... . 25kg. Ferrous sulfate monohydrate FeSO4. H2O(feed grade)HG2935-2000Uses:Feed grade Ferrous sulfate monohydrate can be used as iron ... extender in feed. As the key ingredient of ... efflorescence.MAIN APPLICATIONS: Used for agricultural pesticide, fertilizer, feed, pigment , catalyst, decontaminant, antisepticsand magnetic material etc. ...