ATO Flame Retardant

As a classic halogen synergist, ATO flame retardant no longer merely functions by generating volatile antimony halides. Instead, its unique electronic structure efficiently catalyzes the electron transfer and energy dissipation processes of key free radicals (such as H· and OH·) in combustion chain reactions, thereby achieving more efficient and stable gas-phase flame retardation effects with lower addition levels.

Core Features

1. Ultra-high purity and precise physicochemical properties

- Main content Sb₂O₃ ≥ 99.8%, impurities As₂O₃ ≤ 0.06%, PbO ≤ 0.08%, effectively avoiding the risk of harmful substance migration

- Whiteness ≥97, average particle size 0.6-1.2μm, predominantly cubic crystal structure, excellent dispersibility, no effect on the natural color and processing performance of the substrate

- Density 5.2g/cm³, melting point 656°C, strong thermal stability, capable of withstanding high-temperature environments in various polymer material processing techniques

2. Efficient Synergistic Flame Retardant Mechanism

- It forms a strong synergistic effect with halogen-based flame retardants, generating antimony halides (such as SbCl₃) during combustion, which captures combustion free radicals in the gas phase and rapidly suppresses flame spread

- Promote the formation of a dense carbon layer on the substrate, block the transfer of heat and oxygen, and significantly reduce the material's burning rate and dripping risk

When used in combination with other halogen and phosphorus flame retardants, the flame retardant level can be increased by 1-2 levels, thereby reducing the amount of main flame retardant added

3. Global Environmental Compliance Certification

Fully compliant with the EU RoHS 2.0 (Directive 2011/65/EU) and REACH regulation's SVHC list of 250 substances, free from restricted materials such as lead, mercury, and cadmium

- Compliant with U.S. TSCA, California Proposition 65, and China GB 26572-2025 standards, suitable for strict regulatory scenarios such as electronic electrical products and children's goods

- Low-smoke and low-toxicity design, with no release of harmful gases during combustion, compliant with the EU EN 13501-1:2024 fire safety standard for smoke and toxicity

Application scenarios

Plastic and rubber industry

-Suitable for PVC, PP, PE, PS, ABS, PU, epoxy resin and other substrates, can be used for cable sheaths, plastic shells, pipes, films and other products

-Recommended addition amount is 5% -15% (adjusted according to the substrate and flame retardant grade), which does not affect the mechanical strength and processing flowability of the material

Electronic and electrical field

-Electronic device casings, circuit boards, connectors, and other components help products pass fire certifications such as UL 94 V0 and IEC 60695

-Flame retardant coating and insulation layer for wires and cables, meeting the high flame retardant requirements for building wiring and new energy vehicle wiring harnesses

Architecture and Building Materials

-Fireproof coatings, flame-retardant boards, insulation materials, etc., compatible with the EU CPR building product regulations and the US NFPA 285 standard

-Textile and leather flame retardant treatment, such as firefighting clothing, industrial protective fabrics, furniture leather, etc., to increase the material's ultimate oxygen index (LOI ≥ 30)

Other fields

-Ceramic glaze and pigment additives improve product heat resistance and stability

-Organic synthesis catalyst, suitable for optimizing specific chemical reaction processes

Frequently Asked Questions

Q1: Why invest in upgrading ATO products when halogen-free has become mainstream?

A1: This is a strategic issue. Halogen free is a long-term trend, but in some application fields where the comprehensive performance of materials (especially electrical performance, heat resistance, thin-walled flame retardancy) is extremely demanding, and halogen-free solutions cannot fully meet or the cost is too high, high-performance antimony halide systems will still be irreplaceable for a long time to come. The goal of ATO flame retardants is to serve these "critical applications" by improving efficiency, reducing usage, and enhancing environmental performance, making it a more responsible and sustainable technology choice, extending the vitality of classic technologies, and providing customers with valuable transformation time and reliable high-performance guarantees.

Q2: How does ATO flame retardant cope with the global environmental regulatory pressure on antimony?

A2: We adopt a 'proactive compliance' strategy. Firstly, by increasing efficiency and reducing quantity, the final usage of antimony in the product can be directly reduced. Secondly, we provide complete product life cycle assessment (LCA) data and detailed environmental, health, and safety (EHS) records to demonstrate that risks are controllable under reasonable use and control. Finally, we actively participate in the scientific risk assessment dialogue on antimony, using data to support reasonable risk-based regulation rather than a one size fits all ban.

Q3: Can this product be used for transparent or highly color demanding products?

A3: The standard ATO flame retardant is a white powder with a basic guarantee of color. For extremely high requirements, we can provide specialized models for high whiteness. For transparent products, traditional ATO cannot be used due to its refractive index and particle size limitations. ATO flame retardants can theoretically develop nano dispersed slurries for specific transparent resin systems through nanotechnology, but this requires customized development for specific resins, which is currently at the forefront of application exploration.

If you are looking for ATO flame retardants, antimony trioxide, and halogenated synergistic flame retardants, Taixing will be your good partner and we will offer the most favorable cooperation price!