Melamine Cyanurate (MCA)
| HS Code | 992570 |
| Chemical Formula | C6H6N12O6 |
| Molecular Weight | 342.24 g/mol |
| Appearance | White crystalline powder |
| Odor | Odorless |
| Density | 2.5 g/cm³ |
| Melting Point | Decomposes above 350 °C |
| Solubility In Water | Insoluble |
| Solubility In Organic Solvents | Insoluble in most common organic solvents |
| Thermal Stability | Good thermal stability |
| Flame Retardant Property | Effective flame retardant |
As an accredited Melamine Cyanurate (MCA) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | To package Melamine Cyanurate (MCA), industrial grade uses plastic woven bags wrapped with inner film, tied with ropes and sewn tightly; electronic grade uses aluminum foil bags to evacuate, wrapped with foam and put into boxes, all to prevent moisture. |
| Storage | To store Melamine Cyanurate (MCA), choose a dry warehouse, such as storing dry goods in a cool room, away from moisture. Place the goods on wooden pallets to prevent moisture from the wall from seeping in. Do not stack more than four layers, such as piling stones to make a platform, which is stable and does not tilt, to avoid damaging the packaging. The warehouse should be ventilated frequently to prevent it from caking and keep the properties of Melamine Cyanurate (MCA) unchanged. |
| Shipping | When transporting Melamine Cyanurate (MCA), it should be protected by a tent to avoid wind and rain. After loading, cover it tightly with oilcloth to prevent rain from seeping into the bag. When loading and unloading, handle it with care, like treating fine porcelain, do not throw or drop it. If the packaging is broken, replace it with a new medicine bag quickly to prevent Melamine Cyanurate (MCA) powder from scattering and ensure that it arrives intact. |
Competitive Melamine Cyanurate (MCA) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
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Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
In ancient times, fire prevention was done by grinding minerals into powder. In modern times, plastics are booming, and halogen-free flame retardants are needed. Craftsmen combined melamine and cyanuric acid to obtain Melamine Cyanurate (MCA). At first, it repelled resin, but after three years of grinding process, it can now be evenly dispersed in it, becoming a good flame retardant material for engineering plastics.
Product Overview
Melamine Cyanurate (MCA) is a white crystalline powder, odorless, insoluble in water, flame retardant and lubricating. It can be added to nylon and polyester without damaging their toughness. It is mostly used in home appliance housings and automotive parts, and its flame retardancy reaches UL94 V-0 level.
Physical & Chemical Properties
Melamine Cyanurate (MCA) has a density of 1.5g/cm³, a melting point of about 350℃, a particle size of 2-5μm, is slippery to the touch, decomposes into inert gas when heated, is non-flammable, non-corrosive to metals, stable at room temperature, and slightly hygroscopic.
Technical Specifications & Labeling
Melamine Cyanurate (MCA) is standard, with a purity of ≥99%, a moisture content of ≤0.3%, a pH of 6-8, and the full name of Melamine Cyanurate (MCA) must be written on the label, with a particle size and purity report attached.
Preparation Method
Melamine Cyanurate (MCA) is prepared by dissolving melamine and cyanuric acid in water in proportion, heating to promote the reaction and crystallization, centrifugation and drying to obtain Melamine Cyanurate (MCA), and temperature control is performed throughout the process to prevent impurities.
Chemical Reactions & Modifications
Melamine Cyanurate (MCA) decomposes when exposed to high temperatures to generate a carbon layer and flame-retardant gaseous substances. The carbon layer covers the surface of the material, like a barrier, isolating oxygen and heat sources; the flame-retardant gas diffuses in the burning area, inhibiting the spread of flames, thus exerting a flame retardant effect. If used in conjunction with phosphorus flame retardants, the two work synergistically, like a pair of swords, and the flame retardant effect is more significant. At room temperature, Melamine Cyanurate (MCA) is stable in nature and does not chemically react with materials such as plastics. It is not easy to deteriorate during storage and can maintain its performance for a long time.
Synonyms & Product Names
Melamine Cyanurate (MCA) is also known as "melamine cyanurate (MCA)", but in trade and technical documents, the full name Melamine Cyanurate (MCA) must be written to clarify the specifications.
Safety & Operational Standards
When handling Melamine Cyanurate (MCA), masks and gloves must be worn, and work must be done in a ventilated area. Wash hands after finishing. Eating and drinking are prohibited in the storage area, and waste must be disposed of in accordance with regulations.
Application Area
Melamine Cyanurate (MCA) is mostly used in PA6, PA66, PBT, etc. as a flame retardant. It is commonly used in connectors, coil skeletons, and power tool shells. The flame retardant effect can be achieved by adding 15-20%.
Research & Development
Artisans are researching the surface modification of Melamine Cyanurate (MCA) to improve its dispersibility in plastics, explore compounding with nanomaterials, reduce dosage and improve efficiency, and expand into new fields.
Toxicity Research
Melamine Cyanurate (MCA) has low toxicity, rat oral LD50＞5000mg/kg, non-teratogenic, long-term contact with dust or throat discomfort, it is harmless with proper protection.
Future Prospects
With the increase in demand for halogen-free flame retardants, the demand for Melamine Cyanurate (MCA) will increase by 10% annually, the process will develop towards low energy consumption, or it will be used in new energy components, becoming a mainstream flame retardant.
Where to Buy Melamine Cyanurate (MCA) in China?
As a trusted Melamine Cyanurate (MCA) manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Melamine Cyanurate (MCA) supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
How to control the reaction ratio when preparing Melamine Cyanurate (MCA)?
This product is made by using melamine and cyanuric acid as raw materials, and adding them into a stainless steel reactor at a molar ratio of 1:1, adding deionized water as the medium, and the solid-liquid ratio is 1:5. The temperature is raised to 90℃, the stirring rate is 40 rpm, and the reaction is carried out for 3 hours. The pH value of the slurry needs to be measured during the process and maintained at 5.5-6.0. If the taste is controlled by a spoon, if it is acidic, there is excessive cyanuric acid, and if it is alkaline, there is residual melamine. After the reaction is completed, it is cooled to 30℃, crystals are precipitated, centrifuged and dehydrated, and dried at 80℃ to obtain a white powder, namely Melamine Cyanurate (MCA). Its purity reaches 99.5%, the nitrogen content is 67%±0.2%, and the moisture content is <0.1%. This process is like the balance of yin and yang, and only when the proportion is appropriate can a product with regular crystals be obtained, which is an important material for nylon flame retardancy.
What is the effect of Melamine Cyanurate (MCA) in nylon products?
This product is added to nylon 6 at a dosage of 15%, mixed by a twin-screw extruder (temperature 230-250℃), and the flame retardant of injection molded strips reaches UL94 V-0 level (0.8mm), and the oxygen index increases from 21% to 32%. The tensile strength is retained by 90%, reaching 65MPa, and the impact strength is 5.8kJ/m², which is only 8% lower than that without addition. In nylon 66, the addition amount is 18%, and the heat deformation temperature is retained at 210℃, which is suitable for engine compartment parts. It has good compatibility with glass fiber and enhances the bending strength of nylon to 180MPa. Therefore, it is widely used in nylon products such as automotive connectors and electronic connectors. There is no dripping when burning, the carbon layer is tough, and the fire retardant effect is long-lasting.
What is the difference between Melamine Cyanurate (MCA) and other nitrogen flame retardants?
Compared with melamine, Melamine Cyanurate (MCA) has better thermal stability, with a weight loss rate of only 2% at 350℃, while melamine is 10%, so it is resistant to high processing temperatures. It has better dispersibility in nylon, with no agglomeration at a particle size of 20μm, while melamine is easy to agglomerate. It has high flame retardant efficiency, and the oxygen index is 3-5 percentage points higher at the same addition amount, because the cyanuric acid group in the molecule is more likely to promote carbonization. Although the cost is 15% higher than melamine, the dosage can be reduced by 20%, and the overall cost is lower, making it the preferred choice for high-performance nylon flame retardant.
How is the water resistance of Melamine Cyanurate (MCA) manifested?
When nylon specimens containing 15% MCA were immersed in 80℃ hot water for 90 days, the weight loss rate was only 1.2%, which is much lower than the 5% of melamine. Its solubility in water is 0.05g/100mL. There is no white frost on the surface after soaking, and the flame retardant level remains V-0. It is used for bathroom nylon parts. After long-term water vapor erosion, the mechanical properties are retained by 85%, so it is suitable for products in humid environments to solve the problem of poor water resistance of traditional nitrogen flame retardants.
What are the specifications for the processing and storage of Melamine Cyanurate (MCA)?
This product is packaged in kraft paper bags, 25kg per bag, lined with PE film, and stored in a dry warehouse with a relative humidity of <60% and a stacking height of no more than 8 bags. No drying is required before processing. When mixing with nylon, the screw speed is 200 rpm to avoid excessive shearing and particle size reduction. It has low dust flying, and KN90 masks can be worn during operation. The equipment needs to be grounded to prevent static electricity. In case of agglomeration, it can be reused after screening with a 100-mesh sieve, and the performance remains unchanged.
