Summary of the different H₂CO desorption experiments performed, including the derived desorption energies (the Arrhenius equation pre-exponential factor being fixed to 10²⁸ molec cm^-2 s^-1) of each experiment. (i.) H₂CO multilayer sample; (ii.) sub-monolayer of H₂CO on top of a compact amorphous ice surface; (iii.) sub-monolayer of H₂CO on top of a silicate surface; (iv.) H₂CO embedded in amorphous water ice.