Telluric Acid is a chemical compound with the formula H2TeO3. It is an oxoacid of tellurium, which is a metalloid element. This acid is typically encountered in its hydrated form and is known for its weak acidic properties. In its pure form, telluric acid appears as a colorless, crystalline substance. It can be used in various chemical reactions and is of interest in the study of tellurium chemistry. Its derivatives and salts, known as tellurates, have applications in different fields, including materials science and analytical chemistry.