
8-Hydroxyquinoline copper salt (copper quinolate, oxine-copper) is a chelated copper compound appearing as a yellow to green odorless powder. It is an efficient, broad-spectrum and low-toxicity organic copper fungicide and preservative, and is also used as a catalyst, metal corrosion inhibitor and intermediate in pharmaceutical and agrochemical production. in water. In acidic solutions, it is colorless, while in basic solutions, it turns pink to purple.