Monoammonium phosphate (11-48-0) is a dry material being used for bulk blending or direct applications. Monoammonium phosphate has a lower ammonia content and may be less injurious to germinating seeds than diammonium phosphate.The general agronomic effects of diammonium and monoammonium phosphates are equal for most soils.
MAP is produced by combining phosphoric acid and ammonia. The most common grade for MAP is 11% nitrogen and 52% phosphorus pentoxide. MAP is widely produced in granular form for direct application as a fertilizer or in bulk blending of dry fertilizers. The compound is also a component of some dry powder fire extinguishers. It is stored and transported as a solid at ambient temperatures.
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