KupariIIkloridi

KupariIIkloridi, also known as copper(II) chloride, is a chemical compound with the formula CuCl2. It is an inorganic salt that exists in both anhydrous and hydrated forms. The anhydrous form is a yellowish-brown solid, while the hydrated form, most commonly copper(II) chloride dihydrate (CuCl2·2H2O), is a blue-green crystalline solid.

Copper(II) chloride is soluble in water, forming a blue solution. It is also soluble in ethanol and acetone. The compound exhibits interesting chemical properties due to the presence of copper in the +2 oxidation state. It is a moderately strong oxidizing agent.

In terms of applications, copper(II) chloride has several uses. It is employed as a catalyst in various organic synthesis reactions, particularly in the production of chlorine and in certain oxidation processes. It also finds application as a pigment in glass and ceramics, imparting blue and green colors. Historically, it has been used as a mordant in dyeing textiles. In pyrotechnics, it can be used to produce blue and green flames. It is also used in some wood preservatives.

Copper(II) chloride can be synthesized by reacting copper metal with chlorine gas, or by reacting copper(II) oxide or copper(II) hydroxide with hydrochloric acid. The hydrated form is readily obtained by dissolving copper(II) chloride in water and allowing it to crystallize. When heated, hydrated copper(II) chloride loses its water of crystallization to form the anhydrous compound.