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Author: Subject: How to make HAuCl4.3H2O?
beerwiz
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[*] posted on 10-11-2019 at 23:21
How to make HAuCl4.3H2O?


Every time I try to make HAuCl4.3H2O I get the red crystalline (red garnet looking) AuCl3. After all the Au is dissolved, I heat the AR solution in a sand bath at 225°C to evaporate it. The temperature must be too high and it converts to the red AuCl3 instead. Although I've tried evaporating at 100°C and it still turns to blood red AuCl3.

Any suggestions on how to get perfect and dry HAuCl4.3H2O crystals quickly?

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Deathunter88
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[*] posted on 11-11-2019 at 08:05


Place in a sealed bag of NaOH.
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beerwiz
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[*] posted on 11-11-2019 at 18:46


How long does it take to dry up with NaOH in a sealed bag?
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