Here's what rhymes with solubility.

Consider these alternatives

bioavailability / ability reactivity / activity permeability / stability lipid / provided conductivity / activity solute / group crystallization / relation solutes / groups reflectivity / activity vapour / for ph / made salts / towards ions / science hygroscopic / logic dielectric / electric selectivity / activity hydroxide / dioxide oxidation / operation impurities / securities polymerization / information