Co2 freezing point with Prode Properties

[stawad]

I am calculating Co2 (in natural gas) freezing point with Prode Properties,
according your experience which is the correct option as thermo package ?
Peng Robinson and Soave Redlich Kwong packages give quite equivalent results.
Thank you.

[carlo.stenali]

with the vapor-solid equilibria flash available in Prode Properties I have tested methane-Co2 and some other mixtures with Soave Redlich Kwong and SSM package available in Prode Properties,
errors for freezing point temperatures are in a range from 1 to 5 C compared with experimental data,
I have not verified Peng Robinson but I presume it gives equivalent accuracy (I may be wrong)