Halogen-free Flame Retardant


Flame retardants play a pivotal role in enhancing the fire resistance of polymer materials and are typically classified into halogen-based flame retardants and halogen-free flame retardants based on their composition. While halogen-based flame retardants are highly effective in preventing smoke and flame, research suggests that halogen-free retardants are more favorable in terms of safety for both humans and the environment. This is due to the absence of halogen elements like chlorine, bromine, or fluorine in their composition, which means that halogen-free flame retardants do not emit toxic fumes when exposed to fire and exhibit superior environmental compatibility. Consequently, they are steadily replacing halogen-based flame retardants and are being extensively utilized across a variety of industries such as electronics, construction, and transportation.



Halogen-free flame retardants are mainly classified into the following types:

  • Phosphorus-based halogen-free flame retardants:

Phosphorus-based flame retardants are one of the most widely used types of halogen-free flame retardants. They work by forming a protective char layer on the material's surface when exposed to heat or flames, preventing the spread of fire. Examples of phosphorus-based flame retardants include phosphates, phosphonates, and phosphinates.

  • Nitrogen-based halogen-free flame retardants:

Nitrogen-based halogen-free flame retardants work by releasing nitrogen compounds when exposed to fire, which dilute the oxygen in the combustion zone and inhibit the ignition and propagation of flames. Melamine, guanidine, and melamine cyanurate are common examples of nitrogen-based halogen-free flame retardants.

  • Inorganic halogen-free flame retardants:

Inorganic flame retardants, such as aluminum hydroxide and magnesium hydroxide, are widely used as halogen-free options due to their effectiveness in reducing the flammability of materials. These compounds work by releasing water vapor when exposed to heat, thereby diluting the combustible gases and suppressing the spread of flames.

Our Products

Alfa Chemistry is a leader in the field of halogen-free flame retardants. We primarily offer the following products to our customers:

Alfa Chemistry's Custom Service

Whatever halogen-free flame retardant you want, Alfa Chemistry can provide for you. With years of accumulated industry knowledge and production experience, our team of experts is capable of providing you with cutting-edge solutions.

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