Melagard MC 25 is a salt of melamine and cyanuric acid, used as a halogen-free flame retardant and smoke suppressant agent for organic polymers. It is compatible with a wide range of polymers including epoxies (EP), polyesters, polyolefins, polyamides (PA 6 and PA 66), and polyurethane (PU) foam. This powder-form product is employed in various processing methods such as extrusion, injection molding, compression molding, and compounding. With good thermal stability, it provides enhanced flame retardancy and smoke suppression, and is also suitable for industrial oils and fluids in lubricant applications.

Chemical Name: Melamine Cyanurate

Chemical Family: Melamine Cyanurates

Labeling Claims: Halogen-free

Compatible Substrates & Surfaces: Polyurethane (PU) Foam

Synonyms: Melamine isocyanurate, Melamine-cyanuric acid compd., Melamine-isocyanuric acid compd., NSC 231587

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Fluids & Lubricants Type
Coating End Applications
Fluids & Lubricants End Use
Plastics & Elastomers Processing Methods
Use Level
8 to 12% w
Application Information

Melamine cyanurate is the elective product for flameproofing clear unfilled PA articles with halogen free additive. As sole additive at a concentration ranging from 8 to 12% w, it is in position to achieve high demanding applications (UL 94 V0) in nylons (PA66 and PA6) showing also good retention of tensile strength properties and significant increase of tensile modulus. It is also effective in polyesters, PU foams, epoxy resins, styrenics, polyolefins and back side coatings, in combination with suitable coagents. Other applications: lubricants and adhesion agents.

Processing Instructions

Safest MC 25 is endued with high thermal stability, therefore it is in position to overcome both extrusion and injection moulding processing conditions typical of engineering plastics. In order to maximize the flame proofing effect of the product, the compounding processes are generally carried out on corotating twin screw extruders by feeding the product in the main hopper and using predried polymers, if necessary. Can also be used in single screw extruders, internal batch mixers (Bandbury) and roll mills. Safest MC 25 does not interact with the common processing additives like: stabilisers, crosslinking agents, processing aids, inorganic fillers, pigments, etc.

Properties

Color (Properties)
Physical Form
Odor
Odorless
Appearance
Off - white fine powder
Physical Properties
ValueUnitsTest Method / Conditions
pH Value (saturated sol)5 - 6--
Water Solubility (at 20°C)0.001g/100ml-
Bulk Density250 - 350kg/m³-
Specific Gravity (at 23°C)1.7g/cc-
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Decomposition Temperature350°C-
Auto Ignition TemperatureNot available--
Partition Coefficient (N - octanol/water)-2.28--
Solubility in Water (at 20°C)2.7mg/L-
Solubility (at 20°C)2.7g/l-
Relative Density (Bulk density)300 - 450--
Vapor PressureNot available--
Flammability (Solid, Gas)Non-flammable--
Fire PointNot available--
Melting Point (Decomposition Temperature)350°C-
pH Value (at 50 g/l Concentration)5 - 6.5--
OdorOdorless--
AppearanceOff-White solid--
Particle Size Distribution
ValueUnitsTest Method / Conditions
Particle Size (d98%)max. 25μm-
Particle Size (d50%)max. 4μm-
Specifications
ValueUnitsTest Method / Conditions
Oral Toxicity LD₅₀ (rat)min. 2000mg/kg-
Molecular Weight255.2--

Packaging & Availability

Packaging Information

The product is available in 20 Kg polyethylene bags in cardboard boxes or in 400 Kg big bags.

Storage & Handling

Storage and Handling Information

The product is stable if maintained in the original bags and in a dry place at room temperture. Handle the product in compliance with good industrial practice avoiding dust formation.