Composite Flame Retardant for PVC

Polyvinyl chloride (PVC) is an unusual plastic with a higher chlorine content than most other plastics and therefore has excellent flame retardant properties. However, many plasticizers added in the processing of PVC can significantly reduce its flame retardant function, making flame retardant treatment necessary.

Composite Flame Retardant for PVC

Alfa Chemistry offers composite flame retardant for PVC, chemically modified from environmentally friendly organic and inorganic compounds. It is manufactured through rigorous material selection, advanced production equipment and excellent workmanship. It is highly synergistic with halogenated flame retardants and can replace antimony trioxide (Sb2O3) in equal amounts.

composite flame retardant for PVC


AppearanceWhite Powder
Whiteness≥ 95
Moisture Content≤ 0.5%
Sb2O3 Content≥ 50%
Content of Zinc (Zn) Compounds≥ 15%
Content of Magnesium (Mg) Compounds≤ 5%
Particle Size2-4 μm D50


Our composite flame retardant for PVC mainly has the following advantages:

  • It is well dispersed in plastics and does not have any negative effect on the physical properties and processability of the material.
  • It can be used in PVC products instead of Sb2O3, which saves the dosage of Sb2O3 and reduces the introduction of heavy metals, and meets RoHS directive requirements.

Usage and Dosage

This product is specially designed for PVC products, and can directly replace Sb2O3 in the same proportion. PVC wire and cable products manufactured with it have high oxygen index, can pass the VW-1 flammability test. Meanwhile, the product also has excellent resistance to high and low temperatures, aging resistance, mechanical properties and electrical properties.

Choose Alfa Chemistry

Alfa Chemistry has long been committed to the research and development of flame retardants, as well as the exploration and promotion of their applications. Our advanced testing methods and strict quality control system make our products stable and reliable. At the same time, we provide targeted formulations and optimized flame retardant solutions according to the different needs of our customers. For more information, please feel free to contact us.

※ Please kindly note that our products and services are for research use only.