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NITRO DERIVATIVES OF TOLUENE^287

FIG. 59. Influence of temperature on the yield of DNT. Nitration of o- and p- nitroto-
luenes in nitrating mixtures with various concentrations of sulphuric acid (Kobe.
Skier and Prindle ([32]).

% H 2 SO 4

FIG. 60. Influence of the concentration of sulphuric acid on the yield of DNT.

Nitration of o- and p- nitrotoluenes (Kobe, Skinner and Prindle ([32]).

FIG. 61.influence of temperature and time on the yield of DNT. Nitration of o-

and p- nitrotoluenes (Kobe, Skinner and Prindle ([32]).