Ammonium Dihydrogen Phosphate

Other Trading Names:

  • ADP
  • MAP
  • Ammonium phosphate monobasic
  • Ammonium dihydrogen orthophosphate

CAS Number: 7722-76-1

HS Code: 31054000

Types of Packaging:

  • 25kg/bag
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Ammonium Dihydrogen Phosphate

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White or colorless crystal

Purity (min)


Main contents (as NH4H2PO4)


Phosphorus pentoxide (AS P2O5)


Nitrogen (as N)


Arsenic (As)


Fluoride (as F)


Sulphate (as SO4)




Water Insoluble


PH (1% solution)


Chemical Description:

  • Ammonium dihydrogen phosphate, also known as ADP or monoammonium phosphate, is a chemical compound with the formula NH₄H₂PO₄.
  • It appears as a white crystalline powder and is highly soluble in water, forming a slightly acidic solution.
  • The compound is commonly used as a fertilizer due to its high phosphorus content, which is essential for plant growth.
  • MAP is an important ingredient in fire extinguishers, particularly in dry chemical fire extinguishers used to combat Class A, B, and C fires.
  • It is also utilized in the agriculture industry as a source of phosphorus and nitrogen, two critical nutrients for plants.
  • In the food industry, ammonium dihydrogen phosphate serves as a leavening agent in baking powders and as an acidity regulator.
  • ADP is employed in the production of yeast as a yeast nutrient, promoting the fermentation process in baking and brewing.
  • The compound is used in the preparation of animal feed supplements to provide essential nutrients to livestock.
  • In laboratory settings, ammonium dihydrogen phosphate is utilized as a reagent and in buffer solutions for biochemical and molecular biology experiments.
  • MAP is instrumental in the manufacture of various pharmaceutical products, including some medications and nutritional supplements.
  • It plays a significant role in the treatment of wastewater, helping to remove impurities and improve water quality.
  • The compound is also used in the textile industry as a flame retardant for fabrics, enhancing their safety by reducing flammability.
  • Ammonium dihydrogen phosphate has applications in the ceramics industry, where it is used as a flux to lower the melting point of raw materials.
  • The compound is used in the electroplating industry to prepare metal surfaces for plating by cleaning and etching them.
  • ADP is also employed in the production of certain types of glass, contributing to the desired properties of the final product.
  • In the construction industry, it is used as an additive in some types of cement and concrete to improve their properties.
  • Ammonium dihydrogen phosphate is often utilized in the synthesis of other chemicals, acting as a precursor or intermediate in various chemical reactions.
  • It has significant importance in scientific research, where it is used in studies related to crystallography and materials science.
  • The compound is handled with care due to its potential to cause irritation to the skin, eyes, and respiratory system if proper safety measures are not followed.
  • Ammonium dihydrogen phosphate is considered environmentally friendly when used appropriately, as it breaks down into harmless components that do not persist in the environment.
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Ammonium Dihydrogen Phosphate