Chemical Forums
Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Sonamjain on January 28, 2019, 09:05:40 AM
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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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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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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.