Joseph Proust

Joseph Louis Proust
Born
Joseph Louis Proust

(1754-09-26)26 September 1754
Angers, France
Died5 July 1826(1826-07-05) (aged 71)
Angers, France
OccupationChemist

Joseph Louis Proust (26 September 1754 – 5 July 1826) was a French chemist. He was best known for his discovery of the law of definite proportions in 1797, stating that chemical compounds always combine in constant proportions.

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