Used as an intermediate in the synthesis of dyes and pigments, particularly for producing naphthoic acid derivatives with specific color properties. It serves in the development of functional organic compounds for use in agrochemicals and pharmaceuticals due to its halogenated aromatic structure. Also employed in research for preparing ligands and sensors where chlorinated naphthalene frameworks enhance binding or optical characteristics. Its carboxylic acid group allows for easy derivatization in multi-step organic synthesis.