Copper chloride dihydrate is a widely used inorganic copper fine chemical raw material. In electroplating industry, it is main raw material for acidic copper plating solution, used for decorative copper plating and electroforming process. Organic synthesis takes it as Lewis acid catalyst and chlorinating agent for halogenation, coupling and cyclization reactions of aromatic compounds. In dyestuff field, it serves as dye mordant for textile printing to improve color fastness. It is also applied as feed additive trace copper source, wood preservative and water treatment algaecide. In analytical chemistry, it is standard reagent for anion and reducing substance testing. Anhydrous copper chloride can be prepared via dehydration of this dihydrate product, further used for dehydrating agent and organic reaction catalyst. Large quantity is supplied to electroplating factories, fine chemical plants and reagent manufacturers globally.

GHS:H302,H315,H319,H335,H401;Signal Word:Warning R22,R36/37/38;S26,S36/37/39 Harmful if swallowed, irritant to skin, eye and respiratory tract. Skin contact brings erythema and itch, flush contaminated skin with plenty of running water over 15 min. Crystal dust into eyes causes severe irritation, continuous eye wash ≥15 min and seek medical aid if needed. Inhalation of dust irritates throat and cough; operate under ventilation with nitrile gloves, goggles and dust mask. Toxic to fish and aquatic organism, forbid waste solution direct discharge into natural water. Store apart from food, strong base and active metals to avoid chemical reaction. Waste is disposed as inorganic hazardous waste following local environmental regulations.