[Jewelry making - Article 00123] - Re: [Orchid] Ferric chloride

[John Burgess]

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    G'day; Ferric chloride will etch copper easily, but I don't think it
    would be any use for etching silver. The act of etching is to use the
    non metallic ion (example, chloride, nitrate)  to dissolve the metal
    to be etched. As silver chloride is insoluble in water, ferric
    chloride won't work. But ferric nitrate will; the silver nitrate so
    formed is indeed soluble. 

-- 
Cheers for now,
John Burgess;   johnb AT ts.co.nz of Mapua, Nelson NZ


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