Artificial dye-stuffs; their nature, manufacture, and uses (1917)
Ramsey, Albert R. J, Weston, H. Claude (Hubert Claude) · London, Routledge; New York, Dutton · leaf 41
of great importance to the dyemanufacturer, as it is the starting-point in thg 26 COAL AND COAL-TAR manufacture of artificial indigo, its derivatives alsobeing employed as constituents of many other dye-stuffs.Naphthalene is purified by being dissolved in sulphuricacid and distilled, or by… … rHAPKTHALENE SUBLIMIMG CHAMBER DISCHARGEOOOR i iI Fig. 6 wy/m/mmmwm^^ sublime on its walls, being subsequently removedthrough the discharge door shown. After sublimationthe naphthalene is recrystallised by being dissolved inpetroleum in steam-heated enamelled iron pans, towhich are connected reflux…
Dyes and dyeing
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