The Synthetic Dyestuffs And the Intermediate Products From Which They Are Derived
The book The Synthetic Dyestuffs And the Intermediate Products From Which They Are Derived was written by author John Cannell Cain Here you can read free online of The Synthetic Dyestuffs And the Intermediate Products From Which They Are Derived book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Synthetic Dyestuffs And the Intermediate Products From Which They Are Derived a good or bad book?
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This is done by heating in a suitable bath of water, solution of calcium chloride, or oil, which is kept at the right temperature by means of a thermo-regulator. This is arranged as follows : — A glass tube about 8-10 mm. in diameter is bent in the form of a circle and closed at one end. Tlie open end is sealed to a fairly wide capillary tubing which is bent up at right angles to the circular tube. This latter rests on the bottom of the bath, and the capillary tube passes up the side and is aga...in bent at right angles over the side of the bath ; it is here united with the gas regulator. This consists of a U-tube with side branches on each limb, and one end is closed by a tap carrying a small thistle funnel (see fig, 3). Mercury is poured into the tube to the height shown, and the regulator is connected to the circular tube by one of the side-tubes, while the other is connected with the burner by means of a piece of rubber tubing. The glass tube conveying the gas to the regulator passes into the limb till it just touches the surface of the mercury, and the lower end is cut at an acute angle, so that as the mercury rises and falls the flow of gas is gradually regulated.
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