June 07, 2020, 03:20:19 AM
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Topic: Turning chromium chloride into chromium citrate  (Read 415 times)

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Offline some dude

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Turning chromium chloride into chromium citrate
« on: April 13, 2020, 05:31:14 AM »
Hi,

I want to make chromium (III) citrate out of chromium (III) chloride. I would dissolve CrCl3 in NaOH solution to get Cr(OH)3 as a precipitate. Wash the precipitate with water and mix it with citric acid. Would that work? Is there an easier way?

Offline chenbeier

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Re: Turning chromium chloride into chromium citrate
« Reply #1 on: April 13, 2020, 08:30:34 AM »
This should work, easier way not known.

Offline some dude

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Re: Turning chromium chloride into chromium citrate
« Reply #2 on: April 13, 2020, 08:48:22 AM »
Thanks, I just had a thought: In the case of water soluble CrCl3 hexahydrate, wouldn't it be possible to just mix it directly with citric acid in water to get chromium citrate and vaporize the residual water and HCl?

Offline chenbeier

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Re: Turning chromium chloride into chromium citrate
« Reply #3 on: April 13, 2020, 01:44:47 PM »
Which acid is the stronger one. The opposit would happen, if you add HCl to chromiumcitrate you would get chromium chloride and citric acid.

Offline some dude

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Re: Turning chromium chloride into chromium citrate
« Reply #4 on: April 20, 2020, 08:00:28 AM »
Ok, so I made chromium hydroxide using NaOH, then washed it several times and dried it. Apparently, I dried it too hot (in a stainless steel pot on the oven), as the chromium hydroxide had a nice turquoise color and now the bottom part of it turned black. Question is what is that black stuff and can I still turn it into chromium (III) citrate?

Offline some dude

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Re: Turning chromium chloride into chromium citrate
« Reply #5 on: April 21, 2020, 12:30:35 AM »
I just put some chromium hydroxide into dissolved citric acid... apart from a tiny bit of fizzing at the beginning, nothing happened. Do I need to increase temperature, pressure, a catalyst? Any ideas?

Offline shchavel

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Re: Turning chromium chloride into chromium citrate
« Reply #6 on: May 01, 2020, 08:12:22 AM »
Hi, I think it was a bad idea to heat Cr(OH)3 for drying. because it can turn to CrO(OH) by heating near 100C. Try to dry your perticipante with out heating.

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