  We study a model chiral fluid in two dimensions composed of Brownian disks
interacting via a Lennard-Jones potential and a non-conservative transverse
force, mimicking colloids spinning at a rate $\omega$. The system exhibits a
phase separation between a chiral liquid and a dilute gas phase that can be
characterized using a thermodynamic framework. We compute the equations of
state and show that the surface tension controls interface corrections to the
coexisting pressure predicted from the equal-area construction. Transverse
forces increase surface tension and generate edge currents at the liquid-gas
interface. The analysis of these currents shows that the rotational viscosity
introduced in chiral hydrodynamics is consistent with microscopic bulk
mechanical measurements. Chirality can also break the solid phase, giving rise
to a dense fluid made of rotating hexatic patches. Our work paves the way for
the development of the statistical mechanics of chiral particles assemblies.
