When was chlorine discovered?
Pure chlorine was discovered by the Swedish scientist Wilhelm Scheele in 1774.
In those days, Scheele was not aware of the fact that he had discovered one of the 92 natural elements that would be regrouped - about a century later - by Dmitri Mendeleev in his famous Periodic Table of the Elements.
Wilhelm Scheele was a clever chemical and pharmaceutical scientist. He also discovered the gases oxygen and nitrogen and the metals barium, manganese, molybdenum and tungsten.