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topic 59904

What are Aloxan Salts (in Nickel Acetate Seal after Anodizing)



June 15, 2015

Q. We have a plating specification that seems only one plating company has ever heard of. I'm hoping someone can explain the following spec: Anodize per Mil-A-8625, Type II Class 2 Black Seal for 1/2 Hour using Nickel Acetate and Aloxan Salts for Noted Surfaces

No one seems to know what Aloxan Salts are. Can anyone help?

Sue Schneider
Purchasing Manager - Hamburg, New York, USA


wikipedia
Alloxan

June 2015

A. Hi Sue. I don't know, and I've never heard of it, but my guess is that it is actually "Alloxan" and that some proprietary nickel acetate seal contains/contained it. I think you should focus on changing this spec, not only because of the single-sourcing limitation but because times have changed and we must be leery of using poorly understood and possibly toxic processes.

Regards,

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

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