The synthetic dyestuffs and the intermediate products from which they are derived (1920)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872- · London : C. Griffin · leaf 240
*Refr;iction- ated— C. . 12 c.c. 7 c.c. E\ . G c.c. 5 c.c. 5 c.c. 54 c.c. 7 c.c. 50 c.c. 6 c.c. 27 c.c. 42 c.c. THE TECHNICAL LABORATORY. 215 Distillation in a vacuum.1—Liquids boiling at a high temperature underthe ordinary pressure are usually distilled under diminished pressure in orderthat the… … Fig. 5. The side-tube of the flask forming the receiver is connected with the pump,and a thermometer is fitted into the neck of the other flask. To prevent bumping a small piece of porous porcelain is put into the liquid. As a good deal of foaming takes place when distilling under reduced…
Dyes and dyeing
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