Question

Why ammonium sulphate used for precipitation instead of phosphate salt?

Answer 1

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ammonium sulphate is usee for preparation instead of phospate salt


At low ion concentrations (<0.5 M), the solubility of proteins increases with increasing salt concentration, an effect termed "salting in". ...Ammonium sulfate is commonly used for precipitation because of its high solubility, additionally, it forms two ions high in the Hofmeister series.

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