Hansen Solubility Planes: Green Solvent Selector (2D)

This simulator plots real substances in Hansen Solubility Parameter space — dispersion δD, polarity δP and hydrogen-bonding δH — across three linked 2D projection planes, drawing the true solubility ellipse (not a naive sphere-in-every-plane) of a chosen target solute: cellulose acetate, an epoxy resin, or natural rubber. Eight common solvents, from water and ethanol to DMF and toluene, sit as points around that region; a solvent inside is "good" (RED < 1) and one outside is "poor" (RED > 1) — the exact geometric test process chemists use when hunting for a safer, greener replacement solvent. Blend two solvents by volume fraction, or drag a free custom probe to any point in Hansen space and read its live Ra and RED against the target solute on all three planes at once.