Abstract
Water-N,N-dimethylformamide mixtures show viscosity maxima near 30 mole percent DMF at all temperatures studied, whereas the viscosity of water-formamide mixtures is an increasing monotonic function of the mole percent formamide in the mixtures. This fundamental difference in their viscosity behavior must be attributed mainly to differences in the hydrogen bonding characteristics of the two amides. In spite of this difference, the effect on the viscosity of added NaI to these two aqueous mixtures is surprisingly similar over the temperature range studied.
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Taniewska-Osinska, S., Piekarska, A. & Kacperska, A. Viscosities of NaI in water-formamide and water-N,N-dimethylformamide mixtures from 5 to 45°C. J Solution Chem 12, 717–727 (1983). https://doi.org/10.1007/BF00647383
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DOI: https://doi.org/10.1007/BF00647383