Pyrrhin

Pyrrhin (Rotstoff) is a beginning of the 19th century term used for a supposedly in rainwater occurring organic compound containing a acidic silver nitrate dyed red solution. Pyrrhin was "discovered" in 1821 by the Giessen chemist Wilhelm Zimmermann while investigating rainwater samples. In the following years, various researchers described the detection of pyrrhin in rainwater samples, u. a. Brandes.

In 1828, the Munich professor Heinrich August Vogel proved that the red color of an acidic silver nitrate solution is caused by various organic substances and that pyrrhin cannot be a single substance. This result was confirmed by Wiegmann in 1829.

Individual evidence

^ Wilhelm Zimmermann: Contributions to the closer knowledge of the watery meteors . In: (Kastner's) archive of the entire theory of nature . tape 1 (3) , 1824, pp. 257-292 .
^ R. Brandes: Contributions to the knowledge of the meteor waters . In: Journal for Chemistry and Physics . tape 48 (2) , 1826, pp. 153-183 .
↑ Vogel: The pyrrhin does not seem to be a peculiar substance . In: (Kastner's) archive for the entire study of nature . tape 15 (1) , 1828, pp. 97-101 .
↑ Wiegmann: About the Pyrrhin; Subsequent remarks on Prof. Vogels Abh. In: (Kastner's) archive for the entire study of nature . tape 16 (2) , 1829, pp. 196-198 .

[1] Wilhelm Zimmermann: Contributions to the closer knowledge of the watery meteors . In: (Kastner's) archive of the entire theory of nature . tape 1 (3) , 1824, pp. 257-292 .

[2] R. Brandes: Contributions to the knowledge of the meteor waters . In: Journal for Chemistry and Physics . tape 48 (2) , 1826, pp. 153-183 .

[3] Vogel: The pyrrhin does not seem to be a peculiar substance . In: (Kastner's) archive for the entire study of nature . tape 15 (1) , 1828, pp. 97-101 .

[4] Wiegmann: About the Pyrrhin; Subsequent remarks on Prof. Vogels Abh. In: (Kastner's) archive for the entire study of nature . tape 16 (2) , 1829, pp. 196-198 .