[log in to unmask] writes:

*****You ought to be able to get most of this information from your supplier
of the KAu(CN)2, however I will throw in a few items.

<< How to analyze the gold and cyanide concentration in  potassium gold
cyanide KAu(CN)2 ?
  We use sulfuric acid to analyze gold now.

****You are analyzing for Gold content now in your plating bath, you should
be able to to the same for the pure salts.

 But when we heat the soltion , there are a lot of fume.
 Are there any other mehtod to avoid producing fume?

*****Cyanide is a REAL weak acid, and when you put the salts into the plating
bath, which, if I recall correctly, has a pH less than 6,  the Cyanide
reverts (at least partly) to the acid, HCN, (yes, that is the same stuff that
is used in gas chambers to kill people!) but the levels are so low, that it
remains mostly in solution, UNTIL you heat it, when it starts to come out.
This is the nature of the situation, and unavoidable.  Ventilate well....

 Please give me the physical and chemical properties about potassium gold
cyanide. >>

****Why not get this from the supplier?  What else do you want to know?

Rudy Sedlak
RD Chemical Company

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