Copper(I) chloride is an inorganic chloride of copper in which the metal is in the +1 oxidation state. It has a role as a molluscicide and an agrochemical. It is an inorganic chloride and a copper molecular entity. It contains a copper(1+).

1. Catalyst: Catalyst for organic synthesis, denitrification of nitrocellulose.
2. Metallurgy: Copper smelting, electroplating, metal purification.
3. Chemical industry: Decolorizing agent, desulfurizer, bactericide.
4. Gas purification: Absorbent for carbon monoxide and acetylene.