Customization: | Available |
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CAS No.: | 7782-63-0 |
Formula: | Feso4 |
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ITEM | LIMIT | |
CHARACTERS | 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. |
Solubility | Freely soluble in water, practically insoluble in ethanol. | |
Identification | It gives the reactions of sulfates. | |
It gives the reaction(a)of ferrous. | ||
Test | PH | 3.0 to 4.0 |
Chloride | Not more than (0.02%). | |
Subsulfate | The solution is clear. | |
Manganese | Not more than (0.1%). | |
Ferric salt | Not more than 0.3%. | |
Zinc | Not more than (0.005%). | |
Nickel | Not more than (0.005%). | |
Chromium | Not more than (0.005%). | |
Copper | Not more than (0.005%). | |
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Not more than (0.0003%). | |
Heavy metals | No more than 20 parts per million. | |
Arsenic | Not more than (0.0002%). | |
Microbial limit | The total number of aerobic bacteria shall not exceed 1000cfu/g. | |
The total number of mold and yeast must not exceed 100cfu/g. | ||
Escherichia coli should not be detected. | ||
Assay | This product contains ferrous sulfate (FeSO4•7H2O) should be 99.0% ~ 104.0%. |