超额黏度(excess viscosity)是指混合溶剂的粘度减去各组分独立时的粘度与其摩尔比的乘积的和。 nE=n-x1n1-x2n2 ^ Crabtree, A. M.; O'Brien, J. F. et al . (1991). "Excess viscosities of binary mixtures of chloroform and alcohols". Journal of Chemical Engineering Data 36 (2): 140-142. doi : 10.1021/je00002a003 ^ Rodríguez, S.; Lafuente, C.; Carrión, J. A.; et al . (1996). "Excess volumes and excess viscosities of binary mixtures of some cyclic ethers + bromocyclohexane at 298.15 and 313.15 K". International Journal of Thermophysics 17 (6): 1281-1288. doi : 10.1007/bf01438670