Mono ammonium Phosphate(MAP)

CAS No.:    7722-76-1
MF:NH4H2PO4     EINECS No.:  231-764-5
Agriculture Grade, Industrial Grade   MAP 12-61-0
Production
The process for manufacturing MAP is relatively simple. In a common method, a one-to-one ratio of ammonia (NH3) and phosphoric acid (H3PO4) is reacted and the resulting slurry of MAP is solidified in a granulator. The second method introduces the two starting materials in a pipe-cross reactor, where the reaction generates heat to evaporate water and solidify MAP. Other methods exist as well. An advantage of manufactured MAP is that lower-quality H3PO4 can be used compared with other P fertilizers often requiring a more pure grade of acid. The phosphorus pentoxide (P2O5) equivalent content of MAP varies from 48 to 61 percent, depending on the amount of impurity in the acid. The most common fertilizer composition is 11-52-0.
Agricultural use
MAP has been an important granular fertilizer for many years. It’s water-soluble and dissolves rapidly in adequately moist soil. Upon dissolution, the two basic components of the fertilizer separate again to release ammonium (NH4+) and phosphate (H2PO4-), both of which plants rely on for healthy, sustained growth. The pH of the solution surrounding the granule is moderately acidic, making MAP an especially desirable fertilizer in neutral- and high-pH soils. Agronomic studies show that, under most conditions, no significant difference exists in P nutrition between various commercial P fertilizers under most conditions.
Non-agricultural uses
MAP is used in dry chemical fire extinguishers commonly found in offices, schools and homes. The extinguisher spray disperses finely powdered MAP, which coats the fuel and rapidly smothers the flame.
*MAP is also known as ammonium phosphate monobasic and ammonium dihydrogen phosphate.
 
Product details:

 
PACKING:25KG/50KG PP/PE BAG.
 
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