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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Copper blackening

Sir,

I want to avoid Cu metal blackening can you suggest any method to avoid the same? I want to use a chemical which will not affect human health if ingested accidentally . The item is a copper tube and going to be stored at room temperature (22-25 c). We have tried BTA ,but it is not working properly.

Anil M Chaudhari
- Pune, India
2002

2002

Hello,

I would think a nitrocellulose based lacquer would be safe and offer protection from tarnishing.

Jake Koch
G. J. Nikolas &Co.,Inc.

Bellwood, Illinois

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