Elimination of anode hydrogen cyanide formation in trivalent chr

Details Elimination of anode hydrogen cyanide formation in trivalent chr Elimination of anode hydrogen cyanide formation in trivalent chr

1979-10-18

1981-03-17

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 51, C25D 306, C25D 356

Patent

active

042565480

ABSTRACT:
Generation of hydrogen cyanide at the anode in a chromium (III) - thiocyanate plating bath, resulting from oxidation of thiocyanate anions, is prevented by an additive to the electroplating solution which oxidizes at the anode in preference to the thiocyanate, and whose reaction products will not adversely affect the cathode reaction. Such an additive is potassium iodide.

REFERENCES:
patent: 4062737 (1977-12-01), Barclay et al.
patent: 4141803 (1979-02-01), Barclay et al.
patent: 4161432 (1979-07-01), Barclay et al.

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