Theodor Salzer

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Theodor Salzer (born February 27, 1833 in Worms ; † January 29, 1900 there ) was a German pharmacist and chemist. He is considered to be the discoverer of hypophosphorous acid .

Born as the son of the Worms pharmacist Johann Friedrich Salzer, Salzer attended grammar school from 1843 and from 1848 the trade school in Darmstadt , where he broke off his studies in architecture . Instead he did an apprenticeship as a pharmacist in Mutterstadt and worked as an assistant in Pforzheim , Basel and Koblenz .

In 1857 he started his studies at the Ruprecht-Karls-Universität Heidelberg and at the same time took over the Worms Eagle Pharmacy from his father, which he ran until 1891. Salzer deserves the credit of being the first to describe a residue in phosphoric acid in 1894 , which is formed when yellow phosphorus is slowly oxidized with reduced air supply. He demonstrated that this residue breaks down into phosphorous acid and phosphoric acid when the aqueous solution is stored or evaporated . The chemical analysis of hypophosphoric acid (H 4 P 2 O 6 ) was achieved two years later by the Munich medical student and later chief physician of the Heidelberg orthopedics department, Hans von Baeyer .

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