MXFR-TEP: High-Efficiency Halogen-Free Flame Retardant
MXFR-TEP is a premium, halogen-free flame retardant chemically known as Triethyl Phosphate (TEP). Engineered for high performance and environmental compliance, this factory-direct additive provides excellent flame retardancy, low viscosity, and exceptional compatibility. It is widely utilized as a core flame retardant and viscosity depressant in rigid polyurethane foams and various industrial resin systems.
Product Identification
| Category | Specification |
| Chemical Name | Triethyl Phosphate (TEP) |
| CAS Number | 78-40-0 |
| Product Function | Halogen-Free Flame Retardant / Industrial Solvent |
| Appearance | Colorless Transparent Liquid |
Typical Physical & Chemical Properties
We maintain stringent quality control to ensure ultra-high purity and consistency for wholesale and large-scale industrial manufacturing:
| Property | Typical Value | Unit |
| Purity | ≥ 99.5 | % |
| Phosphorus Content | ~ 17.0 | % |
| Acid Value | ≤ 0.05 | mg KOH/g |
| Water Content | ≤ 0.20 | % |
| Specific Gravity | 1.069 – 1.073 | @ 25°C, g/cm³ |
| Refractive Index | 1.4050 – 1.4070 | nD20 |
| Color (Pt-Co) | ≤ 20 |
Key Features & Advantages
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Halogen-Free Compliance: Contains no halogens, making it an eco-friendly choice that meets modern environmental and safety regulations.
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High Phosphorus Content: Delivers exceptional flame-retardant efficiency, significantly improving the fire resistance of the final polymer matrix.
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Viscosity Depressant: Features low viscosity, making it highly effective at reducing the overall viscosity of complex polyol blends and prepolymers.
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Excellent Solubility: Acts as a powerful solvent and blends seamlessly into polyurethane systems without phase separation.
Suggested Applications
MXFR-TEP is a highly versatile chemical additive designed for broad industrial applications:
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Rigid Polyurethane Foams (PUR/PIR): The primary choice for flame retarding rigid insulation foams, panels, and spray foams, ensuring excellent structural stability.
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Plastics & Resins: Widely used as a flame retardant and plasticizer in unsaturated polyester resins, phenolic resins, and cellulose acetate.
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Industrial Solvents: Functions as an efficient solvent in chemical synthesis, agricultural chemicals, and specialized coatings.
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Catalysts & Intermediates: Utilized as a reactive intermediate in the manufacturing of various chemical compounds.
Packaging & Storage
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Standard Packaging: Available in 200kg net iron drums or 1000kg IBC tanks to accommodate bulk wholesale requirements.
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Storage Guidelines: Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed to prevent moisture absorption. Avoid exposure to direct sunlight and keep away from strong oxidizers.




