Siwoloboff *s method

Boiling point, experimental determination of, 83-86, 230, 1027 by Emich s method, 86 by Siwoloboff s method, 85... 

In addition to the orthodox method, just described, for the determination of the boiling points of liquids, the student should determine the boiling points of small volumes (ca. 0-5 ml.) by Siwoloboff s method. Full details are given in Section 11,12. Determine the boiling points of the pure liquids listed in the previous paragraph. Observe the atmospheric pressure and if thus differs by more than 6 mm. from 760 mm., correct the boiling point with the aid of Table II,9,B. Compare the observed boiling points with the accepted values, and draw a calibration curve for the thermometer. 

Determination of boiling points. Distillation method (Fig. II, 12,1) for carbon tetrachloride (25 nM. distillation flask and small water condenser), and Siwoloboff s method (Fig. II, 12,2) for carbon tetrachloride, aniline and nitrobenzene. Calibration curve for thermometer. Determination of h.p. of unknown liquid. 

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