Excess Molar Volumes and Viscosities for Binary Mixtures of 1‐Alkoxypropan‐2‐ols with 1‐Butanol, and 2‐Butanol at 298.15 K and Atmospheric Pressure

Abstract Excess molar volumes VmEand kinematic viscosities ν have been measured as a function of composition for binary mixtures of propylene glycol monomethyl ether (1‐methoxy‐2‐propanol), MeOCH2CH(OH)Me, propylene glycol monoethyl ether (1‐ethoxy‐2‐propanol), EtOCH2CH(OH)Me, propylene glycol monopropyl ether (1‐propoxy‐2‐propanol), PrOCH2CH(OH)Me, propylene glycol monobutyl ether (1‐butoxy‐2‐propanol), BuOCH2CH(OH)Me, and propylene glycol tert‐butyl ether (1‐tert‐butoxy‐2‐propanol), t‐BuOCH2CH(OH)Me with 1‐butanol, and 2‐butanol, at 298.15 K and atmospheric pressure. The excess molar volumes are negative across the entire range ofcomposition for all the systems with 1‐butanol, and positive for the systems 2‐butanol+1‐methoxy‐2‐propanol, and +1‐propoxy‐2‐propanol, negative for the systems 2‐butanol+1‐butoxy‐2‐propanol, and change sign for the systems 2‐butanol+1‐ethoxy‐2‐propanol, and +1‐tert‐butoxy‐2‐propanol. From the experimental data, the deviation in dynamic viscosity η from Δxiηi has been calculated. Both excess molar volumes and viscosity deviations have been correlated using a Redlich‐Kister type polynomial equation by the method of least‐squares for the estimation of the binary coefficients and the standard errors.