| abstract |
FIELD: chemistry. n SUBSTANCE: disclosed is a method of producing mono- or disazo dyes based on methyl phloroglucinol (MPG), involving azo coupling of MPG and a diazonium salt at temperature (-)5 -(+)10°C, pH from less than 1 to 8 and molar ratio of MPG to the diazonium salt between 1:1 and 1:2. n EFFECT: recycling trinitrotoluene using an environmentally and technologically acceptable method to obtain dyes based on MPG with high output and high selectivity, having high resistance to physical and chemical effects compared to analogues on structure and application, for example, azo dyes based on p-cresol. n 3 tbl, 15 ex |