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. Griffin and company, limited · leaf 202
e feet long is used; and above 280° the THR TECHNICAL LABORATORY. 1B5 distillation is usually carried on under diminished pressure. When, however,the distillation is carried on very slowly (as in the distillation of crude benzenefor testing purposes), an uncooled tube is used. Distillation of pure… … (straight tube or Liebi<rs) by means of a cork (fig. 4). No rubber corks shouldbe used in any part of the apparatus. The liquid is placed in the flask so thatthe latter is not more than two-thirds full, and a small piece of porous poi-celaindropped in, so as to induce regular boiling. The liquid…
Dyes and dyeing
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