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在298.15K下用连续稀释膨胀计或振动管密度计测量了二甲基甲酰胺(DMF)、二甲基乙酰胺(DMA)、N-甲基吡咯烷酮(NMP)、γ-丁内酯(γ-BL)、二甲基亚砜(DMSO)分别与四氯化碳和三氯甲烷构成的二元系的过量体积。除DMSO+CHCl_2二元系的V~(E-x)曲线为S形外,其余二元系的V~E值均为负值。在所研究的两个系列中,|V_(min_~E|的大小顺序均为: NMP>γ-BL>DMF≈DMA>DMSO
Dimethylformamide (DMF), dimethylacetamide (DMA), N-methylpyrrolidone (NMP) and γ-butyrolactone (γ) were measured at 298.15 K using a continuous dilution dilatometer or vibrating tube densitometer -BL), dimethylsulfoxide (DMSO) and carbon tetrachloride and chloroform respectively. The V ~ E values of the other binary systems were all negative except that the V ~ (E-x) curve of the DMSO + CHCl_2 binary system was S-shaped. In the two series studied, | V_ (min_ ~ E | size order are: NMP> γ-BL> DMF ≈DMA> DMSO