Density and Viscosity Measurements for Binary Mixtures of 1-Ethyl-3-methylimidazolium Tetrafluoroborate ([Emim][BF4]) with Dimethylacetamide, Dimethylformamide, and Dimethyl Sulfoxide Fan, X.H.; Chen, Y.P.; Su, C.S.; Journal of Chemical & Engineering Data 2016, 61, 920-927