Explosives . d ata time in capacious tanks and allowed to settle. The benzene is introducedinto the pan and the agitators are revolved at about 60 revolutions per minute,and then the acid is run in in a thin stream, the temperature not being allowed torise above 60°C. After the whole of the acid has been introduced, agitationis continued for a further 4| hours to complete the nitration. The wasteacid should then contain less than 1 per cent, of nitric acid. The contentsof the pan are then allowed to settle, and the waste acid is run into the eggX, and blown up through the pipe V to the waste a
Explosives . d ata time in capacious tanks and allowed to settle. The benzene is introducedinto the pan and the agitators are revolved at about 60 revolutions per minute,and then the acid is run in in a thin stream, the temperature not being allowed torise above 60°C. After the whole of the acid has been introduced, agitationis continued for a further 4| hours to complete the nitration. The wasteacid should then contain less than 1 per cent, of nitric acid. The contentsof the pan are then allowed to settle, and the waste acid is run into the eggX, and blown up through the pipe V to the waste acid tank by admitting com-pressed air through U. The nitro-benzene is similarly run into X, and blownup through the pipe S into the wash-pan B, where it is washed first with 253 EXPLOSIVES soda solution and then with water, air being blown in through the pipe P toagitate the liquids. After settling, the nitro-benxene ifi run to a storage maximum theoreticalyield from 101 .f benzene is 157-6, and the. 51. i;>inmiWjiiwmi^i ii fuMniiM lunnininiBenzene Nitrating Plant. (From TL :: • - Dick Oltarff ry) actual yield should not be le>> than 154-5. The nitrobenzene can be furtherpurified by distillation in vacuo. Nitrobenzene < H V • - yellow oil slightly volatile at the ordin- ary temperature and having a characu-ri-tk- odour. It is slightly poisonous,but is used for perfumery and flavouring under the name of oil of atmospheric pressure it h _ b freeses with i me difficulty. NITRO-DERIVATIVES OF AROMATIC HYDROCARBONS 255 and melts at 3-6°. Although its use has often been proposed as an ingre-dient of various explosives it has not been so used very extensively, as itsvolatibility is objectionable, and there are other nitro-compounds availablewhich have more decided explosive properties. It has, however, been usedas an ingredient of Sprengel explosives and to reduce the freezing-point ofnitro-glycerine. It is practically insoluble in
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Keywords: ., bookcentury1900, bookdecade1910, bookidexp, booksubjectexplosives
