Ammonium Ferric Citrate, identified by its CAS number 1185-57-5, is a complex salt characterized by its unique chemical structure and beneficial properties. This compound is essentially a coordination complex of iron in its ferric (Fe3+) state with ammonium and citrate ions. The citrate ions act as chelating agents, binding to the iron and enhancing its stability and solubility in aqueous solutions. This chelating effect is key to its high bioavailability as an iron supplement.

Physically, Ammonium Ferric Citrate typically presents as a brown powder or granular solid, though green forms are also described. It is known to be hygroscopic, meaning it readily absorbs moisture from the air, necessitating proper storage in tightly sealed containers. Its molecular formula is often represented as C6H11FeNO7, with a molecular weight of approximately 265.00 g/mol. A critical characteristic is its high water solubility, around 1200 g/L at 20°C, which is significantly higher than that of simpler ferric salts.

The pH of a 100g/L solution in water is typically in the range of 6-8. This near-neutral pH contributes to its compatibility in various formulations. Its melting point is noted as being greater than 193°C with decomposition, indicating good thermal stability under normal processing conditions.

The benefits of Ammonium Ferric Citrate are manifold. As a source of iron, it is highly effective in preventing and treating iron deficiency anemia. Its bioavailable form ensures efficient absorption, minimizing the gastrointestinal side effects often associated with less soluble iron supplements. This makes it a preferred ingredient for NINGBO INNO PHARMCHEM CO.,LTD. when formulating high-quality nutritional products and pharmaceuticals. Furthermore, its anticaking properties are invaluable in the food industry, maintaining the flowability and quality of powdered goods.

The inherent properties of Ammonium Ferric Citrate, including its solubility, stability, and bioavailable iron content, establish it as a valuable and versatile chemical compound with broad applications in health, food, and industry.