Flame Retardant Urea Phosphate

Product name : Flame retardant Urea phosphate

Other name :UP

CAS number : 4861-19-2
EINECS number : 225-464-3

Molecular formula : CO(NH2)2·H3PO4
Molecular weight : 158.6

Characters: white monoclinic crystalline powder, odorless and tasteless.

Property:White crystal, easily soluble in water, but not in organic solution, melting point is 117.3ºC,its water solution is strongly acidic, PH of 1% solution is 1.89, It has got bad heat stability and easily decomposed when heated.

 

Application: Flame retardant Urea phosphate acts as a flame retardant through its ability to release phosphoric acid and ammonia gases when exposed to heat or flames. These gases interfere with the combustion process and reduce the flammability of materials.

Here’s how Flame Retardant Urea Phosphate functions as a flame retardant:

1. Formation of Protective Layer: When a material treated with urea phosphate is exposed to heat or flames, the compound begins to decompose. This decomposition releases phosphoric acid (H₃PO₄) and ammonia (NH₃) gases. These gases form a protective layer over the material’s surface.

2. Dilution of Combustible Gases: Phosphoric acid and ammonia gases dilute the concentration of combustible gases, such as oxygen and volatile organic compounds (VOCs), that are necessary for the combustion process. This reduction in the availability of these gases inhibits the spread of the fire.

3. Formation of Char Barrier: As the material decomposes and the phosphoric acid is released, it reacts with the material’s surface to form a charred barrier. This char layer acts as an insulating shield, preventing heat transfer from the flame to the underlying material. This process slows down the temperature rise and further combustion.

4. Catalytic Effect: Phosphoric acid and ammonia gases also have a catalytic effect on the decomposition of the material’s volatile components. This effect competes with the normal combustion reactions, disrupting the chain reactions that sustain the fire.

5. Flame Cooling: The endothermic nature of the decomposition reactions, meaning they absorb heat, leads to the cooling of the material and its surroundings. This cooling effect helps reduce the intensity of the flame.

6. Reduction of Flammable Gases: The release of ammonia gases can help reduce the concentration of flammable gases in the fire’s vicinity, thus lowering the overall combustibility of the environment.

 

Flame retardant Urea phosphate Product Specification:

 

Packing: 25/50KG woven bag lined with plastic bags, or according to the requirements of customers.

 

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