Nickel Chlorate, Ni(ClO₃)₂

Nickel Chlorate, Ni(ClO₃)₂, may be obtained by double decomposition of aqueous solutions of nickel sulphate and barium chlorate. On concentration rhombic crystals of the hexahydrate, Ni(ClO₃)₂.6H₂O, are obtained, which at 39° C. are converted into the tetrahydrate, Ni(ClO₃)₂.4H₂O. This latter salt melts at about 80° C., but the existence of a dihydrate in the melt, corresponding to the analogous cobalt derivative, has not been ascertained. The solubility of the salt in water is as follows:

Temperature ° C.	8	10	40	48.5	55	65	79.5
Grams Ni(ClO3)2, in 100 grams solution.	52.66	56.74	64.47	67.60	68.78	69.05	75.50
Solid phase	Ni(ClO3)3.6H2O		Ni(ClO3)2.4H2O