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. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. 

Nickel(II) chloride hexahydrate, 99.9% trace metals basis

Nickel(II) chloride hexahydrate, ReagentPlus®

Nickel(II) chloride hexahydrate, BioReagent, suitable for cell culture

Nickel(II) chloride hexahydrate, puriss. p.a., ≥98%

Nickel(II) chloride hexahydrate, for analysis EMSURE® ACS

Nickel(II) chloride hexahydrate, 99.999% trace metals basis