Shandong Taixing Advanced Material Co., Ltd.
Shandong Taixing Advanced Material Co., Ltd.
Products
Antimony Trioxide
  • Antimony TrioxideAntimony Trioxide
  • Antimony TrioxideAntimony Trioxide
  • Antimony TrioxideAntimony Trioxide
  • Antimony TrioxideAntimony Trioxide

Antimony Trioxide

If you are looking to purchase high-purity Antimony Trioxide, you can choose Taixing as your supplier. This flame-retardant material is suitable for use as an additive in PVC and other substrates. It features controllable particle size, good dispersibility, and excellent thermal stability.
CAS No.: 1309-64-4
Chemical Formula: Sb₂O₃

Taixing's antimony trioxide products can meet the specific needs of various industries. Whether for plastics, rubber, textiles, or coatings, our products provide customers with reliable and efficient flame retardant solutions.


Flame Retardant Principle

Antimony trioxide (ATO) is an additive flame retardant. In the early stages of combustion, it first melts and forms a dense protective film on the surface of the material. The film can isolate air from entering in a short time and slow down the contact between oxygen and combustible substrate, so ATO can inhibit the spread of combustion in the early stage. At the same time, it absorbs a significant amount of heat during melting and subsequent reactions, lowering the overall system temperature and delaying the thermal decomposition of the material and the generation of combustible gases.

As the temperature rises further, antimony trioxide begins to vaporize and enter the gas phase. In the gas phase, it weakens the duration of combustion by diluting the concentration of available oxygen in the air and interfering with the free radical reaction chain in the flame zone.


Physical and Chemical Properties

Items Unit

Sb2O3 % ≥99.80 ≥99.50
As2O3 % ≤0.05 ≤0.06
PbO % ≤0.08 ≤0.10
Fe2O3 % ≤0.005 ≤0.006
CuO % ≤0.002 ≤0.002
Se % ≤0.004 ≤0.005
Whiteness % ≥95 ≥93
Particle size , D50 μm 0.5-1.3 0.5-1.3


Core Advantages

● ATO is a flame retardant synergist that provides excellent synergistic flame retardant effects, significantly increasing the flame retardant efficiency of halogenated flame retardants while reducing dosage.

● This material has a melting point of approximately 656°C, a stable chemical structure, and high thermal stability. This allows it to withstand the harsh conditions of polymer processing and only begins to function in fires where flame retardancy is truly required, without premature decomposition.

● Taixing also ensures high purity and controllable particle size of antimony trioxide, which better controls smoke and residue generation without interfering with the flame retardant effect. You can contact us to precisely adjust and control the particle size according to your specific needs. Smaller particle size can bring a larger contact area and better dispersibility. It depends on the actual situation of the polymer substrate.

● Our products have excellent dispersibility, avoiding the formation of localized areas of flame retardant enrichment or depletion. This is also important for the aesthetics and mechanical properties of the added plastics/rubber.


Application

Antimony trioxide is widely used in the following fields:

● Plastic industry

● Rubber industry

● Textile products

● Coatings and paints

● Electronic and Electrical


Packaging: Net weight 25kg/bag, Compound paper-plastic bag

Storage and Attention: Keep in dry, room temperature and moisture proof condition, preventing the heating.


Antimony Trioxide ATO Antimony Trioxide ATO Antimony Trioxide ATO



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