Equilibrium chemical composition of impact-produced hot cloud during isentropic expansion. The initial temperature T0 is 4000 K, the initial pressure P0 is 5, 20, and 80 bar. Calculations are performed using the EQL program. Abundances of considered species are presented in molar fractions.The elemental composition of impact-produced cloud is taken as a mixture of CI chondrite, mare basalts, and ferroan anorthosite with a ratio of 1:25:25 by mass as in Berezhnoy (2013).

Considered species include ions, neutral gas-phase species, and condensates. Ions are written as ...(+) (for example, Al(+)). Condensates (solids and liquids) are written as ...(c) or ...(c;...). Examples of condensates are Al2O3(c) and Al2O3(c; gamma). For species marked in theirs names as (cr, l) in Gurvich et al. (1989) (for example, Al2O3(cr, l)) it is possible to determine a state of matter (liquid or solid). The content of studied species is 0 if the relative molar fraction is less than 1e-21. 

The elemental composition of impact-produced cloud is taken as a mixture of CI chondrite, mare basalts, and ferroan anorthosite with a ratio of 1:25:25 by mass as in Berezhnoy (2013).  

Calculations of the equilibrium chemical composition of impact-produced clouds were performed starting from an initial temperature of 4000 K at different initial pressures of 5, 20, and 80 bar, corresponding to entropies equal to 7.2, 5.56, and 4.25 kJ / (kg×K), respectively. 

Berezhnoy, A.A., 2013. Chemistry of impact events on the Moon. Icarus 226, 205-211.

Gurvich L.V., Veitz I.V. et al. Thermodynamic properties of individual substances. Fourth edition in 5 volumes. Hemisphere Pub Co. New York-London, 1989.