, as long as the conditions meet the requirements, will not explode at room temperature. Products with a concentration higher than 86% can only explode when there is a high-energy initiating source. Hydrogen peroxide in the vapor phase can explode under certain conditions. Its explosive limit concentration under atmospheric pressure is about 26mol/m3. The gas phase containing 90% H2O2 is safe as long as it is kept below 115°C.
