Vitriol (an historical name for sulfuric acid, or H2SO4) is a highly corrosive acid. It is a colourless to slightly yellow viscous liquid which is soluble in water at all concentrations.[1]

Among its many uses, vitriol is used for its magical properties as a component of Belch Powder (two pounds of the substance, in the apothecaries' system of weights, are required),[2][3]


Notes and references

  1. "Sulfuric acid" at Wikipedia
  2. Label Collection book in the Harry Potter Wizard's Collection box set.
  3. The label reads: "of Mummy, Mastick, Red Myrrhe, Olibanum, Ammoniacum, Oppopanax, Bdelium, each ʒii. Vitriol ℔ii. Honey, ℔ii. Tartar ℥1,ſs. Aquavitæ, gal.iii." which uses the apothecaries' system of weights.