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Author Topic: Removing calcium chloride impuroty  (Read 380 times)

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Sonamjain

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Removing calcium chloride impuroty
« on: January 28, 2019, 03:05:40 AM »

I am making magnesium chloride hexahydrate. I need to remove calcium chloride from it. It is present upto 1000 ppm. I need it below 100 ppm. How do I do it. Will sodium icalate or sodium bicarbonate help?
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chenbeier

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Re: Removing calcium chloride impuroty
« Reply #1 on: January 29, 2019, 10:37:51 AM »

By Adding of other salts zoe van precipitate the Calcium, but you exchange the Calcium by sodium and carbonate.

Normaly crystallisation processes are used.
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AWK

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Re: Removing calcium chloride impuroty
« Reply #2 on: January 29, 2019, 01:12:44 PM »

Calcium and magnesium chlorides hexahydrates are probably isomorphous. Check at which temperature they form different hydrates. Crystallization at controlled temperature range may solve your problem.
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