| 摘要 |
FIELD: chemistry.SUBSTANCE: octanite is obtained by interaction of 2,4,6-trinitrochlorobenzene with 1,5-dichloro-2,4-dinitrobenzene by Ullmann reaction in dichloroethane medium in presence of dimethylformamide. Mixture of initial 2,4,6-trinitrochlorobenzene and 1,5-dichloro-2,4-dinitrobenzene in dichloroethane solution is prepared by successive combined nitration of 2-2.2 mol of 2-nitrochlorobenzene at 140°C for 3 hours and further in the same reaction mass - 1 mol of 1,5-dichlorobenzene at 90°C for 1.5 hours with mixture, containing 98% nitric acid and 104% oleum. Dichloroethane solution is washed with water and dehydrated (dried) by distillation of azeotrope dichloroethane+water under atmospheric pressure to water content in solution not higher than 0.2% and solution density 1.32 g/cm. To separate octanite from mixture of condensed products of Ullmann reaction sulphuric-nitric acid mixture from obtaining initial components is used.EFFECT: invention makes it possible to create safe technological method of octanite obtaining, reduce staging, reduce amount of liquid acidic and organic wastes.2 cl, 2 ex |
