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Encyclopedia > Carl Graebe

Carl Gräbe (or Carl Graebe; February 24, 1841 - January 19, German chemist.


Together with Carl Lieberman, he synthesized the orange-red dye alizarin in 1868.


He also introduced the "ortho", "meta" and "para" nomenclature on benzene rings.




  Results from FactBites:
 
Acridine (366 words)
It may be separated by shaking out with dilute sulphuric acid, and then precipitating the sulphuric acid solution with potassium bichromate[?], the resulting acridine bichromate being decomposed by ammonia.
It was first isolated in 1890 by Carl Gräbe and Heinrich Caro[?].
Many synthetic processes are known for the production of acridine and its derivatives.
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