Method for obtaining spheroidal 3-nitro-1,2,4-triazol-5-one

摘要

the subject of the invention is a method for ductile 3 - nitro - 1,2,4-triazole - 5 - one of successively output 3 - nitro - dissolving 1,2,4-triazole - 5 - one of any crystalline form in hot mixture of solvents containing water, at least one solvent or ganiczny and surfactant, the crystallization of 3 - nitro - 1,2.4 - triazol - 5 - one from this mixture by cooling, and then separating the wykrystalizowanego ductile 3 - nitro - 1,2,4-triazole - 5 - one from the remaining mixture, preferably by filtration.application of hot mixture dissolving 3 - nitro - 1,2,4-triazol-5 - he, containing the above components and two-step cooling - successively rapid using heat exchanger and free - enables sferoidalnych crystals of 3 - nitro - 1,2,4-triazole - 5 - one of the low porosity and medium size range 100 mm to 350 mm.