Eugen de Haën was a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 chemist

Chemist

A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 and founder of the chemistry factory E. de Haën. After studying in Heidelberg

Heidelberg

-Early history:Between 600,000 and 200,000 years ago, "Heidelberg Man" died at nearby Mauer. His jaw bone was discovered in 1907; with scientific dating, his remains were determined to be the earliest evidence of human life in Europe. In the 5th century BC, a Celtic fortress of refuge and place of...

 under the supervision of Kirchhoff

Gustav Kirchhoff

Gustav Robert Kirchhoff was a German physicist who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects...

 and Bunsen

Robert Bunsen

Robert Wilhelm Eberhard Bunsen was a German chemist. He investigated emission spectra of heated elements, and discovered caesium and rubidium with Gustav Kirchhoff. Bunsen developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organoarsenic...

, de Haën worked in several chemical factories. In 1861 he founded the E. de Haën company in Linden and later in List, two small villages close to Hanover. The railway and the possibility to have access to the Mittellandkanal he changed the location of his company to Seelze

Seelze

Seelze is a town in the district of Hanover, in Lower Saxony, Germany. It is situated on the river Leine, approx. 10 km west of Hanover. Today Seelze mainly plays the role of a bedroom town for commuters working in Hanover.-Division of the town:...

 east of Hanover in 1902. After significant expansion the company J. D Riedel bought the company in 1926 and changed the name of the combined companies to Riedel-de Haën. The company changed owners several times in his long history, but chemicals are still produced in Seelze.