Characters: white powder, insoluble in water and acid,soluble in the molten potassium hydrogen sulfate and hydrofluoric acid. Application: raw material of tantalum, as t...
Characters:light yellow crystalline powder, isometric systematic scandium oxide structure. Insoluble in water ,soluble in acids , easy to pick up moisture and carbon diox...
Characters: white powder. Turn to yellow when heated, insoluble in water. Application: raw material of niobium, also used in optical glass and electronics industry.
Characters:pink powder, insoluble in water, soluble in acids. Application: additive of yttrium iron garnet, glass colorant and the control materials of nuclear reactor, ...
Characters: white powder. Application: used in the production of metal germanium, also used for spectral analysis and semiconductor materials.
Characters:white powder, insoluble in water, soluble in hot sulfuric acids. Application: make portable X - ray transmission device,also used as the control materials of ...