Optical brightener

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Optical brightener


Optical brightener   Optical brighteners are fluorescent whitening agents, designed to brighten colors or mask yellowing in plastics, lacquers, paints, inks, photo-processing solutions and fibers. They function by absorbing invisible ultraviolet radiation and re-emitting it as visible light in the blue range of the spectrum. Optical brighteners are particularly effective in masking the yellowish cast sometimes observed i

Optical brightener