Revisit: Using Alcohol as a precip.

[SilverNitrate]

Yes isopropyl alcohol (IPA) will precipitate gold from AR solution. However I makes an AR solution with 50% copper and gold as I dissolve karat gold. Not having access to analytical instrumentation; along with the precip of gold is a precip of a combined copper, possibly a covalently bonded copper organic acid.
I assume that ANY alcohol, aldehyde, and some keytones an acids (acetic acid wont but diacetic acid does) will drop gold. But however these substances may drop out PGMs. When I tried oxalic (diacetic) acid on a copper AR sol'n a very slimey combined copper precip ensued. The use of acetone and IPA will however form very irritating acyl-chloride gas therefore this reaction should be done outdoors and away from fumes. The precitpiated gold from one of these drops tend to be very dense and sometimes cyrstalline in nature.
Many times when dropping gold, I use IPA to start the drop then finish with using sodium nitrite (the very sudsing method) and waiting a day or two for the reaction to complete. generally this copper prepip can be cleaned away using either nitric acid or concentrated ammonia water.

 

[johnny309]

Consider the fact that all the chlorine gas isn't drive off from the AR....adding isopropilic ....giving the right temperature,you can produce chlorophorm(gelly which will entrap your gold)....and when you melt the gold powder......

Just a though....

 

[Lou]

Generally it is bad practice to put any organic compounds into aqua regia. It can lead to an explosion.


NO ONE TRY THIS.

 

[Joeforbes]

Also - The nitrates of many metals will form fulminates when combined with Ethanol. Fulminates are EXTREMELY EXPLOSIVE, SHOCK SENSITIVE salts that should be avoided at all costs.

 

[SilverNitrate]

Gold chloride is a near super-acid thus it reacts with many organics before the free mineral acids do. Silver the most dangerous of the fulminates is almost non-present in the AR sol'n.
I wouldn't reccommend the method due to the irritating acyl-chloride. The reaction generates alot of heat and boiling without foaming.

 

[Harold_V]

Gold chloride is a near super-acid thus it reacts with many organics before the free mineral acids do. Silver the most dangerous of the fulminates is almost non-present in the AR sol'n.

As if to say that you'll create *just* an A bomb, not an H bomb?

You should know better than to post ANYTHING that has the potential to be dangerous. I insist that you cease and desist immediately. There will be no further discussion on this issue

Harold