c$_{1}$ c 2 0 0 . 02 0 . 04 0 . 06 0 . 08 0 . 1 0 0 . 01 0 . 02 0 . 03 0 . 04 0 . 05 0 . 06 0 . 07 I N$_{2}$ I+N$_{2}$ FMT (a) c$_{1}$ c 2 0 0 . 02 0 . 04 0 . 06 0 . 08 0 . 1 0 0 . 01 0 . 02 0 . 03 0 . 04 0 . 05 0 . 06 0 . 07 I+N$_{2}$ I N$_{2}$ Onsager (b) x p ∗ 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 05 0 . 1 0 . 15 0 . 2 0 . 25 0 . 3 I N$_{2}$ FMT I+N$_{2}$ (c) p ∗ 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 05 0 . 1 0 . 15 0 . 2 0 . 25 0 . 3 I N$_{2}$ Onsager I+N$_{2}$ (d) FIG. 6: Phase diagrams for λ = 4. The notation is the same as in Fig. 4. We have focused on the lower part of the phase diagram as this is where the most interesting phase behaviour occurs. The N - N phase separation continues to high densities beyond the scale of these plots, with a huge immiscibility gap. 36