Longman Dictionary of Contemporary English
n. (context inorganic compound English) A colourless liquid, H2O2, soluble in water, used as a mild antiseptic, bleaching agent (especially for bleaching hair), oxidizing agent and chemical reagent.
n. a viscous liquid with strong oxidizing properties; a powerful bleaching agent; also used as a disinfectant and (in strong concentrations) as an oxidant in rocket fuels [syn: peroxide]
Hydrogen peroxide is a chemical compound with the formula , and thus is a hydrogen chalcogenide. In its pure form, it is a colourless liquid, slightly more viscous than water; however, for safety reasons it is normally used as a solution. Hydrogen peroxide is the simplest peroxide (a compound with an oxygen–oxygen single bond) and finds use as a weak oxidizer, bleaching agent and disinfectant. Concentrated hydrogen peroxide, or " high-test peroxide", is a reactive oxygen species and has been used as a propellant in rocketry.
Hydrogen peroxide is often described as being "water but with one more oxygen atom", a description that can give the incorrect impression of significant chemical similarity between the two compounds. While they have a similar melting point and appearance, pure hydrogen peroxide will explode if heated to boiling, will cause serious contact burns to the skin and can set materials alight on contact. For these reasons it is usually handled as a dilute solution (household grades are typically 3–6% in the U.S. and somewhat higher in Europe). Its chemistry is dominated by the nature of its unstable peroxide bond.
Usage examples of "hydrogen peroxide".
The engine had switched from fuel-air to fuel-decomposed hydrogen peroxide.
And we actually need the hydrogen peroxide and the pasta too, it's not just a luxury like lettuce seeds.
And we actually need the hydrogen peroxide and the pasta too, it’.
The reaction control system was a set of simple hydrogen peroxide rockets.
They watched, by video broadcast, as the Brazilian astronauts filled their fuel tanks for their return and used hydrogen peroxide-fueled snowmobiles to explore the polar regions surrounding their spacecraft's landing site.
Driven by superheated steam, made by decomposing hydrogen peroxide.
He watched himself button the collar buttons of his shirt, then tossed the towels over the shower curtain rod, got the hairbrush out of the cabinet and ran it through his hair, then brought out the hydrogen peroxide.
But then when they were in the warehouse itself, stuffing small hydrogen peroxide containers in their backpacks, all the lights in the place went on at once, and emergency doors slid shut.
The Brilliant Pebbles stopped their lazy orbital spin by squirting out tiny jets of hydrogen peroxide.
The hydrogen peroxide felt as if it ate through Buchanan's skull and into his brain.