No, but you can convert your 'chemical potential' to 'fugacity'.

Then, to use your own equation of state, simply input your computed 'fugacity coefficient'.

For example:

ExternalPressure 1e5

FugacityCoefficient 1.0

means the pressure is fugacity (because the fugacity coefficient is 1.0 and then pressure is equal to fugacity) and at 1 bar.

With your equation of state you can compute the fugacity coefficient.