Characteristic

 

Copper(II) chloride is the chemical compound with the chemical formula CuCl₂. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.

Chemical formula:CuCl₂•2H₂O

Molar mass:170.48 g/mol 

Appearance:blue-green solid 

Odor:odorless

Density:2.51 g/cm³ 

Melting point:100 °C (dehydration of dihydrate)

Solubility in water:70.6 g/100 mL (0 °C);75.7 g/100 mL (25 °C);107.9 g/100 mL (100 °C)

Solubility methanol:68 g/100 mL (15 °C)

ethanol:53 g/100 mL (15 °C) soluble in acetone

Magnetic susceptibility (χ):+1080·10⁻⁶ cm³/mol

Crystal structure:distorted CdI2 structure

 

Application

 

Copper(II) chloride is used as a catalyst for organic and inorganic reactions, mordant for dyeing and printing materials, pigment for glass, ceramics, as wood preservative, as disinfectant, and as a catalyst in the output of chlorine from hydrogen chloride. It is likewise employed in the oil industry as a purifying agent, in the manufacture of laundry marking inks, in metallurgy to recover mercury from ores, in refining copper, silver and gold, in tinting baths of iron and tin, in photography, in pyrotechnics, and to get rid of lead compounds from gasoline and oils.