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Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...
4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H 2 NC 6 H 3 SO 3 H) 2 C 2 H 2.It is a white, water-soluble solid. Structurally, it is a derivative of trans-stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings.
Cyanuric chloride is also used as a precursor to dyes and crosslinking agents. The largest class of these dyes are the sulfonated triazine-stilbene optical brighteners (OBA) or fluorescent whitening agents (FWA) commonly found in detergent formulas and white paper. [2] Many reactive dyes also incorporate a triazine ring. They are also ...
Castilla recommends this dark spot corrector for its trio of brightening ingredients: kojic acid, niacinamide, and tranexamic acid. The brand recommends applying it twice a day by using three to ...
Optical Brightening Agent, a type of dye used in fabric and paper; Output-based aid, a type of aid to support the delivery of public services in developing countries; Out-of-band agreement, in communications; Oxygen Breathing Apparatus, an oxygen supply system used by the US Navy for firefighting
After scouring and bleaching, optical brightening agents (OBA), are applied to make the textile material appear more white. These OBAs are available in different tints such as blue, violet and red. These OBAs are available in different tints such as blue, violet and red.
Sizing improves the surface strength, printability, and water resistance of the paper or material to which it is applied. In the sizing solution, optical brightening agents (OBA) may also be added to improve the opacity and whiteness of the paper or material surface.
Some materials can be made to look "whiter than white", this is achieved using optical brightener agents (OBA). These are chemical compounds that absorb light in the ultraviolet and violet region (usually 340–370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420–470 nm). OBAs are often used in paper ...