THE TRANSPORT-PROPERTIES OF ETHANE .1. VISCOSITY

A new representation of the viscosity of ethane is presented. The repr esentative equations are based upon a body of experimental data that h ave been critically assessed for internal consistency and for agreemen t with theory in the zero-density limit, vapor phase, and critical reg ion. The representation extends over the temperature range from 100 K to the critical temperature in the liquid phase and from 200 K to the critical temperature in the vapor phase. In the supercritical region, the temperature range extends to 1000 K for pressures up to 2 MPa and to 500 K for pressures up to 60 MPa. The ascribed accuracy of the repr esentation varies according to the thermodynamic state from +/-0.5% fo r the viscosity of the dilute gas near room temperature to +/-3.0% for the viscosity at high pressures and temperatures. Tables of the visco sity, generated by the relevant equations, at selected temperatures an d pressures and along the saturation line, are also provided.