Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes, which are widely applied in textiles, paper, and leather industries. It is also employed in the manufacturing of fluorescent brightening agents, enhancing the whiteness and brightness of materials like detergents and plastics. In organic chemistry, it serves as a reagent for introducing formyl groups into aromatic compounds, facilitating further chemical modifications. Additionally, it finds use in the preparation of pharmaceutical compounds, contributing to the development of active ingredients in medications. Its water-soluble nature makes it suitable for applications in aqueous formulations and industrial processes.