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Chemical formula or substitute for benzotriazole

Q. You suggested using benzotriazole for preventing copper from oxidation and also increasing its shine. Can you give its chemical formula as it is not readily available in the market, else give its substitute.?

vaibhav sondhi
cables - Delhi, India.
2000

Our Laser HFP is a triazole based copper anti-tarnish that is available for export.

Dan Brewer
chemical process supplier - Gurnee, Illinois
2000

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Ed. note: most metal finishing suppliers offer corrosion inhibitors for copper based on benzotriazole.

But benzotriazole is readily available; ask your chemical supplier for an anti-tarnish. citric acid [on eBay or Amazon] is also used for this purpose.

James Totter, CEF
- Tallahassee, Florida
2000

December 15, 2018

Benzotriazole

Q. Sir,
Can anybody suggest a cheap substitute for copper inhibitor benzotriazole?

akash sharma
- ajmer, rajastha India

A. Hi Akash. We added your question to a thread where James proposes citric acid as a possible substitute. It may be a satisfactory substitute in some ways for some applications, but will be wholly unsatisfactory for others. Please get back to us after you test it. Good luck.

Regards,

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

January 7, 2019

A. Tolyltriazole is about as effective. Sometimes it is a little more expensive, sometimes a little less expensive. There is no cheap effective substitute. But if you want something cheap and accept a significant reduction in performance you could try triethanolamine or a similar compound.

Tom Rochester
CTO - Jackson, Michigan, USA
Plating Systems & Technologies, Inc.

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December 2018

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