It was discovered in the 800 A.D. by [[Geber]] when he mixed [[sodium]] [[chloride]] - the common [[salt]] - and [[vitriol]], i.e., [[sulphuric acid]] (another discovery of Geber). | It was discovered in the 800 A.D. by [[Geber]] when he mixed [[sodium]] [[chloride]] - the common [[salt]] - and [[vitriol]], i.e., [[sulphuric acid]] (another discovery of Geber). |