Optical Brightener

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Fluorescent brightener, a fluorescent dye, or white dye, is also a complex organic compound. The first theoretical elaboration of the fluorescence phenomenon was in 1852. The rapid development of fluorescent brighteners led some to rank this, along with the introduction of reactive dyes and organic pigments DPP, as the three significant achievements of the dye industry in the late 20th century.

Fluorescent brighteners can excite incident light to produce fluorescence so that the dyed material obtains a glittering effect similar to that of fluorite. As a result, the material seen by the naked eye becomes very white. We can divide its chemical structure into five categories: stilbene type, coumarin-type, pyrazoline type, benzoxazole type, and Phthalimide type.

Today, many industries use fluorescent whitening agents, such as paper, plastics, leather, detergents, etc. There are also many high-tech fields, such as fluorescence detection, dye lasers, anti-counterfeit printing, etc. Even high-sensitivity film for high-altitude photography to improve the sensitivity of photographic latex will also use fluorescent brighteners.


Is bleach an optical brightener?

Bleach is not a fluorescent whitening agent.

The primary function of bleach is to bleach the item, that is, to remove or lighten the color of the item. It is a substance that destroys and inhibits the coloring factor of food, making it recede or making it free from browning. Some other chemicals will be through the oxidation reaction to achieve the role of bleaching items.

The primary function of fluorescent whitening agent is to turn the invisible ultraviolet radiation absorbed by the goods into violet-blue fluorescent radiation, and the original yellow radiation as a complementary color to become white light, to improve the whiteness of the product in daylight.


What is optical brightener in textile?

Fluorescent brighteners are chemicals added to textiles. This fluorescence process can deceive the human eye and create the illusion that fabrics are whiter than they are. Therefore, many laundry detergents also contain fluorescent brighteners to enhance and maintain the appearance of whiter-than-white textiles.

Fluorescent whitening agents can absorb ultraviolet light at about 340-380nm and emit blue light at a wavelength of about 400-450nm.


How do you use an optical brightener?

It can effectively compensate for the yellowing of textiles caused by the lack of blue light and visually significantly improve the whiteness and the brightness of fabrics.

The fluorescent whitening agent is a chemical that absorbs ultraviolet light and re-emits it in the form of blue light, making your clothes look whiter and brighter without causing damage to your clothes. Still, a fluorescent whitening agent cannot remove any dirt from your clothes.

Even if you wear clothes with fluorescent brighteners, you don't have to worry because your skin does not absorb fluorescent brighteners. Even if a small amount of fluorescent brightener leaving on your skin, it will not react with your body, and you only need to wash it off with water.

Many industries can use the fluorescent whitening agent. As people now have high requirements for the appearance of products, fluorescent whitening agents have become very common. For example, the plastic industry, the paint and ink industry, the printing and dyeing industry, the washing industry, and the paper industry use fluorescent whitening agents.

We need to pay attention to fluorescent whitening agent model choice when using a fluorescent whitening agent. Different models of fluorescent whitening agent and their performance characteristics are not alike. We have to choose a dedicated model according to the purpose of use. We should also pay attention to the amount of fluorescent whitening agent used; too little whitening effect is not ideal, and too much will cause an increase in costs.


What is optical brightener made of?

The use of fluorescent whitening agent methods is dry whitening, wet whitening, masterbatch method whitening, and grinding. The fluorescent whitening agent is a color conditioning agent, with the bright white and colorful role, widely used in paper, textiles, detergents, and many other fields. The fluorescent whitening agent has about 15 basic structure types, nearly 400 kinds of structure.

The primary raw materials of the fluorescent whitening agent are urea, DSD acid, soda ash, aniline, liquid alkali, sulfuric acid, hydrochloric acid, caustic soda, baking soda, triethyl ester, toluene, activated carbon, etc.


What detergent has no optical brightener?

A fluorescent whitening agent is a chemical substance; using detergent with an added fluorescent whitening agent can make our clothes brighter and whiter, but many people believe fluorescent whitening agents are harmful to the human body.

Some detergents do not contain fluorescent brighteners: Tide Purclean, Seventh Generation Free & Clear Natural Laundry Detergent, Allens Naturally Powder, and Active Wear Detergent (Optim).

Not all detergents contain fluorescent brighteners. If you wish to purchase a detergent that does not contain fluorescent brighteners, please check the label carefully before purchasing.

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