M-Nitrotoluene,

AMENES - AMINES,AROMTATIC - DIAMINOTOLUENES] (Vol2) m-Nitrotoluene [99-08-1]... 

If an unfractionated mixt of the mononitro-toluene isomers is used (ie, the product of straight nitration of toluene), TNT with a mp of 78.7° is produced. If the starting material is free from m-nitrotoluene, TNT with a mp of 80.6° is claimed... 

Additional 14C-tracer studies were conducted to determine the specific isomer participation for TeNMe formation. In the dinitration mixt there are six isomers present 2,4-, 2,6-, 2,3-, 2,5-, 3,4- and 3,5-Dinitrotoluene (DNT). It was observed that 83% of the TeNMe formed from carbon-1 came from the DNT isomers derived from m-Nitrotoluene. The relative participation of DNT isomers for TeNMe formation is summarized in Table 1... 

Molar ratios of bromine to m-nitrotoluene ranging from 0.25 to 1.00 were applied. The reactants were contacted in an interdigital micro mixer followed by a capillary reactor. At temperatures of about 200°C nearly complete conversion is achieved (see Fig. 6). The selectivity to the target product benzyl bromide is reasonably high (at best being 85% at 200°C and higher being 80%). The main sideproduct formed is the nitro-substituted benzal bromide, i.e. the two-fold brominated side-chain product. 

Nitropropane m-Nitrotoluene o-Nitrotoluene p-Nitrotoluene Nonyl phenol Octane Octanoic acid... 

The 60 still base was a 45.5 m3 horizontal, cylindrical, mild steel tank 7.9 m long and 2.7 m diameter. The still was used to separate a mixture of the isomers of mononitrotoluene (MNT), two of which (o-nitrotoluene and m-nitrotoluene) are liquids at room temperature and third (p-nitrotoluene) a solid. Other byproducts were also present, principally dinitrotoluene and nitrocresols. It is well known in the industry that these nitro compounds can be explosive in the presence of strong alkali or strong acid, but in addition explosions can be triggered if they are heated to high temperatures or held at moderate temperatures for a long period. 

Although practically important in other cases, the replacement of an NH2-group by hydrogen via the diazo-compound naturally has none in the example here given. Thus m-nitrotoluene (and from it m-toluidine) is obtained from p-toluidine by nitration of the acetylated base and replacement of the NH2-group (after elimination of the acetyl) by H, as shown above. 

Nitrostigmine, see Parathion Nitrostygmine, see Parathion o-Nitrotoluene, see 2-Nitrotoluene m-Nitrotoluene, see 3-Nitrotoluene p-Nitrotoluene, see 4-Nitrotoluene... 

Fig. 7.11 Wake configurations for drops in water (highly purified systems), reproduced from Winnikow and Chao (W8) with permission, (a) nonoscillating nitrobenzene drop = 0.280 cm, Re = 515 steady thread-like laminar wake (b) nonoscillating m-nitrotoluene drop 4 = 0.380 cm. Re = 688 steady thread accompanied by attached toroidal vortex wake (c) oscillating nitrobenzene drop 4 = 0.380 cm. Re = 686 central thread plus axisymmetric outer vortex sheet rolled inward to give inverted bottle shape of wake (d) oscillating nitrobenzene drop = 0.454 cm. Re = 775 vortex sheet in c has broken down to form vortex rings (e) oscillating nitrobenzene drop d = 0.490 cm. Re = 804 vortex rings in d now shed asymmetrically and the drop exhibits a rocking motion.

If after the reaction the alcohol be distilled off without the use of a column it will contain an appreciable quantity of m-nitrotoluene, amounting to 5 or more per cent of the yield. The use of an oil or brine bath is recommended on account of the presence of solid inorganic salts in the mixture. 

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