Used as an intermediate in the synthesis of dyes and pigments, particularly for azo dyes that require chlorinated aromatic backbones for enhanced stability and color fastness. Also employed in the production of certain pharmaceuticals where the sulfonic acid group aids in solubility and bioavailability. Its chlorinated structure makes it valuable in agrochemical formulations, especially in herbicides and fungicides, where it contributes to the molecule’s reactivity and target specificity. Additionally, it serves as a building block in the preparation of sulfonamide-based compounds with potential biological activity.