Product name |
Ferrous sulfate, heptahydrate |
Specification |
Reagent grade |
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:GB/T 664-2011
Test items |
Specification |
||
AR grade |
CP grade |
||
Appearance |
Light green blue crystals |
Light green blue crystals |
|
Assay |
99.0-101.0% |
98.0-101.0% |
|
Water insoluble |
≤0.005% |
≤0.02% |
|
Chloride |
≤0.001% |
≤0.005% |
|
Total nitrogen |
≤0.001% |
|
|
Phosphate |
≤0.0005% |
≤0.002% |
|
Arsenic |
≤0.0002% |
≤0.0002% |
|
Manganese |
≤0.05% |
|
|
Ferric |
≤0.02% |
≤0.1% |
|
Copper |
≤0.002% |
≤0.01% |
|
Zinc |
≤0.005% |
≤0.02% |
|
Lead |
≤0.002% |
≤0.005% |
|
Substances not precipitated by ammonium |
≤0.05% |
≤0.2% |
Storage:
Do not store in direct sunlight. Store in a cool, dry area away from incompatible substances.