SAM4CH
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Removing NaCl
How can I use new technique to remove "1-2%" of sodium chloride in aqueos solution with another dissolved chemical in the same solution??
What about Membranes?
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hissingnoise
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It's hard to say without knowing what it is you want to purify and how much is in solution. . .
1-2% shouldn't be too difficult.
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SAM4CH
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It is 2% NaCl in water with 550g/L NaClO3!!
I should purfied NaClO3 with out recrystalyzation or washing, I like to use membrane technique..
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hissingnoise
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If it's for pyro, 2% chloride is acceptable. . .
Recrystallisation is the way to go---a hot, saturated solution will deposit fairly pure chlorate.
Or you could use KCl to precipitate KClO3.
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not_important
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I've not heard of membranes that give good selection of chloride vs chlorate, at least not afforable ones. This is a good example where
recrystallisation would be the preferred method, just draw the solubility curves and see why.
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Rich_Insane
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Considering how small the impurity is (I don't know your use, however), I think that recrystallizing the hot solution would be the way to go.
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