Propylene carbonate reexamined: Mode-coupling beta scaling without factorization?

The dynamic susceptibility of propylene carbonate in the moderately viscous regime above T-c is reinvestigated by incoherent neutron and depolarized l ight scattering, and compared to dielectric loss and solvation response. De pending on the strength of cr relaxation, a more or less extended beta scal ing regime is found. Mode-coupling fits consistently yield lambda = 0.72 an d T-c = 182 K, although different positions of the susceptibility minimum i ndicate that not all observables have reached the universal asymptotics.