Product name: ferrous sulfate
Molecular formula: FeSO₄·7H₂O
Molecular weight: 278.05
Content: 100% ≥ 91.0
Fe content,% ≥ 19.68
Fineness, 95% pass 0.2mm 
Arsenic(As),% ≤ 0.0003
Heavy metal(in Lead)% ≤ 0.0020
Storage: Please store in cool and ventilated warehouse to keep away from fire and heat sources and direct sunlight.