Densities, Excess Molar Volumes, Viscosities, Speeds of Sound, Excess Isentropic Compressibilities, and Relative Permittivities for C m H 2 m +1 (OCH 2 CH 2 ) n OH ( m = 1 or 2 or 4 and n = 1) + Benzene, + Toluene, + ( o -, m -, and p -) Xylenes, + Ethylbenzene, and