STUDY OF THE SOLUBILITY OF SAMPLES OF PARA-TERPHENYL IN CHLOROFORM AND TOLUENE AT DIFFERENT TEMPERATURES
In this work, studies have been carried out to study the solubility of para-terphenyl in chloroform and toluene at various temperatures. The studies were carried out using the gravimetric analysis method. It was shown that in all cases, the solubility of paratherphenyl in organic solvents increased with increasing temperature. Thus, at a temperature of 30 ° C, 5.6 g/l of paratherphenyl was completely dissolved in chloroform, and at 70 ° C - 9.7 g/l of this compound. For toluene having a higher boiling point, the solubility of para-terphenyl at 30 °C was 13.5 g/l, and at 90 °C - 12.1 g/l. Mathematical processing of the obtained results allowed us to reveal the linear dependence of the solubility of the target product on temperature. The results will be used to carry out the process of purification of para-terphenyl by recrystallization.