... 005--Water insolubles,% ≤0.01-- 2.Use:1) mainly used as fertilizer ammonium sulfate, applied to a variety of soil and crops ... , filtration, evaporation, cooling crystallization, centrifugal separation, drying. Used as food additives, as dough conditioner, yeast nutrients.4 )used in biochemistry, common ... a safe place waste disposal sites agriculture grade nitrogen fertilizer N21% ammonium sulphate