Barium peroxide

Barium peroxide is the chemical compound with the formula BaO₂. This grey-white solid is one of the most common inorganic peroxides. Barium peroxide is an oxidizing agent, which is used for bleaching. It is used in fireworks as an oxidizer, which also gives a vivid green colour, as do all barium compounds.

Barium peroxide is a peroxide, containing O₂^2− subunits wherein the oxygen atoms bond to each other as well as to the barium. The solid adopts the same structure as calcium carbide, CaC₂.

Barium peroxide arises by the reversible absorption of O₂ by barium oxide. The oxygen is released above 500°C. 2 BaO + O₂ ⇌ 2 BaO₂
This reaction is the basis for the now-obsolete Brin Process for separating oxygen from the atmosphere. Other oxides, e.g. Na₂O, behave similarly.

Hydrogen peroxide can also be prepared via the related reaction: BaO₂ + H₂SO₄ → H₂O₂ + BaSO₄

Translation of "Barium peroxide"

Arabic: فوق أكسيد الباريوم, German: Bariumperoxid, French: Peroxyde de baryum, Italian: Perossido di bario, Hungarian: Bárium-peroxid, Dutch: Bariumperoxide, Portuguese: Peróxido de bário, Russian: Пероксид бария, Chinese: 过氧化钡.