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Author: Subject: Tetraamminecopper (II) sulphate solubility

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[*] posted on 13-2-2020 at 11:56
Tetraamminecopper (II) sulphate solubility

I was wondering about the solubility of Tetraamminecopper (II) sulphate in isopropanol. Ethanol is typically used to precipitate the compound out of solution but I have much purer and more high-quality isopropanol and would like to use it instead. I could not find any information on the solubility of the compound in isopropanol.
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[*] posted on 13-2-2020 at 12:01

The coordination complex will be less soluble in isopropanol than in ethanol (almost any water-soluble ionic compound will be less soluble in isopropanol than ethanol). However, you may find that it oils out when you add isopropanol, as the water may have a higher affinity for the complex than the alcohol. So don't add too much of it.

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[*] posted on 13-2-2020 at 13:27

I have used both 91% isopropanol and acetone to precipitate this complex, acetone is superior but they both definitely work.

[Edited on 2-13-2020 by Amos]
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