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Diammonium Phosphate

DIAMMONIUM PHOSPHATE

Diammonium Phosphate (NH4)2HPO4 is one of the water-soluble salt, an ammonium salt of phosphoric acid. It is an inorganic phosphate, plays the role of fertilizer. It is soluble in water and loses about 8% ammonium on disclosure to the air. When Diammonium Phosphate is heated it emits very toxic fumes of ammonia, phosphorus oxide, and nitrogen oxide. It is unstable at room temperature. It is used in household & commercial/institutional products as well as in pesticides. It has a structure containing tetrahedral phosphate. It is a crystalline substance.

 

Uses of Ammonium Dioxide

  • It is mainly used in fertilizers.
  • It is widely utilized in garden care products.
  • It is used as a nicotine enhancer.
  • It is used in purifying water and clarifying sugar.
  • It is used in toner and cosmetics.
  • It is used as an ingredient in the fermentation process industrially.
  • It is used as a flame-retardant for clothes and paper.

 

Preparation

We need raw materials, i.e., ammonia (NH3) and phosphorous acid (H3PO3). It is formulated in a very controlled reaction of ammonia with phosphoric acid, and then the hot slurry is cooled down and granulated.

 

Chemical Properties of Diammonium phosphate

Diammonium phosphate (DAP) is a widely used fertilizer and an important source of phosphorus and nitrogen for plant growth. Its chemical properties play a crucial role in its effectiveness as a fertilizer.

One significant chemical property of DAP is its solubility in water. Being highly soluble, DAP readily dissociates into its constituent ions, ammonium (NH4+) and phosphate (PO43-), upon dissolution. This property allows for efficient nutrient uptake by plants, as the dissolved ions are readily available for root absorption.

Another important chemical property is its ability to undergo hydrolysis in soil. When applied to soil, DAP gradually hydrolyzes to release ammonium and phosphate ions over time. This gradual release ensures a sustained supply of nutrients to plants, promoting healthy growth and development throughout the growing season.

Additionally, DAP’s pH buffering capacity is noteworthy. It can help maintain soil pH within an optimal range for plant growth, thus enhancing nutrient availability and uptake.

Overall, the chemical properties of DAP contribute to its effectiveness as a fertilizer, supporting robust plant growth and maximizing crop yields.

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