… (percarbonates), i.e., carbonates containing an excess of oxygen, such as (Na 2 CO 4 ) (peroxomonocarbonates) or (Na 2 … carbon dioxide. White powders, dissolving in water to form oxygen and neutral sodium carbonate. Used for bleaching, in …
… and trimmed books. The sheets take the shape of irregular polygons, like the crystals from which they were obtained, … they have been rifted, they have the shape of irregular polygons. Their edges are roughly trimmed. They are marketed …
… calcining precipitated strontium carbonate. Porous white, hygroscopic powder, soluble in water. Forms the carbonate … Strontium peroxide (SrO 2 ). Prepared by the action of oxygen on strontium oxide. White powder, decomposed by hot …
… (where the breathing circuit is fed from a cylinder of oxygen or compressed air) or may be connected by a hose to … ). (d) Divers’ respiratory masks of a kind used without oxygen or compressed air bottles, and simple underwater …
… salt. White solid which discolours in the presence of oxygen, turning into ferric hydroxide. (2) Ferric … It is an amphoteric hydroxide which, after oxygenation, gives the ferrates of heading 28.41. This …
