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Flame retardant MFR-504L Featured Image
  • Flame retardant MFR-504L

Flame retardant MFR-504L

  • Product Name: Flame retardant
  • Product Grade: MFR-504L
  • P content(wt.%): 10.9
  • Cl content(wt.%): 23
  • PACKAGE: 250KG/DR

    • Product Detail

    Product Tags

    Description

    MFR-504L is an excellent flame retardant of chlorinated polyphosphate ester, which has the advantages of low atomization and low yellow core. It can be used as a flame retardant of polyurethane foam and other materials, which can meet the low atomization performance of automobile flame retardant. Automobile use is its main feature. It can meet the following flame retardant standards: US: California TBI17, UL94 HF-1, FWVSS 302, UK: BS 5852 Crib5, Germany: automotive DIN75200, Italy: CSE RF 4 Class I

    Application

    MFR-504L is Suitable for automotive interiors and other high-quality flexible PU foam systems.

    Flame retardant MFR-504L (1)
    Flame retardant MFR-504L (2)

    Typical Properties

    Physical properties Colorless transparent liquid
    P content,% wt 10.9
    CI content,% wt 23
    Color(Pt-Co) ≤50
    Density(20°C ) 1.330±0.001
    Acid value, mgKOH/g <0.1
    Water content,% wt <0.1
    Odor Nearly odorless

    Safety

    • Wear protective clothing including chemical goggles and rubber gloves to avoid eye and skin contact. Handle in a well ventilated area. Avoid inhalation of vapor or mist. Wash thoroughly after handling.

    • Keep away from heat, sparks and open flame.

    FAQ

    I manufacture automotive polyurethane foam requiring low fogging (VDA 278). Why choose MFR-504L?

    MFR-504L is a chlorinated polyphosphate ester specifically designed for low fogging and low yellow core, meeting automotive interior standards.

    My foam needs to pass BS5852 Crib 5. What dosage of MFR-504L works?

    For furniture foam, 10–15 phr often achieves Crib 5; test with your specific formulation.

    What is the advantage of chlorinated phosphate ester over non-halogenated types?

    Higher efficiency at lower loading; MFR-504L gives good flame retardancy with less negative impact on foam physical properties.

    Can MFR-504L be used in both slabstock and molded foam?

    Yes, it is suitable for block, high-resilience, and molded polyurethane foams.

    My foam has poor tear strength with other flame retardants. Will MFR-504L affect tear strength?

    It has minimal impact on mechanical properties at recommended levels (8–12 phr).

    Does MFR-504L cause corrosion on processing equipment?

    No more than typical chlorinated phosphates; use stainless steel for longterm contact.

    What flammability standards can MFR-504L help meet?

    California TB117, UL94 HF-1, FMVSS 302, and BS5852 Crib 5.

    Is MFR-504L compatible with melamine as a co-flame retardant?

    Yes, synergistic effect; a blend of 8 phr MFR-504L + 10 phr melamine works well.

    My foam has a strong odor after curing. Does MFR-504L contribute to odor?

    No, it is low-odor; any residual smell is usually from amines, not the flame retardant.

    How should I store MFR-504L?

    In a cool, dry place; keep container sealed to prevent moisture absorption.

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