Definition of iron sulphate in English:

iron sulphate


  • 1Iron(ii) sulphate (ferrous sulphate), FeSO ₄, a green crystalline solid used in dyeing, nutritional supplements, water purification, etc.

  • 2Iron(iii) sulphate (ferric sulphate), Fe ₂ (SO ₄) ₃, a yellow crystalline solid used as a mordant in dyeing.


Mid 19th century; earliest use found in The Mechanics' Magazine.