Stabilized alkali metal bisulfite or sulfite-catalyzed solutions
AssigneeBetz Laboratories, Inc.
InventorsWalter M. Lavin, James I. McFarlane, Dennis L. Rose
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Abstract
The present invention is directed to a method of stabilizing aqueous solutions containing alkali metal sulfite or bisulfite and a catalyst therefor. The catalyzed sulfites which are of primary concern in the present instance are those which are used to inhibit or control oxygen corrosion in water treatment, particularly boiler water treatment.
Claims15
A method for stabilizing during storage an aqueous solution of an alkali metal sulfite or bisulfite containing a water-soluble cobalt catalyst without affecting the catalytic effect of the cobalt catalyst, which solution with an increase of pH will experience the precipitation of said cobalt as its sulfite salt, said method consisting essentially of incorporating in said solution a stabilizing amount of a compound having the structural formula:
- ##STR2## R is a lower alkyl of from 1 to 3 carbon atoms and wherein M is selected from the group of hydrogen, sodium, potassium and ammonium.
A method for stabilizing an aqueous solution of an alkali metal sulfite or bisulfite containing a water-soluble cobalt catalyst, which solution is being stored in a vented storage tank, said method comprising incorporating in said solution a stabilizing amount of a compound having the structural formula:
- ##STR5## R is a lower alkyl of from 1 to 3 carbon atoms and wherein M is selected from the group of hydrogen, sodium, potassium and ammonium.
Dependencies are inferred from the claim text.