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1,3,5-TRIAZINE-2,4,6-TRIAMINE MONOPHOSPHATE (MELAMINE PHOSPHATE)

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is an efficient nitrogen-phosphorus intumescent flame retardant. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) has the advantages of high thermal stability, low water solubility, excellent flame retardant performance, etc., and is mainly used for flame retardant in glass fiber reinforced nylon, polyurethane and fiber fabrics.
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is an efficient nitrogen-phosphorus intumescent flame retardant.

CAS:    218768-84-4
MF:    C3H6N6.(H3PO4)n
EINECS:    239-590-1

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is a halogen-free Flame Retardant, and have very high thermal stability. 
The decomposition temperature ≥360℃.
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can be widely applied in thermoplastic and thermosetting plastics, and rubber, fiber, and so on.
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate), commonly known as "melamine", "protein essence", "melamine (Chinese pinyin: mà'àn)", it is a triazine nitrogen-containing heterocyclic organic compound, often used as a chemical raw material. 

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is a white monoclinic crystal, almost tasteless, slightly soluble in water (3.1g/L normal temperature), soluble in formaldehyde, acetic acid, hot ethylene glycol, glycerin, pyridine, etc., insoluble in acetone, ethers, harmful to the body, and cannot be used for food processing or food additives. 
However, some unscrupulous businesses mix melamine into milk products in order to increase the nitrogen level when testing protein content.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) to urea as raw material, the production of 1 tons of melamine about 3 tons of urea. 
China is the world's largest producer of urea, urea production and low prices, even in the national implementation of high tariffs to curb urea exports, the annual urea exports still reach (300~700) the rich urea resources make China's melamine production has a unique advantage. 
China's 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) production capacity expansion is serious, resulting in Chinese melamine enterprises competitive, industry product prices rose Fatigue.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is a halogen-free flame retardant, and have very high thermal stability. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can be widely applied in thermoplastic and thermosetting plastics, and rubber, fiber, and so on.
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is used specially for glass fiber reinforced polyamide 66.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) Physico-chemical Properties
Molecular Formula: C3H6N6
Molar Mass: 126.12
Density: 1.573
Melting Point: >300 °C (lit.)
Boling Point: 224.22°C (rough estimate)
Flash Point: >110°C
Water Solubility: 3 g/L (20 ºC)
Solubility: A small amount is soluble in water, ethylene glycol, glycerol and pyridine. 
Slightly soluble in ethanol, insoluble in ether, benzene, carbon tetrachloride.
Vapor Presure: 66.65 hPa (315 °C)
Appearance: White monoclinic crystal
Color: White
Merck: 14,5811
BRN: 124341
pKa: 5(at 25℃)
PH: 7-8 (32g/l, H2O, 20℃)
Storage Condition: no restrictions.
Stability: Stable. Incompatible with strong acids, strong oxidizing agents. Nonflammable.
Sensitive: Easily absorbing moisture
Refractive Index: 1.872
MDL: MFCD00006055

Applications
Reagent for the colorimetric determination of iron 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is used in the spectrophotometric determination of iron. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) acts as a tridendate ligand and form coordination complexes with lanthanides and rhodium.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) 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. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can be used as a metal coating with bright color, durability and good hardness. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can also be used for strong, heat-resistant decorative sheet, moisture-proof paper and gray leather tanning agent, synthetic fire-resistant layer board adhesive, waterproof agent fixing agent or hardening agent. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) was prepared from melamine, formaldehyde and butanol.
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) used as a leveling agent for solvent-based polyurethane coatings, the effect is particularly good.

The main raw material for the manufacture of 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is used as an organic elemental analysis reagent, and also used in the synthesis of organic and resin as tanning agent and filler in leather processing. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) 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. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can be used as a metal coating with bright color, durability and good hardness.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) made by condensation polymerization with formaldehyde is widely used in the manufacture and processing of wooden building formwork. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) can be used for the waterproof of the template surface and the adhesion of the wood core board, and increase the number of repeated use of the template.

1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is an important nitrogen heterocyclic organic chemical intermediate using urea as raw material. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is more and more favored by people due to its environmental protection performance and wide range of uses. 
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) is widely used in wood processing, plastics, coatings, water reducing agents, papermaking, adhesives, textiles, leather, electrical appliances, medicine, flame retardants and other industries.  
At present, China has become the world's largest 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) production base and export country.

Preparation Method
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) production unit adopts pressurized gas phase quenching method. 
Liquid urine in urea unit area is used as raw material to generate 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) and by-product tail gas (ammonia, carbon dioxide) through catalytic reaction. 
Excess ammonia and carbon dioxide are sent to urea combined production unit to co-produce urea, and the generated urea continues to be sent to 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) unit to realize recycling production of raw materials. 

In the post-crystallization section of 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate), after the process gas from the crystallizer is separated by the finished cyclone separator, all the process gas at 210 ℃ enters the top of the liquid urine washing tower, and comes into contact with the sprayed liquid urine downstream. 
After heat exchange by the liquid urine cooler to 133~138 ℃, 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) enters the gas collecting box through five columnar cyclone separators to perform gas-liquid separation to remove the melamine and low-temperature by-products entrained therein, the gas is separated by the carrier gas cyclone separator and then enters the carrier gas compressor. 
Part of the gas is used as the circulating carrier gas, and the other part of the gas enters the air-conditioning fan and is sent to the crystallizer. 
The excess melamine tail gas is sent to the urea absorption system through the tail gas compressor Recycling.

Toxicity
1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) was considered to be slightly toxic, with oral LD50 in rats greater than 3 g/kg body weight. 
Animal long-term intake of 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) will cause reproductive, urinary system damage, bladder, kidney stones, and can further induce bladder cancer. 
The general adult body will discharge most of the 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate), but if used with cyanuric acid, it will form insoluble melamine cyanurate, causing serious kidney stones.
The International Chemical Safety Manual, Vol. 3, and the International Chemical Safety Card, organized by the International Programme for chemical safety and the European Commission, 1994, also describe only: long-term or repeated large intake of 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) may affect the kidney and bladder, resulting in stones. 

The mechanism of 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) forming kidney stones is not very clear. 
Some studies suggest that melamine is often mixed with cyanuric acid with similar structure, and 1,3,5-triazine-2,4,6-triamine monophosphate (melamine phosphate) will combine with cyanuric acid to form crystal deposition after ingestion of human body into renal cells, this results in kidney stones and blockage of renal tubules, and may lead to kidney failure.

Synonyms
Melamine phosphate
20208-95-1
1,3,5-Triazine-2,4,6-triamine, phosphate
41583-09-9
1,3,5-triazine-2,4,6-triamine phosphate
Triazinetriaminephosphate
melamine monophosphate
INTUMESCENTCOMPOUNDKE8000
phosphoric acid;1,3,5-triazine-2,4,6-triamine
DOS5Q2BU94
1,3,5-Triazine-2,4,6-triamine, phosphate (1:1)
1,3,5-Triazine-2,4,6-triamine monophosphate
1,3,5-Triazine-2,4,6-triamine, phosphate (1:?)
218768-84-4
Melapur M 200
EINECS 255-449-7
hate
Melamine Polyphosp
EINECS 243-601-5
EINECS 260-493-5
UNII-DOS5Q2BU94
EC 255-449-7
SCHEMBL73239
DTXSID80872787
MELAMINE, PHOSPHATE (1:1)
MFCD00060248
AKOS028108538
AS-15268
CS-0449429
FT-0628188
FT-0742330
F71215
Di(1,3,5-triazine-2,4,6-triamine) phosphate
1,3,5-Triazine-2,4,6-triamine, phosphate (2:1)

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