IRON-CONTAINING SUPERFINE ZINC OXIDE, ITS PRODUCTION AND USE

摘要

PROBLEM TO BE SOLVED: To provide iron-containing superfine zinc oxide capable of completely shielding A-region of ultraviolet rays while utilizing transparent feeling of zinc oxide and suitable for using as a sunburn-preventing cosmetic or a coating material for shielding of ultraviolet rays and to provide a producing method of the iron-containing superfine zinc oxide. SOLUTION: This iron-containing superfine zinc oxide is zinc oxide having 0.01-0.1μm average primary particle diameter and contains 0.1-10wt.% of iron inside the crystal lattice. The iron-containing superfine zinc oxide is obtained by neutralizing an aqueous solution containing a zinc salt and an iron salt with ammonium carbonate or ammonium hydrogencarbonate, filtering, washing and drying the resultant precipitation and burning in an oxidative atmosphere at 300-600 deg.C.