Diammonium phosphate

Diammonium phosphate

diammonium hydrogen phosphate; ammonium phosphate dibasic; diammonium hydrogen orthophosphate

CAS 7783-28-0

Chemical Formula (NH4)2HPO4

Molecular Weight 132.06 g/mol

Diammonium phosphate (DAP) is a widely used fertilizer that provides both nitrogen and phosphorus, essential nutrients for plant growth. It's a white, crystalline, water-soluble salt with the chemical formula (NH4)2HPO4. DAP is produced by reacting ammonia with phosphoric acid and is known for its excellent physical properties, making it easy to handle and apply. It's a popular choice for agriculture due to its high nutrient content and effectiveness in promoting plant development. 

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Industrial Uses

1. Agrochemicals

  • As a Source of Nitrogen and Phosphorus: DAP is a readily available source of nitrogen and phosphorus, two macronutrients vital for plant growth and development.

2. Performance Chemicals

  • As a Catalyst: Diammonium phosphate can be modified to act as a heterogeneous catalyst. One method involves impregnating Diammonium phosphate with a bismuth precursor and then processing it to create a bismuth-modified Diammonium phosphate catalyst.
  • Buffering Action: Diammonium phosphate, when dissolved in water, dissociates into ammonium ions (NH4+) and phosphate ions (HPO42-). These ions can react with both acids and bases, helping to maintain a relatively constant pH.

3. Construction

  • Fire retardant: Diammonium phosphate (DAP) acts as a fire retardant by lowering the combustion temperature, decreasing weight loss during combustion, and increasing char formation. These effects help to inhibit the spread of fire and create a barrier against flames.
  • Consolidation of Stone: Diammonium phosphate is been used to consolidate and strengthen decayed or damaged stone in historic buildings and cultural heritage sites.
  • Magnesium Phosphate Cements: Diammonium phosphate reacts with magnesium oxide to create magnesium phosphate cement, a material known for its high strength.
  • Flux: Phosphates, including Diammonium phosphate, act as fluxes in ceramic compositions, lowering the firing temperature and promoting the formation of a glassy phase.
  • Binder: Diammonium phosphate is been used as a binder in refractory ceramics, which are used in high-temperature applications.

Specifications

Assay 98%
Appearance White, off-white, or slightly yellow crystalline powder or granules
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point 155°C
Density 1.62 g/cm3
Solubility Soluble in water; insoluble in alcohol
Viscosity Not applicable
Flash Point Not flammable

Hazard Symbols

Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Diammonium phosphate in India?
The price of Diammonium phosphate can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Diammonium phosphate in India?
You can purchase Diammonium phosphate from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Diammonium phosphate? 
Our minimum order quantity (MOQ) for Diammonium phosphate is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Diammonium phosphate supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.