Monoammonium phosphate (chemical formula NH4H2PO4), also known as monoammonium phosphate has several uses, including:
1.Agricultural fertilizers: Monoammonium phosphate is a nitrogen-phosphorus fertilizer that contains nitrogen and phosphorus elements that can be absorbed by plants. It can provide the nutrients needed by plants and promote the growth and development of plants. In addition, monoammonium phosphate is also acidic, which can adjust the pH of the soil and improve the absorption of other nutrients by plants.
2.Torch fuel: Fuel component for solid torches or pyrotechnics. It produces a high temperature and bright flame in these applications and provides a long-lasting burn.

3.Metal surface treatment: Monoammonium phosphate can be used for derusting and deoxidizing treatment of metal surfaces. It can dissolve rust and form a phosphate layer on the metal surface to protect and improve surface properties.
4.Cleaning agents and detergents: In the formulation of cleaning agents and detergents. It removes stains and deposits and has a good stain and scale removal effect.
5.Chemical experiments and teaching: Chemical experiments and teaching for synthesis, reduction and neutralization reactions, etc. It can also be used for the analysis and identification of phosphate.

NOTE: When using monoammonium phosphate, relevant safety operating procedures should be followed, and mixing with harmful chemicals such as strong alkalis or oxidants should be avoided.