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Copper plating solution analysis, Potassium Cyanide

I have a problem with an analysis. Can anybody help me with how to test Potassium Cyanide in Copper plating solution?

Avel Berroya
- Harbor City, California

Avel Berroya, you can have the analysis from metalfinishing.com, then go to chemical analysis of plating solutions or control, analysis and testing.

Popat Patel
plating shop
Roseville, Michigan

Ed. note: The Metal Finishing Guidebook is no longer on line, but follow the link to hard copy.

That's not hard. Combine 5.0 ml of plating bath with about 100 ml of distilled water in a flask. Add about a gram of potassium iodide, and swirl the flask until it is dissolved. Then, titrate the mixture with 0.1 N silver nitrate solution. The endpoint is a persistant yellowish white cloudiness. Then, multiply the mls silver nitrate used by 0.347 for "free" potassium cyanide, in ounces per gallon.

Dave Wichern
- The Bronx, New York

April 2, 2009

How to analyse hydroxide in cyanide copper (plating in zinc)?

Olga Tubin
Lab technician - Canada

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