Melamine (English: Melamine) (chemical formula: C3H6N6), commonly known as melamine and albumin, is named "1,3,5- triazine -2,4,6- triamine" by IUPAC, which is a triazine nitrogen-containing heterocyclic organic compound and is used in chemical industry. It is a white monoclinic crystal, almost tasteless, slightly soluble in water (3. 1g/L at room temperature), soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerol, pyridine, etc., insoluble in acetone and ethers, harmful to health, and can not be used for food processing or food additives.
It is not dangerous goods. Dangerous goods generally include flammable, explosive and highly toxic substances. It is a chemical raw material.
I hope it will help you, please adopt it if you are satisfied, dear! If you have any questions, please ask!
Is waterborne polyurethane emulsion a dangerous chemical product? Not a dangerous product.
Refer to this: ask.koubei./question/140707004530.
Is chemical salt dangerous? Not dangerous. Chemical salts are mainly sulfates and nitrates, which are non-flammable, non-explosive, non-toxic and not dangerous.
Is the common name of melamine urea? That's not true.
The chemical names of urea are: carboxamide, carboxamide and urea.
Chemical formula: CO(NH2)2
Diacylamide equivalent to carbonic acid. It occupies a considerable proportion in the final product of protein decomposition.
Melamine is not a chemical name for urea,
But urea can be used as raw material for melamine production.
In industry, melamine is made by the reaction of dicyandiamide with ammonia at high temperature or urea directly at high temperature and high pressure. The latter is widely used because of its low cost. Melamine formaldehyde resin can be made by condensation of melamine with formaldehyde. In addition, melamine is also used as an intermediate for synthetic drugs.
Is melamine foam a dangerous chemical? fault
After searching in the Catalogue of Hazardous Chemicals, "melamine resin" is a liquid with high flash point. There is no melamine foam in the catalogue.
Is it not dangerous to have the word "dangerous goods" on behalf of the chemical industry? Under normal circumstances, dangerous chemicals are not sold in bags. If the chemicals are solid in bags and there are no words of dangerous chemicals on the package, most of them are not dangerous goods.
Of course, it is not excluded that unscrupulous merchants tampered with it and bagged some dangerous goods without explanation.
Is ammonia sulfide dangerous ... That thing is double hydrolyzed to produce H2S and NH3. Although H2S is soluble in water, it is still easy to volatilize, and NH3 will also volatilize. Then you will smell a mixed smell of coquettish (NH3) and rotten egg (H2S) ... Very cool ... Be careful of H2S poisoning when you smell too much. .....
Is pyridine, a chemical raw material, dangerous? Pyridine belongs to dangerous chemicals.
The domestic number of dangerous goods is: 32 104.
UN: 1282.
It belongs to the third category of hazardous chemicals. Specifically: medium flash point liquid in three kinds of flammable liquids.
Is dicyandiamide a dangerous article 461-58-5 (CAS database reference)?
NIST
Chemical substance information
Dicyandiamide(46 1-58-5)
dicyandiamide
Uses and synthetic methods
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nature
quality
White prismatic crystalline powder.
Slightly soluble in water and ethanol, hardly soluble in ether and benzene.
It is the raw material of melamine and the intermediate of synthesizing medicine, pesticide and dye.
Used in organic synthesis and resin synthesis, and also used as vulcanization accelerator and hardener.
It is the raw material for producing melamine. It is also an intermediate of medicine and dyes. It is used to prepare nitrate in medicine.
Guanidine acid, sulfonamides, etc. It can also be used to prepare thiourea, guanidine, nitrocellulose stabilizer and rubber.
Vulcanization accelerator, steel surface hardener, dye fixing agent, artificial leather filler and adhesive, etc.
The main uses of dicyandiamide are:
1
As raw materials of guanidine salt and melamine. With dicyandiamide
Reacting with acid, various guanidine salts can be made. Benzmelamine diamine obtained by the reaction of dicyandiamide and phenylnitrile.
It is the intermediate of coating, laminated board and molding powder.
2
Used as dye fixing agent, dicyandiamide and methyl.
Dicyandiamide resin prepared by aldehyde reaction can be used as dye fixing agent.
three
Dicyandiamide fertilizer
Amine compound fertilizer can control the activity of nitrifying bacteria and adjust the transformation speed of nitrogen fertilizer in soil.
Reduce the loss of nitrogen and improve the efficiency of fertilizer use.
four
As a fine chemical intermediate. In the hospital
Pharmaceutically used to prepare guanidine nitrate, sulfonamides, etc. It is also used to prepare thiourea and cellulose nitrate.
Agent, rubber vulcanization accelerator, steel surface hardener, artificial leather filler, adhesive, etc. By dicyandiamide
Amine reacts with formic acid to obtain pharmaceutical intermediates.
5-
Azacytosine.
Melamine melamine does not dissolve in water, but urea can decompose melamine in high temperature environment, and liquid milk is obtained in high temperature and anti-virus environment! And recently, melamine was also detected in Mengniu's liquid milk! The price of melamine is not cheap, and it can't be dissolved in water at room temperature. The possibility of directly adding melamine is too small! Think for yourself.