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Zinc white trivalent

what is the difference between zinc white & zinc white triavalent.

Nagalingam Mahalingam
Customer - Chenaai, Tamilnadu, India
July 22, 2008

Hi, Nagalingham. "Trivalent" means the conversion coating after the zinc plating is trivalent chromium rather than hexavalent, which is necessary for RoHS compliance.

But this terminology is loose and imprecise, so one cannot put a sharp point on it. In fact, this terminology is even sloppier than usual because the word 'white' is used as a substitute for 'clear'. It only makes a poor description even worse :-)

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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July 22, 2008

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