Used primarily in the printing and textile industries as a light-sensitive compound in the production of diazo-type photocopying papers. It acts as a key component in diazo printing, where it facilitates the creation of blueprints and other technical drawings. Additionally, it is employed in the synthesis of dyes and pigments, particularly for coloring textiles and paper. Its light-sensitive properties make it valuable in photolithography processes for creating patterns on surfaces. In research, it serves as a reagent in organic synthesis, especially for introducing diazo groups into molecules.