Ferric Pyrophosphate: Properties, Synthesis, and Applications
Ferric pyrophosphate is a compound that belongs to the family of iron phosphates. It is a reddish-brown powder that is commonly used as a food additive, as a source of iron in supplements and fortifications, and in biomedical applications such as MRI contrast agents. In this article, we will explore the properties, synthesis, and applications of ferric pyrophosphate in greater detail. Properties of Ferric Pyrophosphate Ferric pyrophosphate has a molecular formula of Fe4(P2O7)3 and a molar mass of 745.22 g/mol. It is insoluble in water but soluble in dilute acids, making it a useful source of iron in the human body. It has a density of 3.82 g/cm³ and a melting point of 800°C. Ferric pyrophosphate is stable at room temperature but can decompose at higher temperatures, releasing phosphoric acid and ferric oxide. Synthesis of Ferric Pyrophosphate Ferric pyrophosphate can be synthesized by reacting ferric oxide (Fe2O3) with pyrophosphoric acid (H4P2O7) at high temperatures. The reaction pr