Melamine powder is a vital nitrogen heterocyclic organic chemical raw material. Stable under average temperature and pressure, soluble in hot water, slightly soluble in cold water, very slightly soluble in hot ethanol, insoluble in ether, benzene and carbon tetrachloride, soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerol, pyridine, etc. Low toxicity. It is generally stable, but it may decompose and release cyanide at high temperatures. It is weakly alkaline (PKB = 8) and can form melamine salt with hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid, etc.
The primary raw material for manufacturing melamine-formaldehyde resin is used as an organic element analysis reagent, also used in the synthesis of organic resin, as a tanning agent and filler for leather processing. Melamine resin can be prepared by condensation polymerization with formaldehyde. It can be used in the plastic and coating industry and can also be used as anti-wrinkle However because it is harmful to the human body, it can not be used in food processing or food additives.
In terms of function and use, melamine has a wide range of services, and as raw material, it has been widely produced and sold because of its low price and high quality. With urea as the raw material, This has also led to the severe expansion of melamine production capacity in China, resulting in fierce competition among Chinese melamine enterprises and rising product prices in the industry. It is a 582 melamine resin prepared with formaldehyde and butanol as raw materials. It has an excellent effect as a leveling agent for solvent-based polyurethane coatings. It can be used in the plastic and coating industry. It can also be used as an anti folding and anti-shrinkage treatment agent for textile fabrics.
It should be noted that after melamine enters the human body, a substitution reaction (hydrolysis) occurs to generate cyanuric acid. Cyanuric acid and melamine form an extensive network structure and cause stones. Only when melamine and cyanuric acid are contained in food, simultaneously, do they pose a threat to the health of infants. Although melamine and cyanuric acid will cause kidney stones under the joint action of melamine and cyanuric acid, melamine will be partially hydrolyzed into cyanuric acid in the strongly acidic environment of the stomach. Therefore, as long as melamine powder is contained, it is equivalent to cyanuric acid. Its harm still comes from cyanuric acid, which is harmful to the human body, so it can not be used in food processing or food additives.