Industrial chemical name: sodium bisulfate, formaldehyde or the combination of formaldehyde and sodium bisulfate, commonly known as "hanging white block", also known as "carved white block", mainly composed of sodium bisulfate, formaldehyde, white block or crystalline powder, is an industrial bleaching agent. It has strong reducibility and is used as bleaching agent in industry.

In food processing, formaldehyde produced by decomposition of formaldehyde sodium bisulfate can solidify protein and inactivate protein. Eating food mixed with sodium formaldehyde sulfoxylate will cause damage to human skin, mucosa, kidney, liver and central nervous system, and even lead to cancer and deformity.

Eating sodium formaldehyde sulfoxylate can cause human allergies, intestinal irritation, food poisoning and other diseases, which will seriously affect vision, cause cancer and even endanger life. Because sodium formaldehyde sulfoxylate has obvious bleaching and antiseptic effects on food, and its price is low, it has long been used in food processing by unscrupulous merchants.

The state prohibits the addition of sodium bicarbonate in food processing, and illegal traders mainly use it for whitening, color enhancement, preservation, flavor enhancement and preservation in rice flour products such as noodles, rice noodles, pasta, rice noodles, bean curd skin, yuba, brown sugar, crystal sugar, lotus root starch, flour, bamboo shoots, tremella, beef noodles, blood tofu, seafood, etc., so as to make the appearance of food bright.

2. Formaldehyde for industrial use (forbidden)

Commonly known as formalin, it is an industrial bleaching agent. Formaldehyde is a colorless gas, which is easily soluble in water and has a strong pungent smell. Usually, 35% to 40% formaldehyde solution is called "formalin", which has antiseptic effect and is used to soak pathological sections and human and animal specimens.

The state prohibits the addition and use of formaldehyde in food processing, and illegal traders mainly use it in dried aquatic products such as sea cucumber and squid, aquatic products, aquatic products, vermicelli, yuba, noodles, beer, marinated food, blood products and other foods for strong sterilization, antisepsis, whitening, bleaching, curing, setting and improving appearance and texture.

3. Borax (disabled)

Industrial chemical name: sodium borate, which is toxic, is a toxic chemical raw material. The state prohibits the addition and use of borax in food processing, and illegal traders use it to strengthen tendons, strengthen tendons, increase elasticity and crispness, and improve the taste of meat products such as noodles, dumpling wrappers, zongzi, cakes, bean jelly, cold noodles, meatballs and food such as yuba.

Extended data:

According to a survey, 80% people think that food safety problems are caused by food additives, which is famous in China. Food additive is a great invention of mankind. People have a long history of using food additives. Without food additives, there would be no development of food industry today.

Without food additives, the "delicious taste on the tip of the tongue" will be eclipsed. Sun takes this as an example: during the Dawenkou culture period 6000 years ago, invertase in Saccharomyces cerevisiae was a food additive and an edible enzyme preparation; More than 2,000 years ago, Liu An, the king of Huainan in the Western Han Dynasty, invented brine tofu. Magnesium chloride is the main component of brine, and it is a food coagulant and food additive.

Ham production technology, which began in Tang Dynasty and flourished in Song Dynasty, used nitrite as preservative and color fixative. If nitrite is not used, ham will be propagated by Botox, which will do great harm to human body after eating.

In the Southern Song Dynasty, fried dough sticks were invented by people in Lin 'an, Shaoxing, and alum was used as a food puffing agent. Monascus, as a food colorant, has been used in China for more than 1000 years, and modern research has found that it has health care function.

People's Network-blacklist of banned food additives

People's Health Network-Resolving the rumors and misunderstandings of food additives head on.