Deliquescence Behavior of Deep Eutectic Solvents

Deep eutectic solvents (DESs) are formed by a hydrogen bond donor and an acceptor. The interactions between these two components significantly depress the melting temperature of mixture. DESs have been used as alternative for organic in various branches chemical industry. Many very hygroscopic water is known to change properties DESs, but there has neven systematic study performed on deliquesence behavior DESs. Therefore, this investigated thermal deliquescent four DES mixtures were stored desiccators at different relative humidities (RH) investigate critical RH (RH0) deliquescence. It was found that, due formation eutonic mixture, RH0 induce deliquescence given mixture lower compared individual comprising DES. results showed even though all had temperatures above room temperature, low RH0, they able appear liquid under ambient conditions. compositions identified emphasize that great care must be taken control process storage conditions