POLYOX™ WSR-303 is a nonionic, water-soluble poly(ethylene oxide) polymer with a molecular weight of 7,000,000. It will form a solution with a viscosity of 7,500–10,000 cPs when added to water at 1 wt%. Like other high molecular weight POLYOX™ water-soluble resins, it is an excellent nonionic flocculant for thickening mining and wastewater applications. It may also be used as a film-forming resin in water-soluble coating, ink, or adhesive applications.

POLYOX™ WSR-303 also works well as a binder for ceramics, where it greatly improves the green strength of ceramic parts. Due to its pseudoplastic rheology, the extrusion pressure of ceramics is dramatically decreased. POLYOX™ WSR-303 will also reduce the frictional drag of water by about 80% when used in very small volumes (5–200 ppm), making it an ideal additive for firefighting solutions and storm sewer drainage. This frictional drag also makes POLYOX™ WSR-303 useful in agricultural spray solutions, where the polymer helps to prevent spray drift to unintended plants or areas. POLYOX™ WSR-303 resin has very low toxicity and does not cause irritation or sensitivity.