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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 ingredients of the pink Zote bar are sodium tallowate (animal fat), sodium cocoate, Citronella oil (fragrance), glycerin and optical brightener.. Other laundry products include specialized bars of soap, indicated by the color, laundry flakes, and liquid detergent.
Most detergents use a combination of various surfactants to balance their performance. Until the 1950s, soap was the predominant surfactant in laundry detergents. By the end of the 1950s so-called "synthetic detergents" (syndets) like branched alkylbenzene sulfonates had largely replaced soap in developed countries.
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 ...
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.
A bar of carbolic soap A puck of shaving soap in a ceramic bowl In chemistry , a soap is a salt of a fatty acid . [ 2 ] Household uses for soaps include washing , bathing , and other types of housekeeping , where soaps act as surfactants , emulsifying oils to enable them to be carried away by water.
Optical brightening agents 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) by fluorescence. After scouring and bleaching, optical brightening agents are applied to make the textile material appear a ...