Zinc Hydrogen or oxide is soluble in an aqueous solution of zinc chloride, and when a concentrated solution is diluted with water, a basic salt, an oxychloride of zinc is precipitated. The Formation of zinc oxychloride is also effected by adding water to solid zinc chloride or by diluting a concentrated solution of zinc chloride. An examination of the literature showed that up to the present time about sixteen different oxychlorides of zinc have been described by various workers. Writing the molecular ratio in the order ZnO: ZnCl₂: H₂O, the following compounds have been reported:-