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Wednesday 3 May 2023

Is there Miscibility of Aqueous Saturated Calcium Chloride Solution with Common Organic Solvents



The solubility of the cheap inorganic salt calcium chloride in methanol is 29.2 g/100 g at 20 °C. That means that a liquid phase is created that is 22-23% inorganic salt.

What would happen if this liquid phase were layered with organic solvents such as toluene, acetone, methyl ethyl ketone, methylene chloride, chloroform etc.? How many phases would there be? I don’t know but I would guess that some solid would precipitate. Some composition comprising a calcium salt of some type would be less soluble in methanol diluted by the other organic solvent that had been added.

If we filter this milky mess through Celite to remove whatever is solid, would we get two clear immiscible phases?


If the organic solvent had contained organic substrates in it, depending upon those substrate’s functionalities, would any functionality types be removed in the filtered solid or in the methanolic-calcium chloride?


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