Differences between Mono Ammonium Phosphate (MAP) and Di Ammonium Phosphate (DAP)


Mono Ammonium Phosphate (MAP) Di Ammonium Phosphate (DAP)
Acronym of Mono Ammonium Phosphate is MAP Acronym of Di Ammonium Phosphate is DAP
Molecular formula of Mono Ammonium Phosphate is NH4H2PO4 Molecular formula of Di Ammonium Phosphate is (NH4)2HPO4
Molecular weight of Mono Ammonium Phosphate is 115 Molecular weight of Di Ammonium Phosphate is 132.06
CAS No of Mono Ammonium Phosphate is 7722-76-1 CAS No of Di Ammonium Phosphate is 7783-28-0
MAP contains one ammonium ion (NH₄⁺) per molecule. DAP contains two ammonium ions (NH₄⁺) per molecule.
The cost of Mono Ammonium Phosphate is slightly higher compared to Di Ammonium Phosphate due to more phosphorus content. The cost of Di Ammonium Phosphate is lower compared to Mono Ammonium Phosphate due to less phosphorus content.
The pH of Mono Ammonium is lower than Di Ammonium Phosphate. pH of LR grade MAP is between 4-4.5 The pH of Di Ammonium is higher than Mono Ammonium Phosphate. pH of LR grade DAP is between 7.5-8.5
Mono Ammonium Phosphate is also known as Ammonium Phosphate Monobasic, Ammonium Dihydrogen Orthophosphate, MAP. Di Ammonium Phosphate is also known as Ammonium Phosphate Dibasic, Di Ammonium Hydrogen Phosphate, DAP.
MAP is used in water treatment processes to prevent corrosion in pipes and boilers. DAP is used in water treatment processes to adjust the pH levels and as a source of phosphorus for biological treatment processes.
MAP is used as a leavening agent in baking and as an acidity regulator in various food products. DAP is used as a yeast nutrient in the fermentation process of brewing beer, wine, and other alcoholic beverages.
MAP is used in dry chemical fire extinguishers due to its ability to smother fires and prevent re-ignition. DAP is used in the production of fire retardant materials for use in forest fire control and other fire protection applications.


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