Ammonium iron (II) sulfate hexahydrate Analytical Grade ACS, USP, NF 500 g

Appearance Greenish blue crystals / crystalline powder

Assay 99.0-101.5% Substances insoluble in water (H2O) 0.01% Phosphate (PO4) 0.003% Calcium (Ca) 0.005% Copper (Cu) 0.003%

Iron III (Fe (III)) 0.01% Manganese (Mn) 0.01% Magnesium (Mg) 0.002% Potassium (K) 0.002% Sodium (Na) 0.02%

Substances not precipited by NH4 0.05% Zinc (Zn) 0.003%