Ferrous sulfate powder
- Indicator
- Chemical name：Ferrous Sulfate
- Formula：FeSO4.H2O
- Molecular weight：169.92
- Appearance: Cream powder, anti-caking ,good fluidity
Physical and Chemical indicator：
| Item | Indicator | Indicator |
| FeSO4.H2O granular ≥ |
| 88.2 |
| FeSO4.H2O powder ≥ | 91.3 |
|
| Fe 2+Content, % ≥ | 30 | 29 |
| Total arsenic (subject to As), mg / kg ≤ | 2 | 2 |
| Pb (subject to Pb), mg / kg ≤ | 5 | 5 |
| Cd(subject to Cd),mg/kg ≤ | 2 | 2 |
| Hg(subject to Hg),mg/kg ≤ | 0.2 | 0.2 |
| Water content,% ≤ | 3 | 3 |
| Fineness (Passing rate), % ≥ | W=180µm≥95 | W=850µm≥95 |
2、Product Feature
NO.1 Through recrystallization, FeSO4·7H2O is highly purified, with few impurities (Fe≥31%).
NO.2 Content of ferric iron is low, less than 100pm. Compared with Longmang company, its content is 200-300ppm.
No.3 Granularity of 95% is over 80 meshes, and granularity of Longmang iron is uneven.
No.4 Owing to raw materials rinsing, free acid in products is extremely low, less than 0.3%.
