Bubble Point Measurements of Neopentane + Ethane Mixtures.

Bubble point measurements have been taken on three compositions of the neopentane + ethane system. The results are modeled with a Peng-Robinson equation with symmetrical mixing rule and a Helmholtz-energy-based 4-parameter model. Interaction parameters for all fits are provided. The results are consistent with other similar mixture systems (neopentane + propane and ethane + pentane) and demonstrate near ideal mixing.