Telluric acid is primarily used in analytical chemistry as a reagent for the determination of certain metals, such as beryllium and aluminum, due to its ability to form stable complexes. It is also employed in the synthesis of organic compounds, where it serves as an oxidizing agent in specific reactions. In materials science, telluric acid is utilized in the preparation of tellurium-based compounds, which are important in the development of semiconductors and thermoelectric materials. Additionally, it finds application in the field of glass manufacturing, where it is used to modify the properties of glass, enhancing its durability and optical characteristics.