pentanoxymethyl noun1 •An alkoxymethyl radical in which R is a pentyl groupSurfactants differ in the length of alkoxymethyl side chains, ranging from pentanoxymethyl to hexadecyloxymethyl, as indicated by their designations (C5, C6, C7, C8, C9, C11, C12, C14 and C16). — 2015
