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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 ...
The compound is a popular optical brightener for use in laundry detergents. It is produced by reduction of 4,4′-dinitro-2,2′-stilbenedisulfonic acid with iron powder. [ 1 ]
The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white. Optical brighteners are used in laundry detergents, high brightness paper, cosmetics, high-visibility clothing and more.
The detergent’s pouch is recyclable after use, according to the brand, and it comes in three sizes: 1.3 pounds, enough for about 50 loads; 2.64 pounds, enough for about 100 loads; or 8 pounds ...
Laundry detergent is a type of detergent (cleaning agent) used for cleaning dirty laundry ... These agents include optical brighteners, fabric softeners, ...
Reduction gives 4,4′-diamino-2,2′-stilbenedisulfonic acid, which is a common optical brightener. Structure of Direct Yellow 12, an azo dye produced from disodium 4,4′-dinitrostilbene-2,2′-disulfonate.
Make a detergent solution: Mix one-fourth (1/4) teaspoon of a liquid dishwashing detergent per one cup of lukewarm water. Do not use laundry detergents, as they may contain optical brighteners ...
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 ...