In places where someone isn't legally allowed to use conc. nitric acid, it can be replaced by alkali nitrite, iodide/iodate or simple hydrogen peroxide. In mixture with HCl all three reagents are able to dissolve gold.
I actually wasn't aware that simple peroxide would work, but I have done HCl and sodium nitrate a few times before, which I've heard called "Poor man's aqua regia". I've also had some success with chlorate and cyanide.
@@integral_chemistry No, conc. HCl and nitrite is the only original aqua regia "light". 😄 But of course all other mentioned combinations with HCl work, too - incl. chlorate, which is also restricted in the EU to a max. conc. of 40 % in all kind of inhibitant mixtures.
In places where someone isn't legally allowed to use conc. nitric acid, it can be replaced by alkali nitrite, iodide/iodate or simple hydrogen peroxide. In mixture with HCl all three reagents are able to dissolve gold.
I think nitrates would work too.
@@user255
Yes, it does, but the silver and copper present, too.
I actually wasn't aware that simple peroxide would work, but I have done HCl and sodium nitrate a few times before, which I've heard called "Poor man's aqua regia". I've also had some success with chlorate and cyanide.
@@integral_chemistry
No, conc. HCl and nitrite is the only original aqua regia "light". 😄
But of course all other mentioned combinations with HCl work, too - incl. chlorate, which is also restricted in the EU to a max. conc. of 40 % in all kind of inhibitant mixtures.
This was cool!
Bet it’ll make a great shimmer watercolor as a pigment 😏😅
Where do you get that gold broken jewlery tho ? 🤨
Usually random friends.. I don't have a reliable source, and this kind of thing is ALWAYS overpriced on ebay.