Cupric chloride, also known as copper(II) chloride, is a chemical compound with the formula CuCl2. It appears as a blue-green solid and is soluble in water, forming a blue solution. This compound is commonly used in various applications, including as a catalyst in chemical reactions and in the production of dyes and pigments. In addition to its industrial uses, cupric chloride plays a role in laboratory settings, particularly in the synthesis of other copper compounds. It can also be used in the preservation of wood and as a reagent in analytical chemistry.