Halogen-free for polyamides
Gives unreinforced PA6 and PA66 UL 94 V-0 without halogens.
MC
Melamine Cyanurate (MC) Supplier from China
Melamine cyanurate (MC) is a halogen-free nitrogen flame retardant for unreinforced PA6 and PA66, TPU and other polymers. SUNCHEM supplies melamine cyanurate with a batch COA on every shipment; the TDS is sent on request.
CAS 37640-57-6 · C₆H₉N₉O₃ · Melamine–cyanuric acid salt
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
Melamine cyanurate is a salt of melamine and cyanuric acid. Above about 320 °C it decomposes endothermically, releasing inert nitrogen gases that dilute the flame and helping the melt drip away from the flame. That makes it the standard halogen-free flame retardant for unreinforced PA6 and PA66 reaching UL 94 V-0, and it is also used in TPU, epoxy and other polymers.
Fine, uniform particle size matters for mechanical properties and surface finish; purity and whiteness matter for light colors.
Clean and white
White powder with low smoke and no corrosive gas.
Specified on your terms
We quote against your purity, particle size, moisture and whiteness and send the batch COA for each lot.
Technical specifications
| Parameter | Typical value |
|---|---|
| Product name | Melamine Cyanurate |
| Synonyms | MC; MCA; melamine–cyanuric acid compound |
| CAS No. | 37640-57-6 |
| Molecular formula | C₆H₉N₉O₃ |
| Molecular weight | 255.2 |
| Appearance | White powder |
Purity, particle size, moisture and whiteness limits depend on the producer grade and are stated on the TDS and batch COA; the limits for your order are confirmed in the quotation and contract.
Applications by Polymer
Where MC is used, and what to confirm before you switch supply.
Unreinforced polyamides
The standard halogen-free flame retardant for unreinforced PA6 and PA66 connectors and electrical parts.
Check before trial
- UL 94 class and thickness
- Particle size
- Monthly volume
TPU and elastomers
Used in TPU for cable jackets and films.
Check before trial
- Cable or film standard
- Fine particle size
- Bag size
Epoxy, coatings and others
Used in epoxy, intumescent coatings and other polymers, often with phosphorus flame retardants.
Check before trial
- Formulation
- Purity
- Sample for trials
Selection & comparison
Choosing the right MC grade
| Your requirement | What usually works |
|---|---|
| Unreinforced PA6 / PA66 | Standard MC with fine particle size |
| TPU and thin films | Specify finer particle size |
| Glass-filled polyamides | Ask: MC alone is usually not enough; phosphorus systems are used |
| Replacing an existing supplier | Send your current TDS or COA; we quote against the parameters you approve |
Packaging & storage
Packaging
Tell us the bag or drum size and pallet requirements you need; we confirm the packaging with the quotation.
Storage
Keep bags closed in a dry store.
From first email to approved supply
Name the end use
Name the polymer and the fire rating you must meet — UL 94 class and thickness, LOI or cable standard.
Compare the numbers that matter
Purity, particle size (D50 and D98), moisture and whiteness.
Check dispersion
Particle size and dispersion decide impact strength; compare mechanical results, not only the fire test.
Trial, then lock the spec
Compound a trial batch, run your fire and mechanical tests, and keep the approved lot COA as the reference.
Tell us your requirement. We match the grade.
Tell us the polymer, the fire rating you need, the quantity and the destination port. Add your current specification and we will quote against it.
| Information | Example |
|---|---|
| Application | PA6, PA66, TPU, epoxy |
| Required specification | Purity, particle size, whiteness |
| Packaging | Bag or drum size; pallets |
| Quantity | Sample / trial order / annual volume |
| Destination | Country and port |
| Documents needed | COA, SDS, TDS, RoHS/REACH |
Related products
Melamine Cyanurate (MC) FAQ
What is melamine cyanurate used for?
As a halogen-free flame retardant for unreinforced PA6 and PA66, TPU, epoxy and other polymers.
Is MC suitable for glass-filled nylon?
Usually not on its own; glass-filled polyamides normally use phosphorus-based systems.
Which parameters should I compare between offers?
Purity, particle size, moisture and whiteness.
Can I get the TDS?
Yes. Send an inquiry with your polymer and target rating and we email the TDS.
