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Letter 35019
Cyanide free silver plating for hotel epns
wares [India]
+++++
Please show me the way to a cyanide free silver plating for hotel
epns wares.
thank you
C.K.Ravi
plating shop - Hyderabad, India
+++++
Simple cyanide free silver plating bath:
4o gm silver chloride
2oo gm potassium ferrocyanide(1% of potassium cyanide toxicity)
2o gm potassium carbonate
1 lit water
stainless steel or silver anodes
6o-8o C,1o-15 A/sq.ft
According to Fischer,Weiner/
Precious Metal Plating , Teddington 1964.
or you can use pyrophpsphate bath:
1oo gm potassium pyrophosphate
25 gm ammonium carbonate
25 gm silver pyrophosphate
1 lit water/SS anodes
According to Galvanotehnika blagorodnih i redkih
metalov(Electroplating of precious and rare metals),Leningrad
1970.
Good luck!
Goran Budija
- Zagreb, Croatia
February 15, 2006
I would like to thank you for this response. Delay was due to not
opening the site.
Regards.ravi
C.K.Ravi
silver plating on hotel EPNS Wares - Hyderabad, India
March 6, 2006
Dear Mr.Goran,
Thank you indeed.
The mentioned process landed me in some trouble.
I would be thankful if really there exixts silver plating without
cyanide.
regards and thank you.
Ravindran
freelance - Hyderabad
March 6, 2006
Just last week I attended a presentation on "Alkaline Non-Cyanide
Silver" by Eric Olander of EPI,
Ravindran. Cyanide formulas still account for 95 percent of all
silver plating, and there is no decorative non-cyanide formulation
because no brighteners are compatible. But maybe you could try their
non-cyanide silver and see what you think.

Ted Mooney, P.E.
finishing.com Inc. - Brick,
NJ
March 10, 2006
Dear Ted,
Thank you for the information.
So it is all a hoax that a non cyanide silver plating ever
exists.
Then what is available other than the ferocious cyanide based silver
plating,because it was the world body from USA who had come to Delhi
etc in 1999 and successfully paved the way for the closure of all the
plating units based in the star hotels without giving any
alternative.The stainless steel cutlery etc seems more of a large
open air dining outlet,there is no glamour which otherwise existed in
the hotel even if the service was not good.
Regards.
ravi
ckravi
freelance - hyderabad
March 10, 2006
Dear Mr. Ravi,
You are making reference to things that I unfortunately have no
knowledge of, like this world body from USA visiting, electroplating
within the star hotels, etc. But maybe I can guess that these hotels
formerly did their own cyanide silver plating and someone decided
that it was not safe for hotels to have cyanide on site.
Certainly their are electroplating jobshops in your area, however,
who can do cyanide silver plating of silverware at their shops. This
would allow you to once again use fine silver service without the
patrons of the hotel needing to worry about dangerous industrial
processes being conducted within the hotel.

Ted Mooney, P.E.
finishing.com Inc. - Brick,
NJ
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