Sodium 2-nitrophenolate is primarily used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes, which are widely employed in the textile, paper, and leather industries. Its nitro group and phenolic structure make it a valuable component in creating vibrant and stable colorants. Additionally, it finds application in organic synthesis, serving as a precursor for various chemical reactions, including the preparation of pharmaceuticals and agrochemicals. In research, it is utilized as a reagent for studying reaction mechanisms and developing new organic compounds. Its properties also make it suitable for use in corrosion inhibitors and as a chemical additive in certain industrial processes.