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Letter 26120
Hexavalent chrome dangerous after plated
on a part?
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Is hexavalent chrome after it's plated any danger to the person
touching day after day, like a house wife holding a vaccum cleaner
tube on a vaccum?
Debbie C 
Secretary - Stoney Creek, Ontario, Canada
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It's not hexavalent chrome, it's zero valence chrome metal. And
it's not dangerous. The solution that it was plated out of was
hexavalent chromium but that has nothing to do with anything in the
end, Debbie. Some food service items are chrome plated. Gold plated
and silver plated items are plated out of gold and silver cyanide,
which is substantially more toxic than hexavalent chromium, but that
has nothing to do with anything in the end either.
However, decorative chrome plating is always a very thin layer of
cracked chrome over nickel plating and a lot of people have nickel
allergy. So if the contact was prolonged and daily and particularly
if working up a sweat were involved, a nickel allergy is a
possibility.
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Ted Mooney, P.E.
finishing.com
Brick, New Jersey
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