solutizer

\\-zə(r)\ noun (-s)

Etymology: solutize to treat with organic salts or solvents to impart certain solvent properties (from solute + -ize) + -er

: an agent (as an organic salt or an organic solvent) for promoting solubility; especially : such an agent (as potassium isobutyrate) for use with a caustic solution in removing mercaptans from gasoline