Melagard P37 is a highly efficient, halogen-free intumescent flame retardant system used in polyolefins (PP, PE, EVA) and various rubber systems. Unlike Ammonium Polyphosphate-based systems, Melagard P37 is composed of phosphorus and nitrogen in an optimized ratio within a single molecule. It provides high flame retardancy, reduced smoke emissions, and lower release of toxic or corrosive gases. Other benefits include low specific gravity, low water sensitivity, high thermal stability, and ease of dispersion in polymer matrices. It was previously introduced as "EXP PP/37".

Chemical Family: Phosphorus-Nitrogen Compounds

Compatible Polymers & Resins: Ethylene Vinyl Acetate (EVA), Polyethylenes (PE), Polyolefins, Polypropylenes (PP)

Features: Good Thermal Stability, Low Specific Gravity, Reduced Water Sensitivity

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Compatible Polymers & Resins
Use Level
18% to 35%
Application Information

MELAGARD P37 dosage ranges from 18% to 35%, depending on type of polymer, formulation, and FR standard to be achieved. For UL-94 V0 (1,6mm) on PP natural homopolymer without antidripping agents, a dosage of 30% is suggested.

Processing Instructions

Thermal stability : stable up to 250°C. Lower melt temperature are always recommended.

Properties

Physical Form
Odor
Odorless
Appearance
Off - white fine powder
Insoluble in
Organic Solvents
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Soluble InWater--
Relative Density1.72--
Flammability (Solid, Gas)Non-flammable--
pH Value (at 100 g/l Concentration)4 - 5--
OdorOdorless--
AppearanceOff-White solid powder--
Particle Size Distribution
ValueUnitsTest Method / Conditions
Particle Size (d98%)max. 30μm-
Bulk Densityapprox. 400kg/m³-
Melting Point (Decomposed)min. 270°C-
Humiditymax. 0.5%-
Densityapprox. 1.7g/cc-
Composition
ValueUnitsTest Method / Conditions
Phosphorus Contentapprox. 20%-
Nitrogen Contentapprox. 19%-
Solubility Data
ValueUnitsTest Method / Conditions
Solubility in Water (at 20°C)max. 0,04g/cc-

Storage & Handling

Transport Recommendations

Not regulated for the transportation. No needing of labelling according to ADR/RID, DOT, IMO, and IATA regulation.