Department of Chemestry
Short biography and Publications by Richard Ehrenstein (1871-1929)
Short biography
| 1871 | Born on 11. July 1871 in Berlin |
| 1901 | pharmaceutical state examination in Erlangen |
| 1902-1904 | Assistant of the agricultural control station, officially recognized food office, Göttingen |
| 1904 | Main examination for food chemists in Göttingen |
| 1904-1906 | Doctoral studies with Paul Rabe in Jena |
| 1906 | Promotion with Paul Rabe in Jena |
| 1906-1906 | Assistant at the municipal food inspection office in Krefeld |
| 1907-1907 | Chairman of the chemical laboratory of Fröhlich & Co, Zeitz |
| 1907-1908 | Representative of the owner, then head, of the Food Inspection Office in Harburg |
| 1908-1908 | Food testing for the city district of Ratibor |
| 1909-1909 | Assistant in the chemical laboratory of Dr. Paul Lawaczeck, official investigation office, Limberg |
| 1909-1911 | Practice of food inspection and testing in Pirmasens |
| 1911-1911 | Assistant at the Chemical Laboratory and Institute for Microscopy, Food and Drink Research Center, Dr. Weiß and Dr. Laband, Berlin |
| 1911-1914 | first assistant in the chemical laboratory of Dr. Paul Stephan Behrend, Hamburg |
| 1915-1918 | Scientific assistant at the State Chemical Laboratory in Hamburg |
| 1915-? | substitute teacher of chemistry at the secondary school in St. Georg |
| 1918-1929 | scientific assistant at the State Chemical Laboratory in Hamburg |
| 1928-1929 | Head of the examination office of the State Chemical Institute in Hamburg |
| 1929 | died on April 22, 1929 |
Publications
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| Search: Chemistry Dep. / all Hamburg | |
| 1929 | |
| 8 |
Ueber die Vorschriften des D.A.B.6 für Salbenfette und Salbenöle (German Pharm. standards for salve fats and oils) Richard Ehrenstein Apotheker-Zeitung 44, 197-198 (1929) |
| 7 |
Über die Verwendungsmöglichkeiten des Wollfettes (The applicabilities of wool fat) Richard Ehrenstein Seifensieder-Zeitung 56, 297-298 (1929) |
1923 | |
| 6 |
Über die Arachinsäure, die Isobehensäure und die normale Eikosansäure (Arachidic acid, isobehenic acid and normal eicosanic acid) Richard Ehrenstein, Friedrich Henry Stuewer Journal für Praktische Chemie 105, 199-207 (1923) |
1921 | |
| 5 |
Der praktische Chemiker, Sammlung belehrender Unterhaltungsschriften Richard Ehrenstein -/- Editor: Hans Vollmer Sammlung belehrender Unterhaltungsschriften - Am Scheidewege, Berufsbilder 77, 1-76 (1921), Publisher: Hermann Paetel Verlag, Berlin-Wilmsdorf |
1908 | |
| 4 |
Zur Kenntniss der 1,5-Diketone. Ueber die Umlagerung von 1,5-Diketonen in cyklische Ketonalkohole und über die Synthese bicyklischer Ketonalkohole mit Brückenbindung (Transformation of 1,5-Diketones into Cyclic Ketone Alcohols and the Synthesis of Bicyclic Ketone Alcohols with Bridge Linkage) Paul Rabe, Richard Ehrenstein, Max Jahr Justus Liebigs Annalen der Chemie 360, 265-288 (1908) |
| 3 |
Beiträge zur Aufklärung der Tautomerieerscheinungen. Ueber die desmotropen Formen des Methylcyklohexeondicarbonsäureesters (Desmotropic Forms of Ethyl Methylcyclohexenonedicarboxylate) Paul Rabe, David Spence, Richard Ehrenstein Justus Liebigs Annalen der Chemie 360, 289-298 (1908) |
1907 | |
| 2 |
Über die isomeren Formen des 3-Methyl-cyclohexenons (Isomeric Forms of 3-Methylcyclohexenone) Paul Rabe, Richard Ehrenstein Berichte der Deutschen Chemischen Gesellschaft 40, 2482-2489 (1907) |
1906 | |
| 1 |
Beiträge zur Aufklärung der Isomeriefrage beim Methylcyklohexenon und dessen Dicarbonsäureester Richard Ehrenstein -/- Supervisor: Paul Rabe Dissertation, Jena (1906) |