Title: Ferric Phosphate
CAS Registry Number: 10045-86-0
Molecular Formula: FeO4P
Molecular Weight: 150.82
Percent Composition: Fe 37.03%, O 42.43%, P 20.54%
Line Formula: FePO4
Literature References: Occurs in nature as the minerals: beraunite, cacoxenite, dufrenite, koninckite, phosphosiderite, strengite. Prepn from Fe(H2PO4)3: Remy, Boulle, Compt. Rend. 253, 2699 (1961); from Fe(CO)5 and H3PO4: Cate et al., Soil Sci. 88(3), 130 (1959); from phosphate rock: Vickery, US 2914380 (1959 to Horizons Inc.); from mill scale and H3PO4: Alexander, Mathes, US 3070423 (1962 to Chemetron).
Derivative Type: Dihydrate
Properties: White, grayish-white, or light pink, orthorhombic or monoclinic crystals or amorphous powder. Loses water above 140°. d 2.87. Practically insol in water. Slowly sol in HNO3; readily sol in HCl.
Density: d 2.87
Use: As food and feed supplement, particularly in bread enrichment; as fertilizer. |