3 NH₄OH (l) + H₃PO₄ (aq) → (NH₄)₃PO₄ (aq) + 3 H₂O (l)

This is an acid-base reaction (neutralization): NH₄OH is a base, H₃PO₄ is an acid.

Reactants:

• NH₄OH
  • Names: Ammonium hydroxide , Ammonia solution , Ammonium hydroxide (10%-35% solution) ... show moreAmmonia , Household ammonia , Ammonia water , Ammonia liquor , Aqueous ammonia , E527 , NH4OH , Ammonia aqueous , Aqua ammonia , Ammonium hydrate , Ammonia aqueous solution (10-35%) show less
  • Appearance: Colourless liquid ; Very volatile colourless ammonia solution in water with pungent odour
• H₃PO₄
  • Names: Phosphoric acid , Orthophosphoric acid , Phosphoric(V) acid ... show moreWhite phosphoric acid , [PO(OH)3] , H3PO4 , E338 , Phosphoric acid (aqueous) show less
  • Appearance: Hygroscopic colourless crystals ; Thick, colorless, odorless, crystalline solid. [Note: Often used in an aqueous solution.]

Products:

• (NH₄)₃PO₄ – Ammonium phosphate
  • Other names: Triammonium phosphate , Tribasic ammonium phosphate
  • Appearance: White, tetrahedral crystals
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas