Ferrous Sulfate Heptahydrate has applications in the agricultural industry due to its high iron solubility, and is widely used as a reagent in analytical chemistry for its resistance to oxidation. Ferrous Sulfate Heptahydrate can be used as moss control and micro-nutrients in the fertilizer industry. Uses of ferrous sulfate heptahydrate range from being mainly used in the manufacture of iron salt, ink, magnetic iron oxide, water purifying agent, paint pigment, iron catalyst, as coal dye, tanning agent, bleaching agent ,component in weed killers, wood preservative, compound fertilizer additive, feed , and processing of ferrous sulfate monohydrate. Ferrous sulfate heptahydrate is used as a reducing agent for decolorization and flocculation. Sales Specs Appearance: Bluish green crystals Purity (%): 98 Min. Iron (Fe) (%): 19.7 Min. Arsenic (As) (ppm): 10 Max. Heavy Metal (as Pb) (ppm): 20 Max. CD (ppm): 10 Max. Packing 50 lb bag, 44 bags per pallet