Bisomer S20W is an aqueous solution of a long chain methacrylate monoester based on an ethylene oxide backbone. It is water soluble and contains approximately 45 EO units within the chain. Bisomer S20W is an excellent material to impart water solubility or water dispersibility within non-ionic organic molecules. Due to its low Glass Transition Temperature (Tg), it is also an excellent flexibilising molecule.