Melamine (Melamine)

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Melamine

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Theoharn
Teoharn
2,4,6-Triamino-s-triazine
Melamine
acetoguanamine
pluragard
2,4,6-Triamino-1,3,5-triazine,Metformin impurity D,Ph Eur)
2,4,6-Triamino-1,3,5-triazine Monomer
MelaMine MonoMer
Cymel
hicophorpr
2,4,6-Triamino-1,3,5-triazine,sym-Triaminotriazine
cyanuramide
1,3,5-Triazine-2,4,6-triamine
Melamin
Aero
2,4,6-triamino-1,3,5-triazine

+Expand -Stow

108-78-1

C3H6N6

126.12

2933610000

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Nature Description

White monoclinic prism crystal. Melting point ℃, relative density 1.537(16, 4℃). Slightly soluble in water, hot ethanol, glycerol and pyridine, insoluble in ether, benzene and carbon tetrachloride. Heating sublimation, sharp heating will decompose.

1.573

354oC

3G/L(20oC)

Product Applications

First, it is the main raw material for manufacturing melamine formaldehyde resin II. Used as an organic element analysis reagent, and also used in the synthesis of organic and resin 3. Tanning agent and filler for leather processing. 4. Melamine resin can be prepared by condensation polymerization with formaldehyde, which can be used in plastic and coating industry, and can also be used as anti-folding and anti-shrinkage treatment agent for textile products. The modified resin can be used as metal coating with bright color, durability and good hardness. It can also be used for solid and heat-resistant decorative sheet, waterproof paper and gray leather tanning agent, synthetic fire-proof sheet adhesive, waterproof agent fixing agent or hardener, etc. 582 melamine resin made from melamine, formaldehyde and butyl alcohol. It is used as leveling agent of solvent-based polyurethane coating with excellent effect. 5. Used to prepare synthetic resin and plastic, etc.

Production method

I. It is obtained from the reaction of dicyandiamide with ammonia at 200℃ in methanol solvent. This method consumes 1180kg dicyandiamide (98) and 30kg liquid ammonia per ton of product. Compared with this method, urea method has low cost and is widely used at present. Urea takes ammonia as carrier, silica gel as catalyst, boils at 380-400 ℃, first decomposes to generate cyanic acid, and further condenses to generate melamine. After the generated tripolyamine gas is cooled and captured, the crude product is obtained, then dissolved, impurities are removed, and the finished product is crystallized. The production of melamine by urea method consumes about 3800kg of urea and 500kg of liquid ammonia per ton of product. 2. Urea uses ammonia as the carrier and silica gel as the catalyst, decomposes into cyanic acid at 380 ~ 400℃, and further condenses melamine.