TF-501 Water Resistant Inorganic APP PU Flame Retardant

Place of Origin CHINA
Brand Name TFCARE
Certification SGS, REACH, ISO
Model Number TF-501
Minimum Order Quantity 200kg
Price Negotiable
Packaging Details 25kg/bag or 1mt /bag , 20mt/fcl with pallets
Delivery Time 5-8days
Payment Terms T/T, L/C, D/P, Western Union
Supply Ability 200 ton per month

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Product Details
Material Grey Powder Ecofriendly Halogen Free
Physical Properties Good Smoke Low
Flexible No Flame Retarant Class B2
Environmentally Environmentally Friendly
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Inorganic PU Flame Retardant


TF-501 PU Flame Retardant


TF-501 Inorganic Flame Retardant

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Product Description

PU Flame Retardant Ammonium Polyphosphate For RPUF Class B2 Used On Insulation Board And Thermal Insulation Pipe Sleeve


Ammonium Polyphosphate is a halogen free flame retardant , which can be used for rigid polyurethane foam instead of TCPP , TCEP . 


On June 12 2020, Japan's Ministry of Finance officially announced that it would temporarily impose anti-dumping duties on phosphorous flame retardant TCPP from China , which is used in building insulation materials , and raise the duties on products related to the tariff to 37.2% in the next four months .


TCPP is a liquid organic phosphorous flame retardant , suitable for flexible and rigid PU foam.

Ammonium Polyphosphate (APP) is inorganic phosphorous flame retardant , suitable for rigid PU foam. 


Ammonium polyphosphate (TF-501) is solid composite halogen-free phosphorus-nitrogen containing intumescent flame retardant, it acts both in the condensed phase and the gas phase.

Technical Data Sheet / Specification :

Specification TF-501
Appearance Gray powder
P2O5 content (w/w) ≥47%
N content (w/w) ≥8%
pH value (10% aqueous suspension, at 25ºC) 6.5-7.5
Moisture (w/w) ≤0.5%


Characteristics :
1. Gray powder, expands when heated, efficient in smoke suppression.

2. Excellent water resistance, not easy to precipitate, high flame retardant efficiency.
3. Halogen-free and none heavy metal ions. pH value is neutral, safe and stable during production and use, good compatibleness, not to react with other flame retardant and auxiliary.


Addition volume:


GB / T 8624-2012 B2 : 15%


Fire Retardancy:

TF-501 Sample
1 2 3 4 5 6
Average self-extinguish time(s) 4 3 2 4 5 3
Flame height(cm) 15 17 13 12 13 15
SDR 83 74 73 88 81 93
OI 28 27 28 28 29 27
Flammability B2


Mechanical Property:

Formulation TF-501 Polyether Rough MDI Foamer Foam stabilizer Catalyzer
Addition(g) 22 50 65 8 1 1
Compression strength(10%)(MPa) 0.15 - 0.25
Tensile strength(MPa) 8 - 10
Foam density (Kg/m3) 70 - 100



TF-501 Water Resistant Inorganic APP PU Flame Retardant 0TF-501 Water Resistant Inorganic APP PU Flame Retardant 1