how to remove residual silver chloride from gold powder

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danielscraper

New member
Joined
Apr 23, 2018
Messages
2
how to remove residual silver chloride from gold powder without dissolving again in AR, can I use dilute nitric for washing?
or how can I make ammonium hydroxide at home at a concentration of 3%?
 
I really did not know that.
and that a small amount of chloride passed through the filter.
Many thanks, my friend.

https://www.youtube.com/watch?v=SSZNXYOX7J4
 
Silver chloride is soluble to some extent in hot concentrated hydrochloric acid, so boiling and decanting while still hot should take care of the AgCl mixed with your gold powder.
 
Dilute ammonia can be prepared by adding caustic soda solution to ammonium chloride. Do it slowly in order to minimize NH3 gassing out
 
Owltech said:
Silver chloride is soluble to some extent in hot concentrated hydrochloric acid, so boiling and decanting while still hot should take care of the AgCl mixed with your gold powder.

This is a much better solution than messing around with Ammonia. It's how I do it.

Then again - dilution/cooling and proper filtering of an AR solution prior to dropping your gold is by far the best solution.
 
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