[CH:1]1[CH:2]=[CH:3][N+:4]([O-:8])=[C:5]([SH:7])[CH:6]=1.S([O-])([O-])(=O)=O.[Zn+2:14].[Cl-].[Zn+2].[Cl-].C([O-])(=O)C.[Zn+2].C([O-])(=O)C>O>[CH:1]1[CH:2]=[CH:3][N:4]([O-:8])[C:5](=[S:7])[CH:6]=1.[CH:1]1[CH:2]=[CH:3][N:4]([O-:8])[C:5](=[S:7])[CH:6]=1.[Zn+2:14]A method for producing submicron-sized particles of zinc pyrithione, comprising reacting a pyrithione or a water-soluble salt of pyrithione and a water-soluble zinc salt selected from the group consisting of zinc sulfate, zinc chloride, zinc acetate, and combinations thereof, in a turbulent flow reactor generating pulverizing forces, said turbulent flow reactor maintained at a pressure of from about 18,000 psi to about 23,000 psi and a temperature of from about 0° C. to about 23° C., said reaction producing submicron-sized particles of zinc pyrithione.
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