Flame Retardants, Red Phosphorus

PA-50 Red Phosphorus Flame Retardant Masterbatch

PA-50 is a halogen-free red phosphorus flame retardant masterbatch engineered for PA6 and PA66 systems that require high mechanical strength and V-0 flame performance. It uses stabilized, microencapsulated red phosphorus dispersed in a high-purity polyamide carrier, ensuring uniform dispersion, strong compatibility and safe, clean processing. PA-50 delivers UL94 V-0 at 2.0 mm with only 10–13 percent addition while maintaining impact performance, thermal stability and electrical insulation in reinforced polyamide compounds.

Attributes

Key Features and Benefits

UL94 V-0 at 2.0 mm with only 10–13 percent addition.
High impact strength performance up to 23 MPa for demanding engineering parts.
Kindle temperature ≥360 °C supports safe high-temperature PA processing.
Non-corrosive formulation with minimal phosphine or acid release.
Microencapsulated RP in PA carrier ensures excellent miscibility and uniform dispersion.
Clean, dust-free pellets improve handling safety and dosing accuracy.
Halogen-free and compliant with RoHS, REACH and SGS certification.
Maintains tensile, flexural and overall mechanical integrity in glass-fiber-reinforced PA systems.

Specifications

Technical Highlights

Appearance: Dark red pellets.
Red phosphorus content: ≥50 percent.
Carrier resin: Polyamide (PA).
Density: 1.4–1.6 g/cm³ (ASTM D792).
Moisture content: ≤0.5 percent (ASTM D570).
Kindle temperature: ≥360 °C.
Melting temperature: 150 °C (DSC).
Impact strength: 15–23 MPa (ISO 179).
Tensile strength: ~139 MPa (ISO 527).
Flexural modulus: ~9135 MPa (ISO 178).
Recommended addition: 10–13 wt percent (for UL94 V-0 at 2.0 mm).
Compatible polymers: PA6, PA66, PA blends.
Classification: Non-dangerous goods.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Electrical and electronics: connectors, switches, terminal blocks, plug housings, cable systems.
Automotive: under-hood components, relay housings, ducts, electrical modules.
Consumer appliances: housings, plugs, functional fire-safe components.
Industrial parts: power tools, fittings, technical polymer components.
Compounding and masterbatch production: reinforced PA6/PA66 V-0 formulations.
Compatible polymer systems: PA6, PA66, PA blends with mineral or elastomeric modifiers, Glass-fiber-reinforced black or red PA applications