Ferrous sulfate
CAS No.: 7720-78-7
Product Name: Ferrous sulfate
CAS#7720-78-7
Spec: Pharmaceutical grade
Package: 25kg/drum
Delivery time: in stock for prompt shipment
Dangerous goods or not: Not
Country of origin: China
CAS#7720-78-7
Spec: Pharmaceutical grade
Package: 25kg/drum
Delivery time: in stock for prompt shipment
Dangerous goods or not: Not
Country of origin: China
Description
Spec of Ferrous sulfate :
| Items | Specification | Results |
| Appearance | This product is a light blue-green columnar crystal or particle; Odorless; Weathering in dry air and rapidly oxidizing and deteriorating in humid air, resulting in the formation of yellow brown basic iron sulfate on the surface. | Conform |
| Solubility | Freely soluble in water, practically insoluble in ethanol. | Conform |
| Identification | It gives the reactions of sulfates. | Conform |
| It gives the reaction（a）of ferrous. | Conform | |
| PH | 3.0～4.0 | 3.9 |
| Chloride | Not more than（0.02%） | <0.02% |
| Subsulfate | The solution is clear. | Clear |
| Manganese | Not more than（0. 1%） | <0. 1% |
| Ferric salt | Not more than 0.3% | 0.03% |
| Zinc | Not more than（0.005%） | <0.005% |
| Nickel | Not more than（0.005%） | <0.005% |
| Chromium | Not more than（0.005%） | <0.005% |
| Copper | Not more than（0.005%） | <0.005% |
| Merc | Not more than（0.0003%） | <0.0003% |
| Heavy metals | No more than 20 ppm | Conform |
| Arsenic | Not more than （0.0002%） | <0.0002% |
| Microbial limit | The total number of aerobic bacteria shall not exceed 1000cfu/g | <10cfu/g |
| The total number of mold and yeast must not exceed 100cfu/g | <10cfu/g | |
| Escherichia coli should not be detected | Not detected | |
| Assay | This product contains ferrous sulfate (FeSO4•7H2O) should be 99.0% ~ 104.0% | 99.6% |
