Sodium 3-Nitrosalicylate is primarily used in organic synthesis as an intermediate for the preparation of various chemical compounds. It plays a role in the development of dyes and pigments, contributing to the color properties of these materials. Additionally, it is utilized in research laboratories for studying nitration reactions and the behavior of nitro-substituted aromatic compounds. Its application extends to the pharmaceutical industry, where it serves as a building block for the synthesis of certain active pharmaceutical ingredients. In analytical chemistry, it can be employed as a reagent for specific detection and quantification processes.