Shandong Taixing Advanced Material Co., Ltd.
Shandong Taixing Advanced Material Co., Ltd.
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Why Is Antimony Trioxide Essential for Modern Industrial Applications?

2025-11-19

Antimony Trioxide plays a critical role in multiple industries, especially in flame-retardant formulations, plastics, rubber, paints, and glass manufacturing. Its stability, compatibility, and high effectiveness make it one of the most widely used flame-retardant synergists. As a professional supplier, Shandong Taixing Advanced Material Co., Ltd. offers high-purity Antimony Trioxide designed to meet strict global standards, ensuring consistent performance and reliable quality across various applications.

Antimony Trioxide


What Makes Antimony Trioxide a Key Functional Additive?

Antimony Trioxide is primarily used as a flame-retardant synergist, enhancing the fire-suppression capabilities of halogenated materials. It also acts as an opacifying agent in ceramics, a catalyst in PET production, and a clarifying agent in glass.

Main Functions

  • Enhances the flame-retardant efficiency of polymers

  • Improves resistance to heat and thermal degradation

  • Provides opacity for ceramic and glass industries

  • Acts as a catalyst in polyester resin production

  • Offers stable performance in a wide range of processing temperatures


How Does Antimony Trioxide Perform in Real Applications?

Its performance is highly dependent on purity level, particle size, and dispersion quality. High-grade material, such as that produced by Shandong Taixing Advanced Material Co., Ltd., ensures excellent flame-retardant synergy, uniform blending, and minimal impurity interference.

Usage Effects

  • Increased flame-retardant stability in plastics and rubbers

  • Improved brightness and opacity in ceramics and glass

  • Higher catalytic efficiency in polyester manufacturing

  • Better anti-yellowing performance in polymer processing


Why Are the Product Parameters of Antimony Trioxide So Important?

Accurate parameters determine how well the material integrates into different systems. For buyers, understanding technical specifications ensures proper selection based on industry requirements.


Antimony Trioxide Product Parameters (Technical Data)

Key Specifications

Parameter Specification
Sb₂O₃ Content ≥ 99.8%
Whiteness ≥ 98%
Moisture ≤ 0.10%
Oil Absorption 10–18 g/100g
Particle Size (D50) 0.8–1.0 μm
Sieve Residue (325 Mesh) ≤ 0.10%
pH Value 7–8
Conductivity ≤ 100 μS/cm
Package 25 kg bags / Jumbo bags

Additional Features

  • High purity suitable for electronics and flame-retardant compounds

  • Narrow particle size distribution for excellent dispersion

  • Low impurity levels to improve polymer stability

  • Custom packaging available upon request


Where Is Antimony Trioxide Most Commonly Applied?

Major Application Fields

  • Flame-retardant plastics (PVC, PE, PP, ABS)

  • Rubber and cable insulation

  • Textiles and coatings

  • Ceramic and enamel production

  • Glass manufacturing and clarification

  • PET and polyester production

  • Masterbatches and color concentrates


How Does Antimony Trioxide Improve Safety and Material Performance?

By forming char layers and releasing flame-suppressing radicals when exposed to high temperatures, Antimony Trioxide boosts the flame-retardant performance of halogen-containing polymers. This mechanism significantly slows flame spread and enhances overall fire safety.


Frequently Asked Questions About Antimony Trioxide

1. What is Antimony Trioxide mainly used for?

Antimony Trioxide is primarily used as a flame-retardant synergist in plastics, rubber, textiles, and coatings. It enhances the fire-resistance effect of halogenated flame-retardant systems and is also used as a catalyst, pigment, and opacifier in glass and ceramics.

2. How should Antimony Trioxide be added to flame-retardant formulations?

It is typically added at 2%–8% depending on the polymer type. Best results occur when dispersed uniformly, ensuring optimal synergy with halogenated flame-retardants.

3. What purity level is recommended for industrial plastics?

For most engineering plastics, a minimum Sb₂O₃ content of 99.5% is recommended. High-grade materials like those supplied by Shandong Taixing Advanced Material Co., Ltd. ensure improved stability and lower impurity interference.

4. Is Antimony Trioxide compatible with non-halogen systems?

While it is most effective with halogenated systems, it can also be used with certain phosphorus-based flame-retardants, depending on processing requirements.


How Can You Source High-Quality Antimony Trioxide?

Choosing a reliable manufacturer ensures product consistency, supply stability, and technical support. Shandong Taixing Advanced Material Co., Ltd. supplies high-purity Antimony Trioxide tailored for flame-retardant, catalyst, glass, and ceramic applications. Contact us.

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