The manufacture of intermediate products for dyes (1919)
Cain, John Cannell, 1871-1921 · London, Macmillan · leaf 45
30 INTERMEDIATE PRODUCTS FOR DYES is measured at 4 by means of a hydrometer, from the readings of which the flow of benzene and mixed acid is regulated, and thermometers are inserted at various points of the apparatus. As will be seen from Fig. 11, tower I contains four independent cooling coils. … FIG 12. The manufacture of nitrobenzene by using sodium nitrate (the method used originally by Perkin) instead of nitric acid is described by the Saccharinfabrik, A.-G. vorm. Fahlberg, List & Co. (F.P., 401679 ; G.P., 221787). One hundred and fifty
Dyes and dyeing -- Chemistry
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
