melamine


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melamine

An organic base and trimer of cyanamide that is 67% nitrogen by weight. It has been used by some Chinese manufacturers to inflate the apparent protein content of foods and feeds, so that cheap ingredients can be passed off as concentrated proteins. While melamine itself is not toxic at low levels, in those cases in which adulteration was discovered nephrotoxic cyanuric acid had also been added.

melamine

A chemical derivative of urea, which when combined with formaldehyde is used to produce hard plastic laminates such as those used in countertops. Its chemical formula is C3H6N6. It has been used in foods, fertilizers, and other consumer products (such as animal feed) to increase their nitrogen content. When chemically complexed with cyanuric acid, it is toxic.
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In the initial phase, up to 2000 tons of melamine nonwovens can be produced annually, in a width up to 2400 mm and a weights ranging from 20-600 gsm.
Benzaldehyde (25 mmol), malononitrile (25 mmol) and ethanol (2.5 mL) were mixed thoroughly, and then 0.25 mmol of melamine was added to a 50 mL round-bottomed flask.
"Melamine now has options for all seasons and occasions, which has opened the doors to market melamine to high-end retailers," said Grace Saari, director of marketing for Gibson Overseas.
These screws are designed to be self-drilling, but the particleboard in melamine has a tendency to crumble and blow out easily, so drilling pilot holes is worth the effort.
The North America melamine formaldehyde market has also been classified based on the different applications.
Direct competitive ELISA kit (AgraQuant(R) Romer, Singapore) was used for the determination of melamine residues.
In case of melamine formaldehyde resin the value of "a" is usually 0.6 and "K" is 0.076.
The team also cultured feces from young male rats and demonstrated that melamine was directly converted to cyanuric acid by fecal bacteria.
They found total melamine excretion over a 12-hour period was nearly eight times higher among those who ate from the melamine bowls.
One group ate from melamine bowls, the other from ceramic bowls.
Since melamine has high percentage of nitrogen in its structure, some producers add illegally melamine to the food of pets and to powder milk for infants so protein percentage increases in those materials.