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Precipitate the Gold with AURA RXSOL-68-1541-832 :
Recovere all gold from working area then dissolve all into Aqua Regia Solution. Leave this solution for 10 -12 hrs to complete precipitation, then Filter it out. And addition of AURA RXSOL-68-1541-832 works well to precipitate gold from acid gold plating baths which contain HAuCl4 solution,
Aqua Regia : 3 HCL+1 Nitric Acid.
After addition of AURA RXSOL-68-1541-832 you can practically see big brown spongy ball like gold getting precipitated & once all the gold in the solution has precipitated the solution at the top has lot of white foam, which indicates the end of precipitation. Finally neutralise the solution with 25% urea solution. This will give you the necessary result in recovering pure gold.
We let the solution stand overnight to settle down & recover gold from it by washing it with water.
Don't add urea in gold chloride solution.
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