Monoammonium phosphate (MAP) is a water-soluble and quick acting compound fertilizer, with a ratio of available phosphorus (AP2O5) to total nitrogen (TN) content of approximately 5.44:1. It is one of the main varieties of high concentration phosphorus compound fertilizers. This product is generally used as topdressing and is also the main basic raw material for producing ternary compound fertilizers and BB fertilizers; This product is widely applicable to various grain and economic crops such as rice, wheat, corn, sorghum, cotton, fruits, vegetables, etc; Widely applicable to various soil types such as red soil, yellow soil, brown soil, yellow tide soil, black soil, brown soil, purple soil, white mud soil, etc; Especially suitable for use in arid and rainless areas such as northwest, north, and northeast China.Monoammonium phosphate is a white powder or granular substance (granular products have high particle compressive strength) with a density of 1.803 (19 ℃). The melting point is 190 ℃, easily soluble in water, slightly soluble in alcohol, and insoluble in acetone. At 25 ℃, the solubility of 100g of water is 41.6g, and the heat of formation is 121.42kJ/mol. The pH value of the 1% aqueous solution is 4.5, which is neutral, stable at room temperature, and has no oxidation-reduction properties. It will not burn or explode when exposed to high temperature, acid, or oxidation-reduction materials. It has good solubility in water or acid. The powdered product has a certain degree of hygroscopicity and good thermal stability, And at high temperatures, it will dehydrate into viscous chain like compounds such as ammonium pyrophosphate, ammonium polyphosphate, and ammonium metaphosphate. Scattered objects and their disposal methods: Simple cleaning is sufficient. Transportation and storage protection measures: To prevent products from getting damp, clumping, and spoilage, they should be stored indoors or covered with protective materials such as tarpaulins, while avoiding exposure to sunlight.