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What chemical for brass and copper polishing/bright dipping?

Q. WE HAVE BRASS & COPPER TUBES IN OUR INDUSTRY.THEY ARE VERY BLACKISH IN COLOUR FOR USING REGULARLY.WE WANT TO CLEAN THEM CHEMICALLY WITHOUT BRUSHING BECAUSE THERE IS WAY TO CLEAN MANUALLY. PLEASE SUGGEST US THE CHEMICALS USED FOR CLEANING OF OLD BRASS & COPPER.

PRASHANT PATIL
MANAGER - INDIA
July 29, 2009

A. Hi, Prashant. There are several possibilities for copper bright dips, but the one I'd certainly try first is sulfuric acid plus stabilized hydrogen peroxide. Contact a local plating chemical distributor. Good luck!

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
July 29, 2009

my business is rubber-to-metal bonding product. when I wash my metal in nitric acid my brass column turned to black; then what can I do?

Jwalant Sheth
sellers - India
April 24, 2011

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