68333-79-9 IFR Intumescent Flame Retardant For Wood

Place of Origin CHINA
Brand Name Taifeng
Certification ISO9001, REACH, SGS
Model Number TF-201
Minimum Order Quantity 25KGS
Packaging Details 25kg/bag, 24mt/20'fcl without pallets, 20mt/20'fcl with pallets
Delivery Time 5-8days
Payment Terms D/P, T/T
Supply Ability 500mt/month

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Product Details
Molecular Formula (NH4PO3)n N>1000 CAS NO 68333-79-9
HS CODE 28353990 EINECS No 269-789-9
P 31%~32% N 14%~15%
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IFR Intumescent Flame Retardant


68333-79-9 Intumescent Flame Retardant


Intumescent Flame Retardant For Wood

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Product Description

Intumescent Flame Retardant Phosphorous And Nitrogen Intumescent Fire Retardant Paint For Steel And Wood


Intumescent fire retardant (IFR) is an environmentally friendly green flame retardant that does not contain halogens or uses antimony oxide as a synergistic agent. Intumescent flame retardant steel painting surface will be generated when burnt carbon foam layer, insulation, oxygen, smoke suppression, and drip-proof, etc, it has excellent flame retardant properties, and low smoke, low toxicity, no corrosive gas.


Intumescent fire retardants have three basic elements. acid source, carbon source, and gas source.


The acid source also is known as the dehydrating agent or carbonization accelerator, generally inorganic acid or combustion can in situ acid formation of compounds, such as phosphoric acid, boric acid, sulfuric acid, and phosphate ester;

The carbon source is also called carbon agent, which is the basis of forming foam carbonization layer. It is mainly some polyhydroxy compounds with high carbon content, such as starch, sucrose, dextrin, pentaerythritol, ethylene glycol, phenolic resin, and so on;

The gas source is also called foaming source, is containing nitrogen compounds, such as urea, melamine, polyamide, and so on.


Among the three components, the acid source is the most important, with the largest proportion, and the fire retardant element is contained in the acid source. Therefore, the acid source is the fire retardant in the true sense, while the carbon source and the blowing agent are the co-agents.


TF-201 is Ammonium Polyphosphate phase II, is particularly suitable as an acid source for intumescent steel coatings


Specification :

Specification TF-201
Appearance White powder
P (w/w) ≥31%
N (w/w) ≥14%
Decomposition Temperature (TGA, 99%) >275℃
Solubility (10% aq. , at 25ºC) <0.45%
pH value ( 10% aq. At 25ºC ) 5.5-7.5
Viscosity (10% aq, at 25℃) <20 mpa.s
Moisture (w/w) <0.25%
Average Partical size (D50) 15~25µm
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