The synthetic dyestuffs : and the intermediate products from which they are derived (1905)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872-1940 · London : C. Griffen and Co. · leaf 208
bber tubing carrying a screw-clip. In carrying out a vacuumdistillation in such a flask, the clip is opened slightly in order to allow a finestream of air-bubbles to be drawn through the liquid—an arrangement whichis often used to prevent irregular boiling. For the distillation of solids a flask… … Fig. 10. two mercury columns gives the pressure. The complete apparatus for distillingin vacuum is shown in fig. 10. The distilling apparatus is best put together with rubber corks. Ordinarycorks, however, may be made quite tight by coating them when in position withcollodion. The flask, which…
Dyes and dyeing
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