Plastone GS OB

It acts as an optical brightening agent. It is a greenish white powder. It absorbs Ultra-violet (UV) light in the range 360 - 380 nanometers (nm) and re-emit this light in the visible spectrum in the range 420 - 460 nm. Used in rubbers, polyvinyl chloride, polyolefins, ethylene vinyl acetate copolymers, polystyrene, polyester and polyurethane. The recommended dosage is for transparent polymers: 5 - 20 ppm (0.0005 - 0.002 %), for colored formulations: 20 - 100 ppm (0.002 - 0.01 %), for white formulations: 100 - 1000 ppm (0.01 - 0.1 %) and for fiber applications: 150 - 200 ppm (0.015 - 0.02 %).