sprengel pump
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hcl/solvent solution
Will a desiccant remove the water from a solution of muriatic acid and a solvent such as diethyl ether or with water still be present?
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Oscilllator
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No. HCl solutions are about 37% HCl absolute tops. Thats 63% water. Dessicant can only be used to remove 1 or 2% water, so that wont work.
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Texium
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Quote: Originally posted by sprengel pump  | | Will a desiccant remove the water from a solution of muriatic acid and a solvent such as diethyl ether or with water still be present?
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Do you mean adding a desiccant to a mixture of HCl, water, and a solvent to leave only HCl dissolved in the
dry solvent? If that is what you're doing, then you might be able to soak up a small amount of the water, but you'd need to use a lot of
desiccant to do so. Also, HCl is considerably less soluble in ether than it is in water, so you won't be able to make as concentrated of a solution.
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bbartlog
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Generally speaking, if you remove all the water by adding a massive quantity of dessicant, you'll end up with HCl gas. Unless that's what you want, or
your other solvent actually has a decent ability to hold HCl in solution itself, you probably don't want to do that. Alcohols/diols do seem to retain
HCl pretty well, so for example if you added aqueous HCl to isopropyl alcohol, you could then add a substantial quantity of a drying agent like MgSO4
and be left with dry-ish HCl in IPA (I have done this). I have no idea about diethyl ether, however. It seems like it would depend on the temperature
and the ratio of HCl to ether.
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DJF90
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| Quote: Originally posted by Oscilllator | | No. HCl solutions are about 37% HCl absolute tops. Thats 63% water. Dessicant can only be used to remove 1 or 2% water, so that wont work.
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Thats not true. You can prepare approx 1M HCl in Et2O by using appropriate quantities of 37% HCl (aq) and Et2O, using MgSO4 to mop up the aqueous
phase. Quite a lot is needed, but it works sufficiently well that theres a paper detailing it (something like JChemEd).
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sprengel pump
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I figured the MgSO4 wasn't drying it out all the way.
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