Reference Correlation for the Viscosity of Liquid Toluene from 213 to 373 K at Pressures to 250 MPa

A correlation in terms of temperature and molar volume is recommended for the viscosity of liquid toluene as a reference for high-pressure viscosity measure- ments. The temperature range covered is from 213 to 373 K, and the pressure range from atmospheric up to 250 MPa. The standard deviation of the proposed correlation is 1.360, and, within a 950 confidence limit, the error is 2.70. It is estimated that for densities up to 920 kg } m&3 the uncertainty of the viscosity values generated by this correlation is about \20.