Determination of radicles in carbon compounds / by Dr. H. Meyer. Authorized translation by J. Bishop Tingle.
- Meyer, Hans (Hans Johannes Leopold), 1871-
- Date:
- 1903
Licence: In copyright
Credit: Determination of radicles in carbon compounds / by Dr. H. Meyer. Authorized translation by J. Bishop Tingle. Source: Wellcome Collection.
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![molecular rearrangement of diazonium derivatives, it is desirable to reduce the time required to expel the air from the apparatus and to avoid the necessity for work- ing at o°. The apparatus shown in Fig. 16 is de- signed to accomplish this. It has been used with great success for the determination of diazo nitrogen in diazoamino derivatives.1 It consists of a thin-walled test tube 10-12x31 cm. The tubes are inserted flush with the rubber stopper. The substance is placed in the tube, the leg of the funnel, which is drawn to a fine point, is filled with recently boiled water. The tube d is connected with an air-pump, c with a car- bonic anhydride apparatus, and a with a eudiometer; b is a three-way cock ; a is closed, the apparatus exhausted, carbonic anhydride introduced, and the exhaustion and introduction of carbonic anhydride repeated twice more. The air in a is then expelled by a very rapid 1 H. Mehner, J. pr. 63 [2] (1901), 304.](https://iiif.wellcomecollection.org/image/b28049123_0144.jp2/full/800%2C/0/default.jpg)
