Solubility measurements of glucose in a variety of binary, ternary, and multicomponent mixtures containing 2-methyl-2-butanol, dimethyl sulfoxide, acids, esters, and water at different temperatures are presented. The solubilities of crystalline -glucose, amorphous -glucose, and amorphous -glucose in 2-methyl-2-butanol at 60°C have also been measured. The results show that the solubilities of the amorphous forms in 2-methyl-2-butanol are higher than that of the corresponding crystalline form. The presence of dimethyl sulfoxide significantly increases glucose solubility in 2-methyl-2-butanol. Finally, the presence of glucose ester increases glucose solubility in 2-methyl-2-butanol, while the presence of fatty acid has the opposite effect.
Solubility measurements of fatty acid esters of glucose and sucrose in pure 2-methyl-2-butanol and mixtures of 2-methyl-2-butanol with dimethyl sulfoxide are presented. For glucose esters the increase of the fatty acid chain length from C8 to C12 leads to an about 3-fold solubility decrease in 2-methyl-2butanol at 30 °C and 60 °C, while a slight increase is observed for sucrose monoesters. The presence of dimethyl sulfoxide increases the solubility of the esters in 2-methyl-2-butanol. Sucrose dilaurates were 4-fold more soluble than the corresponding monoesters in 2-methyl-2-butanol and in the mixture of 2-methyl-2-butanol with dimethyl sulfoxide.
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