Purification of 18k Gold

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  • Опубліковано 22 гру 2024

КОМЕНТАРІ • 9

  • @experimental_chemistry
    @experimental_chemistry Рік тому +1

    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.

    • @user255
      @user255 Рік тому

      I think nitrates would work too.

    • @experimental_chemistry
      @experimental_chemistry Рік тому

      ​@@user255
      Yes, it does, but the silver and copper present, too.

    • @integral_chemistry
      @integral_chemistry  Рік тому

      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.

    • @experimental_chemistry
      @experimental_chemistry Рік тому

      @@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.

  • @LucyL00
    @LucyL00 Рік тому +1

    This was cool!

  • @dirtyblueshop
    @dirtyblueshop Рік тому +1

    Bet it’ll make a great shimmer watercolor as a pigment 😏😅

  • @7hunderstorm242
    @7hunderstorm242 Рік тому +2

    Where do you get that gold broken jewlery tho ? 🤨

    • @integral_chemistry
      @integral_chemistry  Рік тому +1

      Usually random friends.. I don't have a reliable source, and this kind of thing is ALWAYS overpriced on ebay.