Is melamine toxic?

Question 1: Is melamine board toxic? What is melamine board? Melamine board is also called double decorative board, and some people call it one-time molding board. Its base material is also particleboard, which is formed by bonding the base material and the surface. There are two kinds of surface veneers, domestic and imported. Because of the fire-proof, wear-resistant and waterproof soaking treatment, the use effect is similar to that of composite wood floors. Melamine board, referred to as melamine board for short, is more like an eco-board in the industry, and its full name is melamine impregnated adhesive paper veneer artificial board. So is melamine board toxic? Let me introduce you! "Melamine" is one of the resin adhesives for making this kind of board. Paper with different colors or textures is soaked in resin, dried to a certain curing degree, then spread on the surface of particleboard, medium density fiberboard or hard fiberboard, and hot pressed to make decorative boards. The standard name is melamine impregnated paper veneer artificial board, and its melamine board is actually a part of its veneer composition. Melamine board is light, mildew-proof, fire-proof, heat-resistant, earthquake-resistant, easy to clean and renewable, which completely conforms to the established policy of energy saving and ecological protection, so people in the industry also call it eco-board. In addition to solid wood furniture, all kinds of high-grade panel furniture have melamine board. Adding melamine board to high-end wardrobe can effectively prevent formaldehyde and urea-formaldehyde resin from polluting the environment as preservatives. In addition, melamine board can also be used to replace wood and aluminum-plastic board to make mirror, high wear-resistance, antistatic, relief, metal and other decorative surfaces. Characteristics of melamine board: Compared with medium density board and high density board, melamine board has the same internal texture, symmetrical materials and basically the same expansion coefficient. Therefore, under the same climatic conditions, melamine board is less prone to deformation due to temperature and humidity changes. In addition, the surface of melamine board is soaked in melamine glue, which makes the corrosion resistance and wear resistance of melamine board more excellent. The article "Health of Melamine Domesticated in Furniture and Building Materials" points out that melamine board used in home decoration is tasteless and will not cause direct harm to human body at all. From the point of view of environmental protection, melamine board is light, mildew-proof, fire-proof, heat-resistant, earthquake-resistant, easy to clean and renewable, which completely conforms to the established policy of energy saving, consumption reduction and ecological protection, so people in the industry also call it eco-board. In addition to solid wood furniture, all kinds of high-grade panel furniture have melamine board participation.

Question 2: Is melamine furniture harmful to human body? Melamine furniture is harmless to human body! Melamine will not volatilize any toxic substances in the natural state.

At present, melamine is widely used as an additive in the production of plates and furniture. Melamine is not only widely used in the production of high-grade panel furniture, but also widely used in cabinets, wardrobes, wood floors and other industries.

At present, the mainstream panel furniture in the market is basically melamine veneer, which is based on particleboard and medium density fiberboard and decorated with melamine impregnated paper. The color, texture and design grade of furniture surface all depend on the effect of this paper.

"The advantages of melamine decorative board are not only smooth and beautiful, but also fire-proof, scratch-proof and not easy to deform. It can be processed according to different colors and styles and is suitable for making all kinds of middle and high-end furniture." Melamine impregnated paper is divided into two types: imported and domestic. The two prices are quite different, but melamine is used as an additive in the production process.

Melamine is a pure white monoclinic crystal, odorless, soluble in hot water, slightly soluble in cold water, and slightly soluble in hot ethanol, with low toxicity, generally stable, and will not be nontoxic after curing. Unless you eat it in your stomach, melamine is very safe as an additive in the production of plates and furniture. On the contrary, adding melamine in furniture production can reduce the consumption of formaldehyde and reduce the harm.

Whether furniture is environmentally friendly depends mainly on whether harmful substances such as formaldehyde and benzene in the substrate exceed the standard. According to the national standard, the formaldehyde emission should not be greater than 1.5 mg per cubic meter, while the E0 standard formulated in Europe should not be greater than 0.6 mg per cubic meter. Therefore, when consumers buy furniture, they should pay attention to whether such volatile harmful substances in the substrate meet the standards, and do not worry that melamine will cause harm to the human body.

Question 3: What harm does melamine do to human body? Why can't melamine be short for melamine, scientific name for melamine, alias for melamine, melamine and melamine? Melamine is an important nitrogen heterocyclic organic chemical raw material. This chemical is usually used to produce plastics, glue and flame retardants. Melamine contains nitrogen, which can increase the content of protein in feed products, and make the products appear higher in protein in routine inspection, thus improving the grade of feed. But melamine has no nutritional value. Melamine is a chemical that is forbidden to be used in pet food and animal feed. After animals eat it, it will lead to renal failure and death.

In fact, melamine has become a key word in the "pet food door" incident in 2007.

In March 2007, pets died in the United States because of eating food containing toxic substances, which showed a rapid spread trend, and incidents of pet food killing cats and dogs occurred continuously. According to incomplete statistics, in the United States and North America alone, tens of thousands of pets died suddenly because of eating toxic feed, and there are countless complaints. A survey by the US Food and Drug Administration showed that melamine was found in recycled pet food, urine crystals of dead animals and kidney cells, and it was confirmed that the raw materials of pet food were contaminated with melamine.

The recent tragic incident that milk powder was contaminated with melamine caused hundreds of children to get sick and one died, which made the call for compulsory detection of melamine in food more and more high. Ma Puni testing food testing experts said that melamine was not a routine testing item for foods such as milk powder before, but in view of the harm of this substance to human body, Ma Puni testing had carried out professional testing services for melamine before the "toxic pet food" incident in 2007, testing pet food, fish feed, baby food and its raw materials (including starch, rice protein, corn protein, gluten, etc.). ). PONY Pony test food testing experts suggest that food production enterprises should take the attitude of being responsible for product quality and send products to professional and authoritative testing institutions for testing related projects to ensure the health and safety of products and avoid the recurrence of the above tragic events.

Question 4: What is melamine? What harm does he do to human body? Melamine is a triazine nitrogen-containing heterocyclic organic compound and an important nitrogen-containing heterocyclic organic chemical raw material. Melamine has no nutritional value. It was found that no obvious poisoning phenomenon was observed after feeding large doses of melamine to rats, rabbits and dogs. Long-term intake of melamine in animals will cause damage to reproductive and urinary systems, bladder and kidney calculi, and further induce bladder cancer.

Question 5: What is melamine board? Is melamine board toxic? Melamine board is also called double decorative board, paint-free board and eco-board. Its substrate is also particleboard and medium density fiberboard, which are bonded by substrate and surface. There are two kinds of surface veneers, domestic and imported. Because of the fire-proof, wear-resistant and waterproof soaking treatment, the use effect is similar to that of composite wood floors.

Melamine is a formaldehyde-free solution, which is environmentally friendly, because the price of melamine solution is almost 10 times that of other adhesives, and many people mix formaldehyde glue into the solution, which is not environmentally friendly and harmful.

Question 6: Why is melamine harmful to people? What is his chemical equation? 1 pseudoprotein principle

Melamine is often used as a food additive by unscrupulous businessmen to improve the protein content index in food testing due to the defects in the detection methods of protein content in food and feed industries, so melamine is also called "protein essence".

Protein is mainly composed of amino acids, and its nitrogen content is generally below 30%, while the molecular formula of melamine contains about 66% nitrogen. The common protein determination method "Kjeldahl method" estimates the protein content by measuring the nitrogen content, so adding melamine will make the protein content of food higher. Only in this way can inferior food pass the inspection of food inspection agencies. It is estimated that the content of protein in plant protein powder and feed will increase by one percentage point, and the cost of using melamine is only 1/5 of that of real protein raw materials. Melamine, as a white crystalline powder, has no smell and taste, and it is not easy to be found after doping.

Milk powder incident: the content of protein in all brands of milk powder is 15-20% (and it is marked as 10-20% on the supermarket package at night), and the average nitrogen content in protein is 16%. If the protein content of qualified milk is 2.8%, the nitrogen content is 0.44%, and the protein content of qualified milk is 65,440. The nitrogen content is 2.88%, while the nitrogen content of melamine is 66.6%, which is 15 1 times that of milk and 23 times that of milk powder. Adding 0. 1 g melamine to every 100g milk can increase protein by 0.4%.

2 melamine 2,4,6-triamino-1, 3,5-triazine, 1, 3,5-triazine-2,4,6-triamine, 2,4,6-triaminourea, melamine, melamine, melamine amide.

C3N3(NH2)3，

Question 7: Is melamine toxic in case of fire? Melamine itself is non-toxic, and it is a kind of material similar to porcelain, which is very good for making bowls and spoons. But the cost is a little higher than that of plastic, such as a plastic bowl of 3 yuan, and the imitation porcelain bowl of 8 yuan. Melamine, because of its nitrogen element (amino group), is characterized by high nitrogen content (66%) and non-toxic, so it was added to milk powder by criminals and used for industrial and commercial testing of nitrogen content in milk powder (commonly used combustion method for nitrogen determination). The test method was changed, and the result was detected because it was insoluble in water. It is unreasonable to say that it will lead to lithiasis. Stones are in the kidney or gallbladder, which belongs to the internal environment of the body. Melamine can't be digested and discharged with stool. It may lead to appendicitis at most.

Question 8: Is melamine formaldehyde resin harmful to human body? Although melamine and formaldehyde are both toxic compounds, they are a safe, stable and non-toxic substance after condensation into melamine-formaldehyde resin, which is often used to make daily necessities, tableware and so on.