Tetrachlorohydroquinone is primarily used as an intermediate in the synthesis of various organic compounds, particularly in the production of dyes and pigments. Its role is crucial in creating complex colorants for textiles, inks, and coatings. Additionally, it serves as a precursor in the manufacture of certain agrochemicals, including herbicides and pesticides, where its chemical structure contributes to the effectiveness of these products. In the field of polymer chemistry, it is utilized in the development of specialty resins and plastics, enhancing their properties such as durability and resistance to degradation. Furthermore, it finds application in analytical chemistry as a reagent for detecting and quantifying specific substances in laboratory settings.