Hydrogen peroxide Chemical compound Description Description Hydrogen peroxide is a chemical compound with the formula H â‚‚O â‚‚. In its pure form, it is a very pale blue liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic. 1 Gallon of 35% Hydrogen Peroxide is equivalent to over 10 gallons of 3% store bought peroxide. Always handle Food Grade Peroxide with the utmost care and safety. This is a very powerful chemical and will burn your skin, damage surfaces and bleach your clothing. Dilute using distilled water before using. Keep out of direct/indirect sunlight for long periods of time. Also avoid keeping the bottles stored in hot locations.