Iron(III) phosphate hydrate (FePO4•xH2O)-Powder

Characteristic




Iron(III) phosphate, also ferric phosphate, is the inorganic compound with the formula FePO4. Several related materials are known, including four polymorphs of FePO4 and two polymorphs of the dihydrate FePO4·(H2O)2. These materials find several technical applications as well as occurring in the mineral kingdom.




Chemical formula:FePO4

Molar mass:150.815 g/mol (anhydrous)

Appearance:yellow-brown solid

Density:3.056 g/cm3 (anhydrous);2.87 g/cm3 (20 °C, dihydrate)

Melting point:250 °C (482 °F; 523 K)(dihydrate) decomposes

Solubility in water:anhydrous:insoluble

                           dihydrate:0.642 g/100 mL (100 °C)

Magnetic susceptibility (χ):+11,500.0·10−6 cm3/mol




Application




Iron phosphate supported on MCM-41 is used in the partial oxidation of methane into methanol, formaldehyde and dimethyl ether. It is involved in the oxidative dehydrogenation of isobutyric acid.