Earth Science — Phase: salt–water (freezing)
Why salt lowers the freezing point of water (cryoscopy).
Make it your own.
title "Salt-water (NaCl-H2O)"
type binary
basis weight
component A "H2O" melting 0
component B "NaCl" melting 801
// The cryohydric point: 23.3 wt% NaCl freezing at -21.1 C, which is
// the reason rock salt stops working on a cold enough road.
eutectic 0.233 -21.1
region "Brine (liquid)" at (0.5, 0.90) color teal
region "Ice + brine" at (0.10, 0.31) color blue
region "Salt + brine" at (0.62, 0.55) color amber
region "Ice + salt (eutectic)" at (0.35, 0.14) color purple