Has anyone experienced using diphenyl ether biphenyl eutectic?

If the diphenyl ether-biphenyl eutectic does not solidify or crystallize upon cooling to 5°C, it indicates that this temperature is still above their freezing point or eutectic point. Based on your description, other methods may need to be used to recover this solvent. First, you can try to lower the temperature further and check whether solidification or crystallization can occur at lower temperatures. Secondly, if cooling is not feasible, then distillation can be considered as a method for separation and recovery. During the distillation process, it is necessary to control the rate of temperature increase and the operating conditions of the distillation tower, so that diphenyl ether and biphenyl evaporate at their respective boiling points, and are then condensed for recovery. Furthermore, since your reaction is a high-temperature reaction, the solvent after filtration may contain other reaction products or impurities; therefore, pre-treatment such as activated carbon adsorption, ion exchange, extraction, etc., may be necessary to purify the solvent before carrying out the aforementioned recovery process. It is recommended to first gain a thorough understanding of the physicochemical properties of diphenyl ethers and biphenyls, as well as the characteristics of any eutectic systems that may form, before proceeding with solvent recovery. This will help determine the most suitable methods for separation and purification. Furthermore, safety is also of great importance; please ensure that the entire process complies with laboratory safety standards. .