Melamine cyanurate (CAS 37640-57-6): Synthesis and Application of Fluorinated Horner Reagent with Full Analysis
1、 Product Overview
Melamine Cyanurate (MCA) is a halogen-free, nitrogen-based flame-retardant additive formed through the association of melamine and cyanuric acid.
Its key value comes from its high nitrogen content, good thermal stability, low water solubility, and effective flame-retardant performance in selected polymer systems. MCA is particularly well established in flame-retardant polyamide formulations, where it can provide an efficient halogen-free solution while maintaining a good balance of processing and material properties when properly formulated.
Melamine cyanurate is mainly used as a flame retardant and flame-retardant component in engineering plastics, with applications extending across electrical and electronic components, automotive materials, industrial plastics, and other polymer applications where halogen-free flame retardancy is required.
2、 Basic Product Information
Product Name: Melamine Cyanurate
Synonyms:
Melamine cyanurate; Melamine salt of cyanuric acid; Melamine-cyanuric acid complex; 1,3,5-Triazine-2,4,6-triamine compound with 1,3,5-triazine-2,4,6(1H,3H,5H)-trione; MCA
CAS NO.: 37640-57-6
Molecular Formula: C₆H₉N₉O₃
Molecular Weight: Approximately 255.20 g/mol
Appearance: White crystalline powder
Odor: Essentially odorless
Water Solubility: Very low / practically insoluble in water
Main Function: Halogen-free flame retardant
Product Form: Fine powder
Typical Application: Engineering plastics, particularly polyamide-based flame-retardant formulations
Product Manager: Cherry Zhu
Email: Cherry@coreychem.com
3、 Frequently Asked Questions (FAQ)
1) What is the difference between Melamine Cyanurate and conventional halogen-containing flame retardants?
The main advantage of Melamine Cyanurate is that it provides a halogen-free flame-retardant solution based primarily on the nitrogen-rich melamine/cyanuric acid system.
Unlike halogen-containing flame retardants, MCA does not rely on bromine or chlorine to provide its primary flame-retardant effect. It is particularly suitable for polymer formulations where manufacturers are seeking halogen-free materials and where requirements related to smoke, environmental considerations, or electrical applications need to be taken into account.
MCA is especially well established in polyamide engineering plastics, although its suitability depends on the specific polymer and formulation.
2) What are the key physical and chemical properties of Melamine Cyanurate, and what should be considered during operation?
Melamine cyanurate is normally supplied as a white, fine crystalline powder. It has very low water solubility and good thermal stability under appropriate processing conditions.
During handling, dust generation should be minimized. Adequate ventilation and suitable personal protective equipment should be used, particularly during powder transfer, weighing, and compounding operations.
MCA should be protected from excessive moisture and contamination and stored in a tightly closed container. Users should always refer to the latest SDS for detailed occupational, handling, and emergency information.
3) What fields can Melamine Cyanurate be applied to?
Melamine cyanurate is primarily used as a halogen-free flame retardant for polymer materials. Its major application fields include:
- Engineering plastics
- Polyamide 6 (PA6) and Polyamide 66 (PA66)
- Electrical and electronic components
- Automotive plastic components
- Industrial equipment and components
- Flame-retardant polymer compounds
- Other applications requiring halogen-free flame-retardant formulations
Its most important functional advantage is its ability to provide flame-retardant performance in suitable polymer systems without introducing halogen-containing flame-retardant chemistry.
4) What special precautions should be taken during transportation, and how should Melamine Cyanurate be handled after leakage or contact?
During transportation, Melamine Cyanurate should be kept in tightly sealed, compatible packaging and protected from moisture, contamination, and physical damage.
Because MCA is supplied as a fine powder, accidental release can generate dust. In the event of a spill, unnecessary personnel exposure should be avoided, ventilation should be maintained, and the material should be collected using appropriate methods that minimize dust formation.
If the material contacts the skin or eyes, rinse thoroughly with clean water. For significant exposure or persistent irritation, seek appropriate medical attention. Detailed first-aid and spill-response procedures should follow the SDS for the specific product grade.
5) What polymers or materials can Melamine Cyanurate be used with to produce downstream products or formulations?
Melamine cyanurate is primarily used as a functional flame-retardant additive rather than a reactive building block.
It is particularly compatible with selected polyamide systems, including PA6 and PA66, and can be incorporated into polymer compounds through melt compounding.
Depending on the required flame-retardant rating and material properties, MCA may also be used together with other flame retardants, synergists, stabilizers, fillers, and processing additives.
The appropriate loading level and formulation should be determined through testing of flame-retardant performance, mechanical properties, thermal stability, processing behavior, and the requirements of the final application.
4、 Application Cases
1) Engineering Plastics – Halogen-Free Flame Retardant for Polyamides
Melamine cyanurate is widely used as a halogen-free flame retardant in polyamide engineering plastics, particularly PA6 and PA66.
During polymer processing and exposure to elevated temperatures, MCA contributes to flame-retardant performance through its thermal decomposition behavior and nitrogen-rich structure. In properly optimized formulations, it can help reduce the flammability of polyamide materials and improve their resistance to ignition and flame propagation.
This makes MCA particularly valuable for engineering plastics used in applications where flame resistance and halogen-free formulations are important.
2) Electrical and Electronic Materials – Flame-Retardant Components
Melamine cyanurate can be incorporated into flame-retardant engineering plastics used for electrical and electronic components.
Potential applications include connectors, terminal components, switches, housings, and other molded plastic parts where flame resistance and electrical insulation are required.
The use of MCA allows formulators to develop halogen-free flame-retardant compounds while maintaining the performance characteristics required by the particular electrical or electronic application.
3) Automotive Materials – Flame-Retardant Engineering Plastics
MCA can be used in selected automotive engineering-plastic formulations, particularly where polyamide materials are required to provide a combination of mechanical performance, thermal resistance, and flame retardancy.
Potential applications include electrical connectors, sensor housings, terminal components, and other plastic parts associated with automotive electrical and electronic systems.
As automotive systems become increasingly electrified, flame-retardant and halogen-free polymer materials are becoming increasingly relevant for selected components.
4) Industrial Plastics – Flame-Retardant Polymer Compounds
Melamine cyanurate can be used in industrial polymer compounds where flame resistance, thermal stability, and halogen-free formulation requirements are important.
It can be incorporated into engineering-plastic formulations through conventional compounding and molding processes. The final formulation can be adjusted using other additives to achieve the required combination of flame-retardant performance, mechanical properties, processing characteristics, and appearance.
5) Halogen-Free Flame-Retardant Systems – Synergistic Formulation
Melamine cyanurate can also serve as one component of a multi-component halogen-free flame-retardant system.
Depending on the polymer matrix and target performance, it may be combined with other nitrogen-, phosphorus-, mineral-, or carbon-based flame-retardant components and synergists.
Such formulation design can help optimize flame-retardant efficiency and balance it against mechanical strength, thermal stability, electrical properties, processing behavior, and other requirements of the finished polymer.
6) Polymer Compounding – Functional Additive for Flame-Retardant Materials
In polymer compounding, MCA is introduced into the polymer matrix during mixing and processing.
The additive is dispersed throughout the polymer and contributes to the overall flame-retardant system. Proper particle size, dispersion, loading level, and processing conditions are important for achieving consistent performance.
For commercial applications, the formulation should be validated according to the applicable flame-retardancy standard and the specific requirements of the finished product.
5、 Safety and Storage
Store Melamine Cyanurate in a cool, dry, and well-ventilated area and keep the original container tightly sealed.
Protect the product from excessive moisture, contamination, and direct exposure to unfavorable storage conditions.
Because MCA is supplied as a powder, avoid unnecessary generation and inhalation of dust during handling. Appropriate ventilation and personal protective equipment should be used during weighing, transfer, mixing, and compounding.
Keep the product away from incompatible materials as specified in the applicable SDS. During transportation and long-term storage, use compatible, tightly sealed packaging and follow the latest SDS and applicable local chemical-storage and transportation regulations.
6、Product Manager Information
Product Manager: Cherry Zhu
Email: Cherry@coreychem.com
