In biochemistry it is used for purification proteins via ammonium sulfate precipitation method. Ammonium sulfate is used in agriculture as fertilizer; it is a slow releasing nitrogenous fertilizer and a rich source of sulphur nutrient. It is employed as a dough conditioner in bread products. It finds use as raw materials for various chemical products such as dyes and pharmacetical products. It is a component of flame-proofing agents and fire extinguisher powder.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.