White to light yellow crystalline powder with a characteristic phenolic odor. It is a monoprotic bidentate chelating agent.
8-Hydroxyquinoline, also known as oxine or 8-quinolinol, is an organic compound with the chemical formula C9H7NO and molecular weight of 145.16 g/mol. It is a heterocyclic compound featuring a quinoline ring with a hydroxyl group at the 8-position. This compound is best known as a chelating agent that forms stable complexes with various metal ions. It has broad applications in analytical chemistry, medicine, agriculture, and materials science. Its derivatives are widely used as antimicrobial agents and in organic electronic materials.