I'm an artist, so no silver plating or chemistry background. I would like to ask for help please to able to start silver plating at home. I would like to use those formulas, which is not using cyanide!
I was reading about this on the internet and I could find a few article and publications about this:http://infohouse.p2ric.org/ref/18/17422.pdfhttp://metalfinishing.epubxp.com/i/49721/244
Both of them using about the same amount of:
silver chloride 30-50g/l
sodium thiosulphate 500g/l
sodium or potassium metabisulphate 30g/l
for pH: sodium bisulphte or hydroxide
I found on the internet, the only problem with this is the poor adhesion, so need to do pretreatment, like use silver strike or for a few min in ammonium thiocyanate.
Ammonium thiocyanate will produce on the polished copper plate: copper thiocyanate. This process will produce any cyanide? During this is any cyanide will go in to the air? What will happen if I can't or can wash it properly and after this I will put the copper plate in to the thiosulphate solution? Is any cyanide will be in the air?
Is any other oxidizer will be fine or need to have copper thiocyanate on the plate for good adhesion?