Product name |
Ferrous sulfate, heptahydrate |
Specification |
Pharmaceutical grade (USP,BP,EP,CP) |
Molecular formula |
FeSO4·7H2O |
CAS |
7782-63-0 |
H.S. CODE |
2833291000 |
Molecular weight |
278.03 |
Appearance |
Light green blue crystals |
Package |
25KG Woven bags or fiber drums |
Property:
Glaucous crystallization. The relative density 1.897, melting point ℃ into four 64 when water and salt, salt water into ℃ when 65. In the wet air oxidation as alkali type sulphuric acid easy high iron into yellow. Soluble in water, insoluble in alcohol. Aqueous easy oxidation.
Application:
Analytics reagents. DTC, polymerization catalysts. Also used in photoengraving, medium preparation.
Test standard:
Specification |
|||
BP2015 |
USP35 |
CP2015 |
|
Light green blue crystals |
Light green blue crystals |
Light green blue crystals |
|
Assay |
98.0~105.0% |
99.5~104.5% |
98.5~104.0% |
Appearance of solution |
Conform |
|
|
pH |
3.0~4.0 |
|
3.0~4.0 |
Copper |
|
|
Conform |
Arsenic |
|
≤0.0003% |
≤0.0002% |
Chloride |
≤0.03% |
|
≤0.03% |
Iron |
≤0.5% |
|
≤0.5% |
Manganese |
≤0.1% |
|
≤0.1% |
Zinc |
≤0.05% |
|
≤0.05% |
Lead |
|
≤0.001% |
|
Heavy metals |
≤0.005% |
|
≤0.0002% |
Mercury |
|
|
≤0.0003% |
Storage:
Do not store in direct sunlight. Store in a cool, dry area away from incompatible substances.