Vitriol

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.

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),

Appearances

 * Harry Potter films
 * Harry Potter Wizard's Collection