Johnson, Julian Ammonium Sulfate (NH4)2SO4

Ammonium Sulfate is binary ionic. This compound is commonly used to promote plant growth, but when too much is used alkaline levels in the soil raise and the plants tend to die. Aside from plant growing ammonium sulfate is a key ingredient in fire extinguishers. Also, ammonium sulfate is commonly used in flooded soil in the process of growing rice. 

 Ammonium sulfate pdf