Aluminium formate is the aluminium salt of formic acid, with the chemical formula Al(HCOO)<sub>3</sub>. It can be produced via the reaction of aluminium soaps and formic acid. Reaction between formic acid and aluminium hydroxide yields Al(HCOO)<sub>3</sub>(CO<sub>2</sub>)<sub>0.75</sub>(H<sub>2</sub>O)<sub>0.25</sub>(HCOOH)<sub>0.25</sub>. Upon activation at 180 ðC, guest molecules are removed to obtain Al(HCOO)<sub>3</sub>.