Commonly known as titanium dioxide or TiO2. Chemical-TiO2. Molecular 79.90. A white amorphous powder, heating variable yellow, brown by the high-temperature change, when the cold was white. Do not dissolve in water. Chemical properties are quite stable and do not dissolve in nitric acid and dilute sulfuric acid. Soluble in hot concentrated sulfuric acid, hydrofluoric acid. The weaker gender oxides, hydrogen sulfate and potassium sulfate production titanium melting; Sodium hydroxide and sodium titanium melting generation. For the white pigments and porcelain glaze, but also for the system titanium, titanium alloy, Carbide. Rubber and paper for use as fill. The electrical insulation system for the industrial, electricity and other porcelain. Industrial use sulfuric acid decomposition ilmenite, iron later obtained by the hydrolysis.