8-Hydroxyquinoline is primarily used as a chelating agent to form stable complexes with metal ions, making it valuable in analytical chemistry for the detection, separation, and quantification of metals. It serves as a key intermediate in the synthesis of pharmaceuticals, including antifungal and antibacterial agents such as clioquinol and iodoquinol. In the dye and pigment industry, it binds with metals to produce vibrant, stable colors. It is employed in corrosion inhibitors to protect metals from degradation in industrial settings. Additionally, it acts as a preservative in wood treatments and coatings to inhibit fungal growth. The compound also functions as a reagent in organic synthesis and as a stabilizer in polymer manufacturing. Derivatives of 8-Hydroxyquinoline are used in agriculture as fungicides and in cosmetics for antimicrobial properties, but the parent compound is mainly utilized in chemical and analytical applications.