Claude Louis Berthollet:
Claude Louis Berthollet was a French chemist.
December 9, 1748 in Talloires, Savoy, France
November 6, 1822 in Arcueil, France
Claim to Fame:
Berthollet was a French chemist who introduced the use of chlorine based bleach as a dye. He also argued against the law of definite proportions where chemicals combine in whole number ratios. Non-stoichiometric compounds are called berthollides in his honor.