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Any alternatives to chromic acid in galvanization process?

I am a consultant in the water treatment industry. I have a potential customer whose process is galvanizing sheets of carbon steel. He uses a chromic acid based product for sealing the galvanizing process. He wants to get rid of the chromic acid, but doesn't know if there are any alternatives. Any help would be greatly appreciated.

Brian Yanok
- Washington, West Virginia, USA
2000

2005

Hi did you find a useable alternative to chromic acid, yet? if so I would be interested as to what has been suggested, for another project that I am working on.

For what its worth, I have had acetic acid [on eBay or Amazon] suggested to me but have yet to conduct trials, so can't advise on its effects yet. also the process is not galv so it may differ considerably to your own enquiry.
Any help is appreciated
Kind regards from the UK.

Damian Cottrell
- Birmingham, England

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