Johann Heinrich Gravenhorst

Johann Heinrich Gravenhorst (born October 20, 1719 in Braunschweig ; † April 14, 1781 there ) was a German businessman and chemist .

life and work

Gravenhorst was initially a merchant in Celle . After taking over a brewery, he went into business for himself, but gave it up again. After several trips, he founded the “ Chemische Fabrik Gebrüder Gravenhorst ” in Braunschweig with his younger brother Christoph Julius Gravenhorst (1731–1794) in 1759 (according to other information 1761/62) . For this purpose, the brothers acquired the grounds of the Johannishof , a former property of the Johanniter in the Braunschweig city center .

In addition to the main product " Braunschweiger Salmiak " (from 1762), Glauber's salt (since 1769), "Red Braunschweiger Alaun " (since 1767) and the green paints and paints " Braunschweiger Grün " (since 1767), a basic copper chloride, invented by the brothers , manufactured and distributed throughout Europe. After his death, the younger brother continued to run the company. In the 1820s the company ceased.

The Gravenhorst salmiak factory built on the former Johanniter property was the first in Germany. The painters' paint Braunschweig green was very well known in the 18th and 19th centuries and was also produced elsewhere.

literature

Horst-Rüdiger Jarck , Günter Scheel (Ed.): Braunschweigisches Biographisches Lexikon - 19th and 20th centuries . Hahnsche Buchhandlung, Hannover 1996, ISBN 3-7752-5838-8 , p. 275-276 .
Norman-Mathias Pingel: Gravenhorst brothers. In: Luitgard Camerer , Manfred Garzmann , Wolf-Dieter Schuegraf (eds.): Braunschweiger Stadtlexikon . Joh. Heinr. Meyer Verlag, Braunschweig 1992, ISBN 3-926701-14-5 , p. 92 .
Karl Karmarsch : Gravenhorst, Johann Heinrich . In: Allgemeine Deutsche Biographie (ADB). Volume 9, Duncker & Humblot, Leipzig 1879, p. 615.

Web links

Commons : Johann Heinrich Gravenhorst - Collection of images, videos and audio files

Works by and about Johann Heinrich Gravenhorst in the German Digital Library
Publications by and about Johann Heinrich Gravenhorst in VD 18 .
Search for Johann Heinrich Gravenhorst in the SPK digital portal of the Prussian Cultural Heritage Foundation

Individual evidence

^ August Friedrich Wilhelm Crome : Geographical-statistical representation of the state forces of all the countries belonging to the German confederation . III. Part. Gerhard Fleischer, Leipzig 1827, p. 27 .

personal data
SURNAME	Gravenhorst, Johann Heinrich
BRIEF DESCRIPTION	German chemist and entrepreneur
DATE OF BIRTH	October 20, 1719
PLACE OF BIRTH	Braunschweig
DATE OF DEATH	April 14, 1781
Place of death	Braunschweig

[1] August Friedrich Wilhelm Crome : Geographical-statistical representation of the state forces of all the countries belonging to the German confederation . III. Part. Gerhard Fleischer, Leipzig 1827, p. 27 .