Used as a precursor in the production of titanium dioxide pigments, metatitanic acid plays a key role in manufacturing white pigments for paints, coatings, plastics, and paper due to its high opacity and brightness. It is also employed in the synthesis of specialty ceramics and catalysts where controlled particle size and purity are essential. In some cases, it serves as an intermediate in flame-retardant materials and in the preparation of titania-based nanomaterials for photocatalytic applications.