Ammonium phosphite is a chemical pesticide represented by the chemical formula (NH4)3PO3. The chemical formula for ammonium is NH4, and the chemical formula for phosphite is PO3. The chemical formula for the molecule can also be written as H12N3O3P. Ammonium phosphite may also be referred to as triammonium phosphite.
Ammonium phosphite has a molar mass of 133.08 grams per mole. It contains hydrogen, represented by H; nitrogen, represented by N; oxygen, represented by O; and phosphorus, represented by the letter P. It is made up of 12 atoms of hydrogen, three atoms of nitrogen, three atoms of oxygen and one atom of phosphorus.