Outflow mass (top) and mass loading factor η (bottom) for different gas phases of the outflow, including molecular (as traced by CO and OH), ionized (Hα) and atomic phases (Na I D), and most likely a combination of the three as traced by [C II]. For the sum of the phases (last column) we consider the molecular phase as traced by the CO line emission. We caution the reader that these measurements are affected by a series of assumptions on the physical conditions of the gas and geometry that can have a significant impact on the final value. The results for IRAS F08572+3915 are shown with a thick gray line. For comparison, outflow properties of other major merger, infrared luminous systems such as Mrk 231 (dashed line), Mrk 273 (solid line), and IRAS F10565+2448 are also shown (Rupke & Veilleux 2013a; Veilleux et al. 2013; Cicone et al. 2014; Janssen et al. 2016; González-Alfonso et al. 2017).