Ferrous sulfate heptahydrate FeSO .7H O (or Iron sulfate or Copperas) (IFN 6-20-734) is the heptahydrated divalent iron salt of sulfuric acid.
Sulfate ferreux heptahydraté FeSO .7H O (ou Sulfate de fer) (NIA 6-20-734) — sel ferreux divalent heptahydraté de l’acide sulfurique.