Polyvinyl Chloride (PVC) is a ubiquitous material in industries ranging from construction and electronics to automotive. Its inherent properties, combined with effective additives, make it suitable for a vast array of applications. When it comes to fire safety, particularly in sensitive areas like electrical cables and housings, Antimony Trioxide (Sb2O3) plays a pivotal role. As a leading supplier of chemical auxiliaries, we understand the critical importance of high-quality Antimony Trioxide for PVC manufacturers seeking to enhance flame retardancy and ensure product safety.

Antimony Trioxide, identified by CAS number 1309-64-4, functions as a potent synergist in PVC formulations, especially when used alongside halogenated compounds. The synergy arises from the chemical interactions that occur during a fire. When heated, Sb2O3 reacts with halogenated flame retardants to form antimony halides. These halides are volatile and enter the gas phase, where they effectively trap the free radicals that propagate the flame. This radical scavenging mechanism interrupts the combustion chain reaction, significantly reducing the flammability of the PVC material. Furthermore, Antimony Trioxide can contribute to the formation of a protective char layer on the PVC surface, providing an additional barrier against heat and oxygen, thereby enhancing overall fire resistance.

The application of Antimony Trioxide in PVC is particularly critical in products where fire performance is non-negotiable. This includes electrical wire and cable insulation, where smokeless and flame-retardant properties are essential for safety. It is also widely incorporated into PVC compounds for construction materials, automotive interiors, and electronic device enclosures. By using our high-purity Antimony Trioxide, manufacturers can achieve superior flame retardancy, reduce smoke emission, and comply with stringent international safety standards. The consistent quality and particle size distribution of our product ensure optimal dispersion and maximum synergistic effect within your PVC matrix.

Sourcing Antimony Trioxide requires careful consideration due to market dynamics. As a dedicated manufacturer and supplier of chemical auxiliaries, we are committed to providing a stable and reliable supply of top-grade Antimony Trioxide. We offer competitive pricing and ensure that our product meets the demanding specifications required for effective flame retardancy in PVC applications. If you are looking to buy Antimony Trioxide to improve the fire safety of your PVC products, or require a detailed quote for our CAS 1309-64-4, we encourage you to reach out to our sales team. Partner with us for quality, reliability, and enhanced product safety.