Iron is an essential component to construct hemoglobin, myoglobin and cytochrome of animals Ferrous sulphate Iron is an essential component to construct hemoglobin, myoglobin and cytochrome of animals. Iron plays very important roles in hematopoiesis, transport of oxygen and biological oxidation process of animals. Lack of iron can lead to anemia, pale skin, vigor decline and unsightly color, luster of skin and fur. Commodity Specification Property FeSO4.H2O FeSO4.H2O 91%min Fe 30.0%min Pb 0.002% max As 0.0005% max 95% pass 420um sieve White grey powder or crystal FeSO4.7H2O FeSO4.7H2O 98%min Fe 19.7%min Pb 0.002% max As 0.0005% max Blue green crystal