Can the product use the purple -light flashlight to check whether the product contains fluorescent agents?

gossip:

I can’t remember which brand is the first to play a “non -fluorescent agent” card in the sanitary napkin advertisement, but for the bright contrast between the two sanitary napkins that contain fluorescent agents and fluorescent agents under the light of purple light, let consumption consumption The people would rather spend high prices and work hard to bypass this pit. The exclusion of fluorescent agents also spread from a sanitary napkin to a series of products such as diapers, masks, laundry fluids, and washing towels. Many people even develop the habit of “check whether the product contains fluorescent agents with a purple flashlight” …

Truth interpretation:

01

The product value is good for sale

Fluorescent agents are their “foundation”

The fluorescent agent we mentioned should be called a fluorescent whitening agent, which is mainly used to improve the whiteness of the product in the sunlight. It has been widely used in textiles, papermaking, laundry powder, laundry fluids, soaps, rubber, plastic, pigments The production of products such as paint. A fluorescent whitening agent is a fluorescent dye (also known as white dye) and is a complex organic compound. Its working principle is to absorb the invisible ultraviolet radiation to generate blue or blue -purple fluorescent launch, eliminate yellow light of the white product substrate, and increase the reflectance of material to light, making the material that the naked eye sees whiter.

In fact, the purpose of adding fluorescent whitening agents is to make the product look white and brighter, leaving the impression of “clean and quality”. Although everyone has begun to change their concepts in recent years, and even buy some cotton products without bleaching and yellow color, the original purpose of the merchant to add fluorescent whitening agents to the product is to meet the needs of consumers.

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02

From more than 300 streamlines to 100 species

It is safe enough to stay until today

According to the “Dye Index” reference book published by the British Dyeing Family Association (SDC) and the American Textile Chemist and the Draze Home Association (AATCC), there are about 300 types of fluorescent whitening agents. The main chemistry The structure can be divided into five categories, including: di -styrene type, fragrant beanin type, pyrarine type, benzene oxidazole type, di metharine type, etc. After years of practice, there are currently less than 100 fluorescent whitening agents that are still being produced and used at home and abroad. These have been proven to be low toxic or basically non -toxic, so consumers can use it with confidence [1]. All kinds of foods, paper products, cosmetics and other products that add fluorescent white agents need to be tested by national standards or industry standards [2-5] to test the qualified parties to be sold outside.

03

Fluorescence reactions are not exclusive to fluorescent whitening agent

You can buy it with a product with a qualified certificate

As for netizens using ultraviolet light irradiation to detect whether the product contains fluorescent whitening agents, this method itself is not rigorous, because this is a concept that confuses fluorescent whitening agents and fluorescent substances. Not all fluorescent substances are fluorescent whitening agents, and many plant components also have fluorescence, such as anthocyanins and chlorophyll. These natural plant fluorescent components are not fluorescent whitening agents and are not toxic. Aside from the safety of fluorescence white agents, when I saw fluorescence, it was said that it was not reliable to add a fluorescent whitening agent.

In fact, it is not just a fluorescent whitening agent, but the content of additives in the national standard products is within the scope of safety. Therefore, as long as you choose a product or food when buying daily necessities or food, you don’t have to worry too much about the safety of additives.

用紫光手电筒可以检查商品是否含有荧光剂?

Reference materials:

1. Fluorescent white agent science popularization knowledge. Paper and paper. 2016,35 (09).

2. QB/T 2953-2008 Washing agent with fluorescent whitening agent

3. GB/T 30798-2014 Food detergent test method Fluorescent whitening agent

用紫光手电筒可以检查商品是否含有荧光剂?

4. GB 31604.47-2016 Food Safety National Standard Food Materials and Product Paper, Cardboard and Paper Products in Fluorescence White Proton

5. DB34/T 3302-2018 Cosmetics 5 types of benzene and villain fluorescent whitening agent content

This article is produced by the “Scientific Rumor Platform” (ID: science_facts). Please indicate the source for reprinting.

用紫光手电筒可以检查商品是否含有荧光剂?

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Tuwa Creative