Richard Herz (July 21, 1867 – November 18, 1936) was a German chemist. He discovered the

Herz reaction The Herz reaction, named after the chemist Richard Herz, is the chemical conversion of an aniline-derivative (1) to a so-called Herz salt (2) with disulfur dichloride, followed by hydrolysis of this Herz salt (2) to the corresponding sodium thiolat ...

. He studied chemistry at the

University of Heidelberg } Heidelberg University, officially the Ruprecht Karl University of Heidelberg, (german: Ruprecht-Karls-Universität Heidelberg; la, Universitas Ruperto Carola Heidelbergensis) is a public research university in Heidelberg, Baden-Württemberg, ...

, at the Technical College of Berlin and at the

University of Berlin Humboldt-Universität zu Berlin (german: Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a German public research university in the central borough of Mitte in Berlin. It was established by Frederick William III on the initiative o ...

, and earned his PhD in 1891. From 1892 he was employed by the Leonhardt und Co. Works in Mühlheim am Main and in 1895 he joined a British firm, Levinstein, in Manchester. He was recruited by

Cassella Cassella AG, formerly Leopold Cassella & Co. and Cassella Farbwerke Mainkur AG, commonly known as Cassella, was a German chemical and pharmaceutical company with headquarters in Frankfurt am Main. Founded in 1798 in the Frankfurt Jewish Alley by ...

in 1899, and played a key role in the company's development of

sulfur dye Sulfur dyes are the most commonly used dyes manufactured for cotton in terms of volume. They are inexpensive, generally have good wash-fastness, and are easy to apply. Sulfur dyes are predominantly black, brown, and dark blue. Red sulfur dyes are u ...

s. He received power of procuration in 1918 and became deputy director in 1925. He retired in 1931.Winfried R. Pötsch, Annelore Fischer, Wolfgang Müller: ''Lexikon bedeutender Chemiker'', Harri Deutsch 1989, , p. 200.

References

1867 births 1943 deaths 19th-century German chemists Cassella people 20th-century German chemists {{Germany-chemist-stub