| http://www.w3.org/ns/prov#value | - An alkali metal or ammonium zinc citrate, C6 H5 O7 MZn, wherein M is ammonium or an alkali metal, preferably sodium or potassium, is prepared by the reaction of equimolar amounts of ammonium hydroxide or an alkali metal hydroxide, such as sodium hydroxide, with zinc oxide and citric acid.
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