アミン-水-苛性アルカリ系の相互溶解度 (第9報)

Amylamine-H₂O-NaOH及びDibutylamine-H₂O-NaOH系

抄録

Mutual solubility of the dibutylamine-water system between 10° and 60° was measured and this solubility curve was found to belong to the upper decreasing miscibility curves. Gelation discovered in the case of heptylamine, was not observed in amylamine or dibutylamine.
Mutual solubility of the amylamine- and dibutylamine-water-sodium hydroxide system was measured. From these results, it was found that a linear relationship existed, within a certain concentration range, between the amine concentration (molar fraction) in the upper layer and that of sodium hydroxide (molar fraction) in the lower layer. Empirical formula of these straight lines was obtained and the slope of the straight line in the case of amylamine showed approximately the same value as those of butylamine and heptylamine.