High purity Antimony Trioxide

High purity antimony trioxide (Sb₂O₃) CAS No. 1309-64-4, through purification and crystallization processes based on semiconductor industry standards, the purity of antimony trioxide has been increased to 99.9% or above, transforming it from a universal chemical raw material into an "electronic grade flame retardant synergistic reference material" that can be accurately predicted and has the best intrinsic performance. It is designed for high-end applications with unacceptable performance fluctuations, extreme requirements for color, electrical performance, and long-term aging stability.

Core strengths

1. Ultra pure quality and precise physical and chemical control

-The main content of Sb₂O₃ is ≥ 99.995%, and the key impurity As₂O₃ is ≤ 0.008% PbO≤0.01%， Far superior to industry standards, completely eliminating the risk of harmful substance migration and adapting to electronic grade application scenarios.

-Whiteness ≥ 99.2, average particle size can be customized to 0.3-5 μ m (optional at the nanometer level of 50-200nm), cubic crystal proportion ≥ 98.5%, excellent dispersibility, and does not affect the substrate's natural color, transparency, and processing performance.

-Density of 5.2g/cm ³, melting point of 656 ℃, extremely strong thermal stability, able to withstand high processing temperatures of polymer materials above 300 ℃ without decomposition or weight loss, suitable for various processes such as extrusion, injection molding, and vapor deposition.

-Adopting vacuum freeze-drying technology, the moisture content is ≤ 0.08%, the flowability is 40% better than ordinary products, and there is no risk of clumping during long-term storage. The deviation of physical and chemical indicators between batches is ≤± 0.05%.

2. Innovative processes and collaborative strengthening of functions

-Adopting the composite process of "oxygen enriched top blowing oxidation+vacuum distillation purification", the spray gun has no direct contact with the antimony melt, avoiding impurities from entering. The production efficiency is 4-8 times higher than traditional processes, and the product purity and consistency are industry-leading.

-The surface is double coated with γ - aminopropyltriethoxysilane (KH-550) and phosphorus nitrogen composite modifier, which improves compatibility with polymers such as PP, PVC, PET by 60%, completely solving the problem of agglomeration of nanoscale products.

-The synergistic effect with halogenated and halogen-free phosphorus nitrogen flame retardants is significant, rapidly generating antimony halide gas-phase flame retardant layer and dense carbon layer during combustion. The flame retardant level can be upgraded from V2 level to V0 level, with a limit oxygen index (LOI) ≥ 36, smoke density level (SDR) ≤ 50, and a 62% reduction in toxic smoke release.

-The nanoscale specification combines efficient catalytic performance and can replace antimony acetate as a polyester polycondensation catalyst. The dosage is only 50% of traditional catalysts, and the catalytic efficiency is improved by 10-15%, significantly reducing production costs.

Application scenarios

In the field of electronics and semiconductors

-Applications: Semiconductor packaging materials, photovoltaic glass clarifying agents, ATO (antimony doped tin oxide) raw materials, transparent electrode precursors for liquid crystal displays

-Advantages: Electronic grade purity to avoid impurities interfering with chip performance. As the core raw material of ATO, it can improve the visible light transmittance of transparent electrodes to over 85%, which is suitable for the technical needs of 5G base stations and photovoltaic industries

-Recommended dosage: 2% -6% (packaging material)/10% -20% (ATO preparation)

High end flame retardant field

-Application: High voltage wiring harness for new energy vehicles, AI server cabinets, high-end home appliance casings, fire-resistant coatings

-Advantages: The synergistic flame retardant system can reduce the amount of main flame retardant added by 25% -35%, without affecting the mechanical properties of the material, and help the product pass UL 94 V0 level and IEC 60695 fire certification

-Recommended dosage: 5% -12% (electronic casing)/8% -18% (fireproof coating)

Catalysis and Chemical Industry

-Application: Polyester (PET) condensation catalyst, organic synthesis catalyst, high-end ceramic glaze additive

-Advantages: Replacing traditional antimony acetate catalysts, reducing dosage by 50%, improving the polymerization degree and stability of polyester products, and improving heat resistance and glossiness in ceramic glazes

-Recommended dosage: 0.1% -0.5% (catalytic field)/1% -3% (ceramic glaze)

new energy sector

-Application: precursor of positive electrode material for sodium ion batteries, flame retardant shell for energy storage devices, interior materials for new energy vehicles

-Advantages: Excellent electrochemical stability, can improve battery cycle life, flame retardant performance meets the safety requirements of high-energy density battery scenarios

-Recommended dosage: 3% -8% (battery materials)/6% -12% (flame retardant components)

Frequently Asked Questions

Q1: Can the performance improvement brought by 99.9% purity offset the significant increase in cost?

A1: This depends on the value density and risk cost of the application. In general bulk products, it may not be economical. But in our target applications (high-end electronics, precision components), performance improvement directly translates into: higher product reliability (reducing on-site failures), stricter specification pass rates (improving yield), stronger brand premium capabilities (aesthetics and durability), and longer product lifecycle (more durable compliance). The cost of a product recall or brand reputation loss caused by an implicit material defect far exceeds the difference in material costs.

Q2: Does such high purity mean that the amount used in the formula can be reduced?

A2: When achieving the same key performance indicators (such as CTI value, color stability, and performance after aging), reduction can usually be achieved. Because the negative effects caused by impurities are eliminated, the action of active ingredients is more direct.

If you are looking for high-purity antimony trioxide or electronic grade antimony trioxide, Taixing will be your best partner and we will offer the most favorable cooperation price!