Overall Introduction of Optical Brightener
Overall Introduction of Fluorescent Brightener What Is Fluorescent Brightener? Optical brightener sometimes called optical brightening agents (OBAs), fluorescent brightening agents (FBAs) or fluorescent whitening agents (FWA) are colorless to weakly colored organic compounds. When present on a substrate, absorb primarily invisible ultraviolet light in the 300-400 nanometer (nm) range and re-emit in the visible violet-to-blue fluorescent light to yield a brighter, fresher…