Fa'atomuaga pupuu: Ferrous sulfate heptahydrate, e masani ona ta'ua o le alum lanumeamata, o se fa'aputuga fa'aletino ma le fua FeSO4·7H2O.E masani ona faʻaaogaina i le gaosiga o le masima uʻamea, vaitusi, faʻamaneta uʻamea oxide, vai faʻamamaina sui, faʻamaʻi, faʻamaʻi uʻamea;E fa'aaogaina e pei o le koale vali, tanning agent...
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