Iron(II) sulfate, solution 0.5 M

Molecular formula:
FeSO4
Chemical compound:
iron(II) sulfate
Common name:

FeSO4 – iron(II) sulfate – in its pure form is colorless, odorless, and non-volatile. As it absorbs moisture easily, it forms crystals together with varying amounts of water molecules, most commonly FeSO4 * 7H2O crystallohydrate. This substance’s blue-green color led to its age-old name of green vitriol. Previously, iron vitriol was used to make iron gall ink, lending the ink its characteristic deep purple-black color. Currently, it is used to prevent wood from rotting, and is sometimes prescribed to treat iron deficits.

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Hazard information

Hazard statements

  • Harmful if swallowed.
  • Causes skin irritation.
  • Causes serious eye irritation.

Precautionary statements

  • IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing.