is highly effective bactericide, fungicide and algaecide for use in controlling growth of micro-organism found in paper mills, drilling fluids, secondary and tertiary petroleum recovery, fracturing fluids, work over and completion fluids, flue gas desulphurization thickeners, hydrocarbon fluids storage, beet sugar mills and cane sugar mills. It is also effective for industrial water cooling towers, evaporative condensers, and air washer systems.