Di-Ammonium Phosphate (DAP)
Di-Ammonium Phosphate (DAP)
Di-Ammonium Phosphate (DAP) is a widely utilised chemical compound in agricultural and industrial applications, including fertiliser production, fire retardants, and metal treatment processes. Its high nitrogen and phosphorus content, along with its ease of handling and solubility, make it a preferred choice in many industries. DAP is typically produced by reacting ammonia with phosphoric acid, resulting in a stable, water-soluble product.
Chemical Composition and Properties for Iron Ore
– General Formula: Varies depending on the type of iron ore; common forms include Fe₂O₃ (hematite), Fe₃O₄ (magnetite), FeO(OH) (goethite), and FeCO₃ (siderite).
– Primary Components: Iron oxides, hydroxides, and occasionally carbonates, depending on the ore type.
– Iron Content: Typically ranges from 50% to 72% iron by weight, depending on the ore’s purity and type.
– Colour: Ranges from red (hematite), black (magnetite), yellow-brown (goethite), to grey (siderite), depending on composition and weathering.
– Crystal System: Varies; hematite is trigonal, magnetite is isometric, goethite is orthorhombic, and siderite is trigonal.
– Hardness: 4 – 7 on the Mohs scale, depending on the type of iron ore.
– Specific Gravity: 3.3 – 5.3, varying with ore type.
Chemical Information
– CAS Number: 1317-60-8 (commonly used for iron oxides in iron ore).
– Chemical Composition: A mix of iron oxides, hydroxides, or carbonates, often represented as Fe₂O₃, Fe₃O₄, or FeO(OH).
– Molecular Weight: Variable, depending on the mineral’s composition.
– HS Code: 2601.11.00.00 (for iron ores and concentrates, primarily hematite and magnetite).
