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 used as a chemical raw material. 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, it is harmful to health and cannot be used in food processing or food additives.
It's not dangerous. Dangerous goods generally include flammable, explosive and highly toxic substances. It is a chemical raw material.
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Is waterborne polyurethane emulsion a dangerous chemical? Not a dangerous product.
Refer to this: ask.koubei/question/140773004530.
Is chemical salt dangerous? Not dangerous. Chemical salts are mainly sulfates and nitrates, which are non-flammable, non-explosive and non-toxic.
Is melamine commonly known as 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 the chemical name of urea,
However, urea can be used as raw material to produce melamine.
In industry, melamine is made by the reaction of dicyandiamide with ammonia at high temperature, or directly with urea at high temperature and high pressure. The latter is widely used because of its low cost. Melamine formaldehyde resin can be prepared by condensation of melamine and formaldehyde. In addition, melamine is also used as an intermediate in the synthesis of drugs.
Is melamine foam a dangerous chemical? breakdown
It is found in the Catalogue of Hazardous Chemicals that "melamine resin" is a liquid with high flash point. There is no melamine foam in the catalogue.
Isn't it dangerous to use the word "dangerous goods" to represent the chemical industry? In general, dangerous chemicals are not sold in bags. If the chemicals are solid in bags, there are no words of dangerous chemicals on the package, and most of them are not dangerous goods.
Of course, it does not rule out that some dangerous goods are tampered with by unscrupulous merchants 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 so is NH3. Then you will smell a mixture of Sao (NH3) and rotten eggs (H2S) ... Very cool ... Watch out for H2S poisoning if you smell too much. .....
Is chemical raw material pyridine dangerous? Pyridine is a dangerous chemical.
Domestic dangerous goods code: 32 104.
Un number: 1282.
It belongs to the third category of dangerous chemicals. Specifically: the medium flash point liquid among the three flammable liquids.
Is dicyandiamide dangerous? 46 1-58-5 (CAS database reference)?
The national institute of standards and technology.
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 a raw material for producing melamine. It is also an intermediate of medicine and dyes. Used in medicine to prepare nitrate.
Guanidine acid, sulfonamide, etc. It can also be used to prepare thiourea, guanidine, nitrocellulose stabilizer and rubber.
Vulcanization accelerator, steel surface hardener, fixing agent, artificial leather filler and adhesive.
The main uses of dicyandiamide are:
1
As raw material of guanidine salt and melamine. With dicyandiamide
Reacting with acid, various guanidine salts can be made. Benzamide diamine obtained by the reaction of dicyandiamide and benzonitrile.
It is an 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 nitrogen loss and improve fertilizer utilization rate.
four
As a fine chemical intermediate. in the hospital
Pharmaceutically used to prepare guanidine nitrate, sulfanilamide, etc. It is also used to prepare thiourea and nitrocellulose.
Agent, rubber vulcanization accelerator, steel surface hardener, artificial leather filler, adhesive, etc. Through dicyandiamide
Amine reacts with formic acid to obtain pharmaceutical intermediates.
5-
Azocyanine.
Melamine melamine is insoluble in water, but urea can decompose melamine in high temperature environment, and liquid milk can be obtained in high temperature and antiviral environment! And recently, melamine was also detected in Mengniu's liquid milk! Melamine is not cheap and cannot be dissolved in water at room temperature. The possibility of adding melamine directly is too small! Think for yourself.