Optical Brightening Agent OB-1 CAS 1533-45-5

Optical Brightening OB-1 is used to offset the yellowness of a polymer and to yield a whiter appearance. Optical brighteners create brilliance by a fluorescence process involving absorption of invisible UV light and emission of visible blue light. Optical Brightening OB-1 is especially useful in polyester and nylon fibers, as well as in high temperature engineering plastics.