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By certification 
Molecular Formula: C12H22FeO14
Molecular Weight: 446.14
Packaging: 25kg/Drum or Bag
Characters: Gray or pale yellow bag with gray-green powder or granules, somewhat similar to the smell of caramel.
| Ferrous Gluconate | USP29Ed |
| Assay | 97.0-102.0% |
| Loss on drying | 6.5-10.0% |
| Chloride | ≤0.07% |
| Sulfate | ≤0.1% |
| As | ≤3ppm |
| Pb | ≤10ppm |
| Mercury | ≤3ppm |
| Fe3+ | ≤2.0% |
