Titanium tetrachloride is a chemical compound with the formula TiCl4. It is a colorless liquid at room temperature and has a pungent odor. This compound is primarily used in the production of titanium dioxide, a widely used white pigment in paints, coatings, and plastics. When exposed to moisture, titanium tetrachloride reacts to form hydrochloric acid and titanium dioxide. Due to its reactivity, it must be handled with care, as it can cause severe burns and respiratory issues. It is also used in the production of titanium metal through the Kroll process.