... plastic whitening & brightening 3)Yellowish green powder 1.Typical Properties:Chemical name: 2,2-(1,2-Ethenediyldi-4, 1-phenylene)bisbenzoxazoleFormula ... PVC, ABS . EVA, polystyrene, polycarbonate, etc.2)Suitable for whitening chemical fibers, such as the polyester fibre, nylon fiber, polypropylene fiber ... shall adjust the formulations according to actual requirements. Optical Brightening Agent OB-1