HCHO +O----.> HCOOH metanal prin oxidare energica=> acid metanoic(formic)
HCOOH +C3H7OH---->HCOOC3H7 +H20 acid metanoic cu alcool propilic prin esterificare =>metanoat(formiat) de propil(ester)
HCOOC3H7 +H2O----HCOOH+C3H7OH ester prin hidroliza reface acidul si alcoolul