Copper (II) acetate hydrate is greenish-blue crystalline powder with a faint vinegar smell. It can used as a fungicide, catalyst for organic reactions, ceramics precursor, pigment for ceramics, insecticide, mildew preventive, preservative for cellulose materials, stabilizer for polyurethanes and nylons, corrosion inhibitor, textile dyeing, anti-fouling paints, electrolysis and electroplating processes, flame proofing, printing and photocopying, pyrotechnics, and fuel additive. Marines, fisherman, aquarists, and hydrologists once used copper acetate used as a shark repellant (Richard L. Tuve, Shark Repellant, et.al., US2458540A).
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