... high quality and provide very competitive price. Nickel Sulfate Formula: NiSO 4 .6H 2 O M.W.: 262.86 ... Properties: Green crystals of cubic, specific gravity 2.07, soluble in water, slightly soluble ... , nickel-cadumium battery, organic synthesis, catalyst in painting production, raw material of nickel salt for coloring of metals and additives of reduction dye. Storage ...