... dioxide Formula: TiO2 : White powder, insoluble in water, soluble in hot and concentrated strong acid and alkali with ... , printing ink, papermaking, plastic, rubber, artificial fibers, electric welding rods, enamel, electric appliances, building materials etc. Specifications: TiO2 ... printing oil, paper making, plastic, rubber, artificial fiber, welding electric, enamel, electric appliances, and so on