As an Amazon Associate & eBay Partner: we earn from qualifying purchases
Mr. Rogers: "Look for the Helpers. You'll always find people who are helping."

finishing.com -- The Home Page of the Finishing Industry

-----

Cyanide concentrations in zinc-CN plating?

I'm a student at the University of MN, investigating waste minimization alternatives in the metal plating industry. My question is: What is the typical range of cyanide concentrations (or cyanide solution concentrations) in zinc cyanide plating baths? Thanks for your help.

Janelle Zimba
2000

2000

Per the Metal Finishing Guidebook:

Low cyanide: 1.5 - 2.5 oz/gal
Mid cyanide: 3.5 - 6.0 oz/gal
High cyanide: 11.0 - 14.0

But the direction of movement has been downward such that the traditional low cyanide is probably today's actual mid range.

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: