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Melamine Cyanurate (MCA) is non-flammable and has very stable chemical properties.
Melamine Cyanurate (MCA) is a white powder that is 99.5% pure.
Melamine Cyanurate (MCA) is primarily used as a flame retardant additive in paints and plastic.
CAS Number: 37640-57-6
Molecular Formula: C6H9N9O3
Molecular Weight: 255.2
EINECS Number:253-575-7
Synonyms:Melamine cyanurate, 37640-57-6, Melamine isocyanurate, DTXSID3068043, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, compound with 1,3,5-triazine-2,4,6-triamine (1:1), 253-575-7, RefChem:810867, DTXCID8039374, CHEBI:60153, Melaminecyanurate, 16133-31-6, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, compound with 1,3,5-triazine-2,4,6-triamine, 1,3,5-triazinane-2,4,6-trione;1,3,5-triazine-2,4,6-triamine, Melaminkyanurat, Melaminkyanurat [Czech], Mitec MX 601, EINECS 253-575-7, NSC 231587, C6H9N9O3, D 022, Melamine cyanaurate, EINECS 240-292-9, melamine cyanuric acid, melamine isocyanuric acid, AC1Q6GGS, 1,3,5-triazinane-2,4,6-trione- 1,3,5-triazine-2,4,6-triamine(1:1), Melamine Cyanurate (MCA), EC 253-575-7, SCHEMBL34655, Melamine Cyanuric Acid Adduct, SCHEMBL159174, MFCD00137334, MFCD00151572, NSC231587, AKOS015901107, AKOS024319632, NSC-231587, AS-12328, NS00074465, 640M576, Q3267336, I14-14870, 1,3,5-triazinane-2,4,6-trione compound with 1,3,5-triazine-2,4,6-triamine (1:1)., MELAMINE CYANURATE;1,3,5-triazine-2,4,6(1h,3h,5h)-trione,compd.with1,3,5-triazine-2,4,6-triam;1,3,5-triazine-2,4,6(1h,3h,5h)-trione,compd.with1,3,5-triazine-2,4,6-triamin;1,3,5-Triazine-2,4,6(1H,3H,5H)-trione,compd.with1,3,5-triazine-2,4,6-triamine(1:1);FR-MC;Melamine cyanurate (1:1);Melamine Cyanurate (MC);2,4,6-triamino-s-triazincompd.withs-triazine-triol
Melamine Cyanurate (MCA) is recommend for use in multiple products including: nylon-66, rubbers, synthetic resins (poly vinyl chloride, polystyrene, polyamide, polyoxymethymens) and acrylic acid emulsion etc.
Melamine Cyanurate (MCA) is a halogen-free nitrogen-based (triazine melamine-based) flame retardant, especially used for unfilled polyamide.
Melamine Cyanurate (MCA) is a white, odorless crystalline compound formed by the combination of melamine and cyanuric acid in equal molar amounts.
Its chemical formula is C₆H₉N₉O₃, and it has a high melting point of about 345°C.
Melamine Cyanurate (MCA) is known for its exceptional thermal stability and low flammability.
It is not a covalent compound but a hydrogen-bonded complex.
Melamine molecules interact with cyanuric acid molecules through strong hydrogen bonds between amine and carbonyl groups.
This results in a highly ordered crystalline lattice that gives MCA its heat resistance.
Melamine cyanurate is widely used as a flame retardant in plastics and polymers.
When exposed to high temperatures, it releases nitrogen gas and water vapor, which dilute oxygen and inhibit combustion.
It also forms a protective char layer on the polymer surface, slowing further burning.
It is most effective in polyamide materials, especially nylon-6 (PA6) and nylon-66 (PA66).
Adding Melamine Cyanurate (MCA) to these plastics allows them to meet UL 94 V-0 flammability standards.
This makes it ideal for applications in automotive components, electrical housings, and electronic devices.
Melamine Cyanurate (MCA) is also used in rubber, coatings, and thermoplastic elastomers.
It enhances flame resistance while maintaining the mechanical strength of the material.
This property allows manufacturers to produce lightweight, heat-safe products for industrial and consumer use.
In polymer chemistry, Melamine Cyanurate (MCA) acts as a non-halogen flame retardant.
Unlike brominated or chlorinated additives, it does not emit toxic gases during burning.
Thus, it is considered a more environmentally friendly alternative for fire safety.
Melamine Cyanurate (MCA) is stable under normal storage conditions but can decompose slowly at temperatures above 300°C.
During decomposition, it releases small amounts of nitrogen oxides, carbon dioxide, and ammonia.
These gases are non-flammable but may cause irritation in confined areas.
In scientific research, Melamine Cyanurate (MCA) is studied for its hydrogen-bond network structure.
It serves as a model compound in supramolecular and crystal engineering.
Its layered hydrogen-bonded arrangement is useful for understanding molecular self-assembly.
Melamine Cyanurate (MCA) has also been involved in toxicological studies due to its health risks.
When melamine and cyanuric acid are ingested together, they can combine in the kidneys to form MCA crystals.
These insoluble crystals block renal function, causing acute kidney damage.
This effect was notably seen in the 2007 pet food contamination and 2008 milk scandal incidents.
In both cases, the presence of melamine and cyanuric acid led to widespread kidney failure in animals and humans.
As a result, the compound is strictly regulated in food and consumer products.
In industrial use, Melamine Cyanurate (MCA) is considered non-toxic by skin contact or inhalation when properly handled.
However, fine dust can cause mild mechanical irritation to the eyes or respiratory tract.
Proper ventilation and protective equipment are recommended in manufacturing environments.
Environmentally, Melamine Cyanurate (MCA) is chemically stable and non-volatile, but poorly biodegradable.
It may persist in soil or sediment if released in large quantities.
Therefore, industrial waste should be thermally treated or incinerated at high temperatures.
Despite its environmental persistence, melamine cyanurate remains one of the most effective halogen-free flame retardants available.
Its combination of thermal stability, low smoke generation, and chemical safety makes it invaluable in modern materials engineering.
When handled responsibly, Melamine Cyanurate (MCA) contributes to fire safety innovations across multiple industries.
Melamine Cyanurate (MCA) is a high efficiency halogen-free environmental flame retardant containing nitrogen.
Melamine Cyanurate (MCA) is widely used in the plastics industry as a flame retardant.
After sublimation heat absorption and high temperature decomposition, Melamine Cyanurate (MCA) is decomposed to nitrogen, water, carbon dioxide and other gases which take away the reactant heat to achieve the purpose of flame retardant.
Because of high sublimation decomposition temperature and good thermal stability, Melamine Cyanurate (MCA) can be used for most of resin processing.
Melamine Cyanurate (MCA) is a halogen-free flame retardant that can be used in thermoplastic urethanes (TPUs) for electrical wire coatings.
Melamine Cyanurate (MCA) especially applies to nylon number 6 and number 66, which can achieve the anti-flaming effect with UL 94 V level easily; It’s worthwhile to point out that it has such advantages as very low application cost, super electrical capacity, mechanical performance and excellent pigmentation effect ect.
Melamine Cyanurate (MCA) is a salt comprised of Melamine and Cyanuric acid.
Melamine Cyanurate (MCA) is a halogen-free flame retardant that can be used in thermoplastic urethanes (TPUs) for electrical wire coatings.
Melting point: 350°C (dec.)
Density: 1.70
refractive index: 1.571
storage temp.: Refrigerator
solubility: Acidic DMSO (Sparingly), Aqueous Acid (Slightly)
form: Solid
color: White to Off-White
Odor: Slight odor
Water Solubility: insoluble
InChI: InChI=1S/C3H6N6.C3H3N3O3/c4-1-7-2(5)9-3(6)8-1;7-1-4-2(8)6-3(9)5-1/h(H6,4,5,6,7,8,9);(H3,4,5,6,7,8,9)
InChIKey: ZQKXQUJXLSSJCH-UHFFFAOYSA-N
SMILES: NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1
LogP: -2.28 at 25℃
Melamine Cyanurate (MCA) a crystalline complex formed from a 1:1 mixture of melamine and cyanuric (isocyanuric) acid, held together by an extensive two-dimensional network of hydrogen bonds between the two compounds.
Melamine Cyanurate (MCA) is a complex formed by two stable triazine-based compounds — melamine and cyanuric acid.
Both components have ring structures rich in nitrogen, which make the final product thermally stable and fire-resistant.
The two molecules arrange themselves alternately in layers, forming a crystalline hydrogen-bonded network.
This crystalline structure provides Melamine Cyanurate (MCA) with a high decomposition temperature and excellent chemical inertness.
It does not dissolve in water, ethanol, or most organic solvents.
Because of this insolubility, Melamine Cyanurate (MCA) maintains its integrity even under high heat or humidity.
When incorporated into polymers, Melamine Cyanurate (MCA) functions as a condensed-phase flame retardant.
During combustion, it absorbs heat and releases non-flammable gases like nitrogen and ammonia.
These gases displace oxygen around the burning surface, effectively inhibiting ignition and flame spread.
The released gases also help create a protective char layer on the polymer surface.
This char barrier acts as an insulating film, preventing heat transfer to deeper layers.
As a result, the polymer burns more slowly or even self-extinguishes after ignition.
In nylon composites, Melamine Cyanurate (MCA)’s performance is highly efficient at relatively low loadings.
Even a 10–20% weight addition can transform a normal nylon into a self-extinguishing material.
This allows engineers to produce high-performance components that meet stringent fire safety standards.
Common products containing Melamine Cyanurate (MCA) include automotive under-hood components, electronic connectors, and power tool housings.
It helps these parts resist fire exposure while maintaining mechanical strength and electrical insulation.
Such materials are crucial in industries where heat, electricity, and flammability risks coexist.
In electrical and electronic equipment, Melamine Cyanurate (MCA) is valued for its low smoke emission.
It prevents the release of halogenated toxic gases that are typical of older flame retardants.
This makes it an ideal additive for environmentally certified electronics and appliances.
Melamine Cyanurate (MCA) is also used in fiber-reinforced composites and thermoplastic polyesters.
It improves the flame retardancy of materials used in aerospace, railway, and construction applications.
These materials require a balance between lightweight performance and high heat resistance.
In rubber manufacturing, Melamine Cyanurate (MCA) enhances the fire resistance of rubber seals, belts, and cables.
It is compatible with silicone and nitrile rubber formulations.
When exposed to heat, it releases inert gases that help suppress combustion without degrading the rubber matrix.
Melamine Cyanurate (MCA)’s halogen-free nature aligns with modern environmental and regulatory standards.
It complies with European RoHS (Restriction of Hazardous Substances) and REACH directives.
This allows manufacturers to produce safer consumer goods and industrial materials.
Beyond its industrial role, Melamine Cyanurate (MCA) serves as a research material in materials science.
Scientists study its crystal formation to understand hydrogen bonding, self-assembly, and supramolecular chemistry.
The compound’s structure is often used to model molecular stacking and layered solid-state materials.
Melamine Cyanurate (MCA) is also known for its role in toxicology and forensic chemistry.
When melamine and cyanuric acid coexist in food or feed, they can crystallize into Melamine Cyanurate (MCA) inside kidneys.
These sharp, insoluble crystals cause blockages, inflammation, and acute renal failure.
This toxic mechanism was confirmed after the 2007 pet food contamination and 2008 infant formula crisis.
Animals and infants suffered kidney damage due to the adulteration of food with melamine-containing compounds.
Since then, global regulations strictly limit melamine and related derivatives in consumables.
In occupational environments, Melamine Cyanurate (MCA) is considered low in acute toxicity but still requires caution.
Inhalation of fine powders may cause temporary respiratory irritation or coughing.
Workers should use dust masks and maintain good ventilation during handling and mixing.
The compound does not pose a significant fire hazard on its own, as it is non-flammable and thermally stable.
However, when overheated above 350°C, it decomposes slowly, releasing ammonia, nitrogen oxides, and carbon dioxide.
These gases, while not flammable, may cause eye or throat irritation in confined areas.
From an environmental perspective, Melamine Cyanurate (MCA) is persistent but non-bioaccumulative.
It does not dissolve or migrate easily through soil or groundwater.
Nevertheless, improper disposal in large amounts can cause localized contamination.
To manage waste, Melamine Cyanurate (MCA) should be incinerated at high temperatures above 800°C.
This process breaks down the compound into harmless gases and inorganic residues.
Such controlled disposal prevents long-term environmental persistence.
Despite its toxic reputation in biological systems, Melamine Cyanurate (MCA)’s controlled industrial use is considered safe.
It provides significant benefits for fire prevention and material safety.
Its use in halogen-free flame retardant technology supports the shift toward cleaner, more sustainable chemistry.
In modern materials engineering, Melamine Cyanurate (MCA) continues to be a key additive in advanced polymer design.
It enables the development of lightweight, high-performance plastics that meet global safety standards.
Its combination of chemical stability, fire resistance, and environmental compliance ensures ongoing relevance across many industries.
Uses Of Melamine Cyanurate (MCA):
Environmental-friendly halogen-free inflaming lubricating agent.
Melamine Cyanurate (MCA) is a crystalline complex formed between Melamine (M208700) and Cyanuric Acid (C987715), and is unique in that it is a halogen-free flame retardant.
Melamine Cyanurate (MCA) is particularly effective in improving fire safety of nitrogen-based polymers, such as polyamides (nylons) and thermoplastics (polyurethane).
Melamine Cyanurate (MCA) can be used in epoxy polymers and in a variety of other substrates.
Melamine Cyanurate (MCA) are widely used in nylon (PolyAmide, PA), TPU, PBT, PET, EVA, epoxy resin, rubber, phenolic resin, polystyrene, acrylic emulsion, PTFE resin and other olefin resin.
Melamine Cyanurate (MCA) can be applied to materials and parts with high requirements for flame retardant insulation grade, wire and cable, electronic appliances, building materials, textile coatings.
Melamine Cyanurate (MCA) can be used as a lubricant with better lubricating properties than molybdenum disulfide, but it is cost-effective.
Melamine Cyanurate (MCA)’s coating film can be used as a lubricant film for rust prevention, as a release agent for steel drawing and stamping, and as a lubricant film for general mechanical transmission parts.
Melamine Cyanurate (MCA) has non-toxicity, good lubricity, can be formulated for skin cosmetics, and can also be used as paint matting agent.
Melamine Cyanurate (MCA) is a halogen-free flame retardant for polyamide, good electrical properties and is environmentally friendly, and used in electrical & electronic applications (connectors, switches, housings, etc).
Melamine Cyanurate (MCA) is primarily used as a flame retardant in plastics and synthetic polymers.
Its high nitrogen content and heat stability allow it to inhibit flames and reduce smoke during combustion.
This makes it essential for materials that require fire resistance without using halogen-based chemicals.
It functions as a condensed-phase flame retardant, absorbing heat and releasing inert gases.
During burning, it emits nitrogen and ammonia that dilute oxygen near the flame zone.
These reactions effectively slow or extinguish flames, protecting the base polymer.
Melamine Cyanurate (MCA) is widely applied in polyamide (nylon) materials, including nylon-6 (PA6) and nylon-66 (PA66).
It helps these materials meet UL 94 V-0 standards, meaning they self-extinguish within seconds after ignition.
This property is crucial for automotive parts, connectors, and electrical housings.
In the automotive industry, Melamine Cyanurate (MCA) is used in the production of engine covers, cable conduits, and fuel system components.
It ensures that critical plastic parts resist fire exposure under extreme heat conditions.
Its ability to maintain strength and rigidity at high temperatures makes it ideal for under-hood applications.
In electrical and electronic components, Melamine Cyanurate (MCA) enhances the flame resistance of switches, sockets, and circuit housings.
It allows devices to meet strict safety and insulation standards.
Its low smoke output makes it a preferred choice for household and industrial electronics.
Melamine Cyanurate (MCA) is also used in rubber manufacturing to create flame-retardant rubber cables, seals, and gaskets.
It prevents fire spread while preserving elasticity and mechanical integrity.
This is important in sectors like transportation, aerospace, and construction.
Melamine Cyanurate (MCA) is incorporated into thermoplastic elastomers and fiber-reinforced composites.
It improves flame resistance without affecting flexibility or color stability.
These composites are used in train interiors, aircraft panels, and insulation materials.
In environmentally conscious manufacturing, melamine cyanurate serves as a halogen-free flame retardant.
It does not release dioxins, furans, or other toxic by-products during combustion.
Therefore, it aligns with global green chemistry initiatives and safety regulations.
Melamine Cyanurate (MCA) is compliant with RoHS (Restriction of Hazardous Substances) and REACH regulations in the European Union.
It is used in consumer goods that require non-toxic and eco-friendly additives.
This includes household appliances, office equipment, and children’s products.
Beyond its practical use, Melamine Cyanurate (MCA) is studied in scientific research as a model compound for hydrogen bonding.
It demonstrates how molecules self-assemble through non-covalent interactions.
This makes it valuable for academic studies in supramolecular and crystal engineering.
Researchers use Melamine Cyanurate (MCA) to analyze molecular stacking and crystal growth in the solid state.
Its layered structure provides insight into intermolecular forces and thermal behavior.
Such studies contribute to advancements in nanomaterials and polymer science.
Melamine Cyanurate (MCA) is also relevant in toxicology and forensic chemistry.
Its formation in kidneys from melamine and cyanuric acid exposure helps scientists understand chemical poisoning mechanisms.
This has supported medical research into renal failure caused by contaminated food or feed.
In industry, Melamine Cyanurate (MCA) is used as a benchmark compound for flame-retardant performance testing.
It helps manufacturers compare new flame-retardant systems against a standardized, well-understood material.
This allows better development of next-generation, non-halogenated fire safety additives.
Melamine Cyanurate (MCA)’s compatibility with nylon and polyester polymers makes it a preferred additive for consumer electronics and electrical safety.
It helps laptops, chargers, and electrical plugs meet international flammability requirements.
These uses contribute to greater product safety and longer equipment lifespans.
In construction materials, Melamine Cyanurate (MCA) is added to plastic insulation, panels, and paints.
It reduces fire spread and smoke emission in building interiors.
As a result, it plays an important role in fire-resistant architecture and safety engineering.
Melamine Cyanurate (MCA) is also utilized in adhesives and coatings that require high heat resistance.
It enhances stability in materials exposed to continuous thermal cycles.
This application is valuable for industrial furnaces, engine parts, and protective finishes.
Because it is thermally stable and chemically inert, MCA is suitable for high-temperature processing environments.
It retains its properties even during polymer extrusion or injection molding.
This makes it convenient for large-scale plastic and composite manufacturing.
In academic laboratories, Melamine Cyanurate (MCA) serves as a reference compound for the study of nitrogen-rich materials.
It helps chemists design new flame-retardant molecules and test hydrogen-bond frameworks.
Its reproducible synthesis makes it a reliable standard in materials chemistry research.
Melamine Cyanurate (MCA) is used wherever fire safety, durability, and environmental compliance are required.
Its role in modern polymer science, engineering, and research continues to expand.
It remains one of the most effective and sustainable halogen-free flame retardants available today.
Melamine Cyanurate (MCA) proves to be excellent flame retardants for specific applications, either alone or combined with our “Exflam APP” ammonium polyphosphate and other flame retardants.
Melamine Cyanurate (MCA) is a high-performance non-halogen flame retardant, and soluble in organic solvent like ethanol, formaldehyde.
It is with fine dispersity for oil-based medium and eco-friendly without toxins and odor. GOYENCHEM-MCA has high stability multiple applications.
Melamine Cyanurate (MCA) can generally serves as flame retardant materials for nylon, acrylic emulsion, Polytetra-fluoroethylene (PTFE), and other olefin resin.
It is greatly flame resistant and does not emit smoke when processed.
Products compounded with Melamine Cyanurate (MCA) will easily meet the standard UL94 V-0. Also, great balance between thermal stability and high FR effect make it effortless to produce complex FR masterbacth.
Flame retardant Melamine Cyanurate (MCA), is a non-halogenated flame retardant for polyamide, glass fiber modified polyamide, polyurethane foam and polyester, especially polyamide, which is suitable for processing of sorts.
For example, extrusion and injection moulding.
It is used as an effective flame retardant, for electrical and electronic applications (connectors, switches, housing, etc) made from TPU. Mflam MCA can be help PA6 and PA66 to UL94V-0, which can succeed on a wheel to recycle.
Safety Profile Of Melamine Cyanurate (MCA):
In flame-retardant manufacturing, Melamine Cyanurate (MCA) is considered non-flammable itself but decomposes at high temperatures to release gases.
These gases, including ammonia and nitrogen oxides, can irritate the eyes, skin, and respiratory tract.
If decomposition occurs in confined areas, it may create oxygen-deficient environments dangerous for workers.
During polymer processing, Melamine Cyanurate (MCA) dust or vapors may cause mild respiratory irritation when inhaled.
Prolonged exposure can lead to coughing or throat dryness.
Adequate ventilation and dust extraction systems are required during mixing and extrusion.
When used in nylon and plastic production, fine particles of Melamine Cyanurate (MCA) can cause mechanical irritation to the eyes.
Contact with skin may result in slight dryness or redness.
Proper personal protective equipment (PPE) such as goggles and gloves should be worn.
In the automotive industry, overheating during molding can decompose Melamine Cyanurate (MCA) and release toxic fumes.
Inhalation of these gases may cause shortness of breath or eye irritation.
Workers should maintain temperature control below 350°C to avoid thermal breakdown.
For electrical and electronic components, Melamine Cyanurate (MCA) itself is non-conductive but may degrade insulation if exposed to strong acids or bases.
Improper storage near reactive chemicals could trigger slow decomposition reactions.
Storage areas must remain cool, dry, and away from oxidizers.
In rubber and elastomer processing, contact with molten materials containing Melamine Cyanurate (MCA) can cause thermal burns.
Dust accumulation near heat sources increases the risk of localized decomposition.
Facilities must be equipped with exhaust hoods and heat-resistant tools.
In fiber-reinforced composites and coatings, dust exposure during grinding or polishing may irritate the nasal passages and eyes.
Repeated exposure can lead to mild inflammation of the upper respiratory system.
Workers should wear respirators and face shields during sanding operations.
Although Melamine Cyanurate (MCA) is halogen-free and eco-friendly, improper burning of waste releases nitrogen oxides and carbon monoxide.
These gases contribute to air pollution and respiratory irritation.
Therefore, disposal must occur via controlled high-temperature incineration.
Even though Melamine Cyanurate (MCA) complies with RoHS and REACH standards, it is not free from occupational hazards.
Inhalation of its fine powder can still cause temporary coughing or sneezing.
Regular air quality monitoring ensures workplace safety.
