Used primarily in the production of titanium metal and titanium dioxide pigment. It serves as a key intermediate in the Kroll process, where it is reduced with magnesium or sodium to produce metallic titanium for aerospace and industrial applications. In pigment manufacturing, titanium tetrachloride is oxidized to form titanium dioxide, widely used in paints, coatings, plastics, and paper due to its brightness and opacity. It also finds use as a catalyst in organic synthesis and in smoke screens or fog generation due to its reaction with moisture in air, producing dense white fumes. Additionally, it is employed in surface treatment processes to improve adhesion and corrosion resistance of metals.