Hydrogen peroxide

Hydrogen peroxide (H₂O₂), unstable chemical compound that acts as an oxidizing agent that may cause poisoning. Hydrogen peroxide is marketed as an aqueous solution ranging from the common concentration of 3% as a topical antiseptic, 6% in hair preparations (bleaches, neutralizers, and so forth), to 30% for industrial and laboratory use and 90% for use in rocket propulsion. Decomposition of hydrogen peroxide may release large volumes of oxygen (10 times the volume for a 3% solution). Dropping a 3% solution on the eye, 3–5 times a day has been reported to be innocuous, but high-concentration hydrogen peroxide is generally feared as a cause of severe corneal damage. Ingestion of the commonly available household products (3–6%) should cause no problem other than possible mucous membrane and gastrointestinal irritation, while higher concentrations (such as 30%) are considered corrosive.

See also: Antiseptic.