Excess Volumes of 1-Butanol, 2-Butanol, 2-Methylpropan-1-ol, and 2-Methylpropan-2-ol with Xylenes at 308.15 K

The excess volumes V E for 1-butanol or 2-butanol or 2-methylpropan-1-ol or 2-methylpropan-2-ol + o -xylene or m -xylene or p -xylene at 308.15 K have been measured over the whole range of composition. The V E vs composition curves are skewed toward the low concentration of butanol. For systems containing 1-butanol curves are sigmoids and V E values change sign in the 1-butanol (1) rich region ( x 1 > 0.8). For butanol + xylene systems V E values vary in the order 2-methylpropan-2-ol > 2-butanol > 2-methylpropan-1-ol > 1-butanol.