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Anti-Tarnishing Agent For Copper and Brass Scouring Powder Cleaner

2005

I have formulated a Brass & Copper Scouring Powder Cleaner based on Silica Flour of 80 Mesh plus citric acid ⇦ on eBay or Amazon [affil link] . After cleaning and wiping, black spots and tarnishing takes place within 24 hours of exposure to atmosphere. Can you suggest any anti-tarnishing agent for copper & brass and in what proportion to be added?

Please help.

Thanks.

T.S. VISWANATHAN
CONSULTANT - THANE, MAHARASHTRA, INDIA

There are more than a dozen successful "household name" brass & copper polishes in the U.S.A. You could pick your favorite and reverse-engineer it, or search through expired patents for formulations. My guess is that benzotriazole ⇦ on eBay or Amazon [affil link] would be helpful in your formulation. Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted can be retained for immediate
answers or long term project help
2005

DEAR MR. T.S. VISWANATHAN
ELECTROPLATING BRASS OR COPPER REQUIRES AN OVERCOAT OF ANTI TARNISH DIP.I HAVE USED A WATER SOLUBLE ONE WHICH GIVES A GOOD PLATING LIFE EVEN WITHOUT USING A FURTHER OVERCOAT OF LACQUER. IT IS AVAILABLE IN INDIA.

VIRENDER KUMAR
- New Delhi, INDIA
2005

adv.

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