Abstract
Mutual solubility of the diethylene glycol-water-butanol and triethylene glycol-water-butanol systems was measured at 20° and 40°. It was thereby found that the mutual solubility of these systems increased with increase of temperature, as in the case of monoethylene glycol-water-butanol system, though the solubility itself was somewhat greater than the latter. The difference in the solubilities between the two systems was very small. Comparison of the distribution curves of these three systems showed that glycol was distributed largely in the aqueous phase, especially at low temperatures and that lower glycols were distributed in a larger amount. The tie-line data of these systems at 20° and 40° were obtained from the measurement of their refractive indices and were found to be linear.
