Von Meyer

New occurrences of selenium were found in rapid succession. J. E. F. Giese of Dorpat, Pleischl of Prague, B. Scholz of Vienna, W. Meissner, J. G. Children, and H. von Meyer all found it in the deposits from various kinds of sulfuric acid. Pleischl detected it in the molybdenite of Schlag-genwald F. Stromeyer, in the volcanic sal ammoniac from the Lipari Islands R. Brandes, in the volcanic sal ammoniac of Lanzarote Island (32). Stromeyer and J. F. Hausmann, DuMenil, J. B. Trommsdorff, J. K. L. Zincken, and Heinrich Rose detected its presence in several minerals (33, 34). 

After the addition of acetonitrile the mixture is refluxed for 3 hr or longer until, in cooling, the sodium salt or 3-iminobutyronitrile and sodium cyanide crystallize from the reaction mixture. The product salts are filtered, suspended in 1 liter of ether, and water is slowly added until the salts dissolve. The ether layer is separated, dried, and the ether removed by atmospheric distillation. After a few hours the residue crystallizes to yield 121 gm (49.7 %) of crude product. Recrystallization from benzene yields 91 gm (37.4%), m.p. 63°-71°C. Von Meyer [19d] has reported that this compound exists in a stable form with m.p. 50°-54°C, and in a labile form, m.p. 79°-84°C. 

Bleaching powder has been the subject of numberless researches made with the object of arriving at its constitution, and it may be said that in spite of all these efforts, there is no other substance of equally simple composition regarding whose nature and composition so much doubt prevails. —E. von Meyer (1889). 

Drasch G, Dahlmann F, von Meyer L et al (2008) Frequency of different anti-depressants associated with suicides and drug deaths. Int J Legal Med 122 115-121... 

Reproduced by permission p. 82 Landfill with aluminum drum for mercury waste, photograph. Recio/Greenpeace. Reproduced by permission p. 83 Ritalin tablets, photograph. Photo Researchers, Inc. Reproduced by permission p. 85 Lothar von Meyer, Julius, photograph. Photo Researchers, Inc. Reproduced by permission p. 86 Millikan, Robert A., photograph. The Library of Congress p. 88 Stratas of banded liassic limestone and shale on a seacliff by... 

G. Drasch, E. Kretschmer, G. Kauert and L. von Meyer, Concentrations of mustard gas [bis(2-chloroethyl)sulfide] in the tissues of a victim... 

Acrolein, CH2 0H-CH0, according to E. von Meyer,6 is formed when ethylene with an excess of oxygen is exploded in a eudiometer. 

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