Where would I look to find out about “contact” toxicity of patinas
once they are fixed to the metals?
I’m interested in whether heat patinas on copper or bronze are
possibly toxic (contact toxicity)through long-term wear (like on a
I’d also like to find out if blackened brass (via the stuff used on
gun barrels) might possibly be toxic (contact toxicity).
I would be treating the patinas with Renaissance Wax or Johnson’s
Paste Wax to protect the surface, but long term wear will obviously
wear down through and expose the patina to skin contact. (I’m more
concerned here about the people wearing the items than the patina
Thanks for any help.