Diammonium Phosphate (12 Hydrate–Anhydrous) (CAS: 7783-28-0) – Multipurpose Phosphate Fertilizer and Chemical

🧪 CAS Number: 7783-28-0

🌟 Product Description

Diammonium phosphate ((NH4)2HPO4) is a colorless crystalline salt obtained by the reaction of phosphoric acid with ammonia. Both the 12-hydrate and anhydrous forms are widely used in agriculture and industry. As a rich source of phosphorus and nitrogen, it is primarily applied as a fertilizer, but also serves in fire extinguishing powders, water treatment, and food industry applications.

🏭 Applications

🌱 Agriculture: High phosphorus and nitrogen fertilizer

🔥 Fire Extinguishing: Component in dry chemical fire extinguishers

💧 Water Treatment: Corrosion and scale inhibitor

🍞 Food Industry: Leavening agent and yeast nutrient

🏭 Industrial Uses: Ceramics, metal surface treatment, and textiles

📊 Physical & Chemical Properties

Appearance: Colorless crystals or granules

Odor: Slight ammonia-like

Molecular Formula: (NH₄)₂HPO₄

Molecular Weight: 132.06 g/mol

Density: ~1.62 g/cm³

Melting Point: ~155 °C (decomposes)

Solubility: Completely soluble in water

⚠️ Storage & Safety

Store in a cool, dry, and well-ventilated place. Protect from moisture. Avoid overheating and contact with acids. May cause skin and eye irritation; protective gloves and goggles are recommended.

🔑 Keywords

diammonium phosphate, dap fertilizer, CAS 7783-28-0, phosphate fertilizer, fire extinguisher additive, food additive

📛 Other Names

DAP, Diammonium Salt of Phosphoric Acid