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Ammonium Sulfate

CAS #: 7783-20-2

Ammonium sulfate is an inorganic salt with a number of uses.  It contains 21% nitrogen and 24% sulfur.  Ammonium sulfate precipitation is a common method for purifying proteins.  Ammonium sulfate is extremely soluble in water and can make very concentrated solutions, which can “salt out” proteins at particular concentrations.  This provides a convenient and simple means to fractionate complex protein mixtures.

Synonyms: Diazanium sulfate; diammonium sulfate