Monoammonium Phosphate

Product Description

Analysis: most commonly 11-52-0, but also available in slightly varying analyses

Commonly known as MAP, monoammonium phosphate is one of the most commonly used fertilizers. It is manufactured by reacting 1 mole of phosphoric acid (produced from mined phosphate rock) with 1 mole of ammonia. The resulting slurry is solidified into a granular form.


  • Blends well with most products
  • Highest P concentration among standard dry fertilizers
  • Provides added source of N, which is in a readily-available form for plant uptake


  • Does not mix well with calcium products


  • Fairly hard granules available in various sizes (SGN)
  • Water soluble
  • Varying shades of brown, but can also be white

Application methods:

  • Broadcast (surface-applied) or banded (adjacent to the seedbed)
  • Used as stand-alone product or more commonly in blends with varying combinations of N, K and micronutrients


Available from various external sources

Regularly Stocked at:


Master Safety Data Sheet