Offwhite or light blue powder It is used as nutrition supplement, fruit and vegetable chromogenic reagent 1,Chemical Name: FERROUS SULFATE2,Molecular Formula : FeSO43,Molecular Weight: 152.02CAS: 17375-41-65,Character: Gray and turquoise single monoclinic system crystalline powder or granule. It’s inodorous, taste salty. It easily weathers in dry air. It is easy to oxidize to brown yellow ...