This standard specifies the classification, requirements, test methods, inspection rules, signs and labels, packaging, transportation and storage of nano-titanium dioxide. This standard applies to nano titanium dioxide. This product is mainly used in the manufacture of sunscreen cosmetics, functional chemical fibers, high-grade plastics, paints, inks, coatings, electronic ceramics, catalysts and their carriers. Molecular formula: TiO2 Relative molecular mass: 79.88 (according to the international relative atomic mass in 2001)