Magnesium chlorate refers to inorganic compounds with the chemical formula Mg(ClO3)2(H2O)x.

[4] A more simple method of production is the reaction of barium chlorate and magnesium sulfate: The precipitated barium sulfate is filtered to yield a solution of magnesium chlorate, which when evaporated, yields crystals of the hexahydrate.

[2] As confirmed by X-ray crystallography, the di- and hexahydrates feature octahedral Mg2+ centers.

[1] Magnesium(II) chlorate is used as a powerful desiccant and a defoliant for cotton, potato, and rice.

[5] Magnesium chlorate is an oxidizer and can in principle form explosive mixtures.