Tags: Chemical Compound, Chemical Substance.
Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl2. The anhydrous salt is yellow but the more familiar hydrate NiCl2·6H2O is green. In general nickel(II) chloride in various forms is the most important source of nickel for chemical synthesis. The nickel chlorides are deliquescent absorbing moisture from the air to form a solution. Nickel salts are carcinogenic.