Densities and Viscosities of Fluorinated Alcohols and Fluorinated Ethers

The densities and the viscosities of three fluorinated alcohols and two fluorinated ethers which are expected as promising candidates of CFC alternatives were measured at temperatures from 278 K to 328 K and atmospheric pressure or 0.39 MPa. The fluorinated alcohols used in this study are 2, 2, 3, 3, 4, 4, 4-heptafluorobutanol, 2, 2, 3, 3-tetrafluoropropanol and 2, 2, 3, 3, 3-pentafluoropropanol and the fluorinated ethers are 1-trifluoromethyl-1-methoxy-2, 2, 2-trifluoroethane and 1- (1, 1, 2, 2-tetrafluoroethoxy) -1, 1, 2, 2, 2-pentafluoroethane. The density has been measured by the vibrating tube densitometer (ANTON PARR, DMA 602 HT) within an error of 0.069%. The viscosity has been measured by the torsional oscillation type viscometer (YAMAICHI DENKI, VML VM-M) within an error of 2.2%. The densities decrease monotonically with increase of temperature. Viscosities of these compounds, except for 1- (1, 1, 2, 2-tetrafluoroethoxy) -1, 1, 2, 2, 2-pentafluoroethane, decrease exponentially with increase of temperature.