  In a recent work [\textit{J. Mol. Liq}, 2020, \textbf{320}, 114420], using
molecular dynamics simulations and a core-softened potential approach, we have
shown that adding a simple solute as methanol can "kill" the density anomalous
behavior as the LLCP is suppressed by the spontaneous crystallization in a
hexagonal closed packing (HCP) crystal near the LLPT. Now, we extend this work
in order to realize how longer-chain alcohols will affect the complex behavior
of water-alcohol mixtures in the supercooled regime. Besides core-softened (CS)
methanol, ethanol and 1-propanol were added to a system of identical particles
that interact through the continuous shouldered well (CSW) potential. We
observed that the density anomaly gradually decreases its extension in phase
diagrams until disappearing with the growth of the non-polar chain and the
alcohol concentration, differently from the liquid-liquid phase transition (and
the LLCP), which remained present in all analyzed mixtures, in according to
\textit{Nature}, 2001, \textbf{409}, 692. For our model, the longer non-polar
chains and higher concentrations gradually impact the competition between the
scales in the CS potential, leading to a gradual disappearing of the anomalies
until the TMD total disappearance is observed when the first coordination shell
structure is also affected: the short-range ordering is favored, leading to
less competition between short- and long-range ordering and, consequently, to
the extinction of anomalies. Also, the non-polar chain size and concentration
have an effect on the solid phases, favoring the hexagonal closed packed (HCP)
solid and the amorphous solid phase over the body-centered cubic (BCC) crystal.
