CAS Registry Number: 7720-78-7 | Formula: FeSO4·7H2O
Molecular formula: FeSO4·7H2O
CAS number: 7720-78-7
Appearance: light green crystals
Properties: Soluble in water and glycerol, insoluble in ethanol. At 25℃, the solubility is approximately 22.8g/100g water. The relative density is about 1.897 (15℃), and the melting point is 671℃ (with decomposition). The aqueous solution is acidic, and the pH value of a 10% solution is approximately 3.7. Ferrous ions have reducibility and are easily oxidized to brownish-brown basic ferric sulfate in humid air. Heating causes the loss of crystalline water, losing 3 molecules of water at 70-73℃, and transforming into basic ferric sulfate above 156℃.
Uses: In industry, it is mainly used as a water purifier, disinfectant, iron catalyst catalyst, feed additive, and for processing one-water ferrous sulfate, etc. In agriculture, it is used as fertilizer, herbicide, and pesticide.
Packaging: Inner liner is a transparent plastic bag, outer covering is a plastic woven bag. Each bag weighs 25 kilograms or 50 kilograms, or 1000 kilograms in a woven bag.
|
INDEX |
STANDARD |
RESULT |
|
FeSO4.7H2O % ≥ |
98 |
98.11 |
|
Fe % ≤ |
19.5 |
20.9 |
|
Pb % ≤ |
0.002 |
0.0002 |
|
APPEARANCE |
Light green crystal |
Light green crystal |
|
RESULT |
QUALIFIED |
|