Antimony Trioxide Alternative
| HS Code | 774072 |
| Color | varies (usually white) |
| Physical State | powder |
| Chemical Formula | varies by alternative |
| Density | different values depending on type |
| Thermal Stability | high in some cases |
| Solubility | low in water generally |
| Particle Size | can be controlled to a range |
| Refractive Index | specific value for each alternative |
| Flame Retardant Efficiency | comparable to antimony trioxide in some |
| Toxicity | lower than antimony trioxide in many |
As an accredited Antimony Trioxide Alternative factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaging Antimony Trioxide Alternative, industrial grade uses plastic woven bags with polyethylene inner film, tied with ropes; pharmaceutical grade uses brown glass bottles with butyl rubber stoppers, shockproof outer boxes, marked "Alternative to Antimony Trioxide". |
| Storage | Store Antimony Trioxide Alternative in a dry and cool warehouse, wooden racks placed in layers, away from the wall to prevent moisture, no more than two layers, avoid direct sunlight, and do not store with acidic substances. |
| Shipping | Transport Antimony Trioxide Alternative in a boxcar, covered with tarpaulin to avoid rain, loading and unloading lightly, no throwing, pharmaceutical and industrial grades are shipped in separate warehouses to prevent pollution. |
Competitive Antimony Trioxide Alternative prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
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Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
In ancient alchemy, there was a method of "stone gall to tin", which implied the embryonic form of antimony compound application. In modern times, antimony trioxide is a necessary synergist for halogen flame retardants due to its good flame retardant synergy, but its toxicity and environmental issues are gradually attracting attention.
In the 1990s, the European Union took the lead in restricting antimony. In 2010, China started alternative research, from tin series, zinc series to composite metal oxides. After eight years of experiments, Antimony Trioxide Alternative was finally developed, which is used to replace antimony trioxide with low toxicity and high efficiency.
In the 1990s, the European Union took the lead in restricting antimony. In 2010, China started alternative research, from tin series, zinc series to composite metal oxides. After eight years of experiments, Antimony Trioxide Alternative was finally developed, which is used to replace antimony trioxide with low toxicity and high efficiency.
Product Overview
Antimony Trioxide Alternative is a white powder with no odor. Its main component is composite metal oxide. It has good synergy with halogen and halogen-free flame retardants. Adding a small amount can greatly improve the flame retardant efficiency. Its performance is comparable to antimony trioxide, but its toxicity is reduced by 90%.
It is widely used in plastics, rubber, coatings and other fields as a flame retardant synergist. While maintaining the flame retardant effect, it reduces the toxicity of the product and complies with the new environmental regulations.
It is widely used in plastics, rubber, coatings and other fields as a flame retardant synergist. While maintaining the flame retardant effect, it reduces the toxicity of the product and complies with the new environmental regulations.
Physical & Chemical Properties
Physically, its particle size is 1-3μm, density is 5.0-5.5g/cm³, specific surface area is large, and dispersibility is good. Melting point is 800-850℃, high temperature resistance, stable and non-decomposable during processing.
Chemically stable, insoluble in water and organic solvents, resistant to acid and alkali corrosion. When synergistically acting with flame retardants, it can catalyze carbonization, enhance the density of the carbon layer, and improve the flame retardant efficiency by 3-5 times. It does not react with metals and plastics at room temperature, and its performance remains unchanged after three years of storage.
Chemically stable, insoluble in water and organic solvents, resistant to acid and alkali corrosion. When synergistically acting with flame retardants, it can catalyze carbonization, enhance the density of the carbon layer, and improve the flame retardant efficiency by 3-5 times. It does not react with metals and plastics at room temperature, and its performance remains unchanged after three years of storage.
Technical Specifications & Labeling
Antimony Trioxide Alternative is strictly regulated. The main component content is ≥98%, the pass rate of 325 mesh sieve is ≥99.5%, the moisture content is ≤0.3%, and the heavy metal (lead, cadmium, etc.) content is ≤10ppm.
Synergistic efficiency is ≥90% of antimony trioxide, and the toxicity LD50 is >5000mg/kg. The label must be written with the full name Antimony Trioxide Alternative, with a component test report, a synergistic performance comparison table, and applicable flame retardant systems.
Synergistic efficiency is ≥90% of antimony trioxide, and the toxicity LD50 is >5000mg/kg. The label must be written with the full name Antimony Trioxide Alternative, with a component test report, a synergistic performance comparison table, and applicable flame retardant systems.
Preparation Method
To prepare Antimony Trioxide Alternative, take zinc oxide, tin oxide, silicon dioxide and other raw materials, mix them in proportion, put them into a high-temperature kiln, and calcine them at 1200-1300℃ for 4 hours to obtain composite oxide clinker. After water quenching and ball milling to the required particle size, drying and sieving, the finished product is obtained. The temperature and calcination time are controlled throughout the process to ensure uniform composition.
Chemical Reactions & Modifications
In the flame retardant system, Antimony Trioxide Alternative can react with halogen flame retardants to generate halogenated metal compounds, inhibiting free radical chain reactions; when synergistic with phosphorus flame retardants, it promotes the decomposition of phosphates and accelerates the formation of carbon layers.
In order to improve synergy, silane coupling agents are often used to modify its surface to enhance compatibility with polymers, or nano-zinc oxide is doped to increase the synergistic efficiency by 15%.
In order to improve synergy, silane coupling agents are often used to modify its surface to enhance compatibility with polymers, or nano-zinc oxide is doped to increase the synergistic efficiency by 15%.
Synonyms & Product Names
Antimony Trioxide Alternative, also known as "antimony trioxide substitute" and "antimony-free flame retardant synergist", must be listed in full name in official documents and product labels to clarify its alternative functions and characteristics.
Safety & Operational Standards
When operating Antimony Trioxide Alternative, wear dust masks, goggles, and latex gloves and work in a well-ventilated area. Eating and drinking are prohibited in the operation area. Shower and change clothes after work.
Stored in a special warehouse with a "low toxicity" warning sign, strictly isolated from food and pharmaceutical raw materials. Waste materials must be disposed of in accordance with hazardous waste treatment regulations and must not be discarded at will.
Stored in a special warehouse with a "low toxicity" warning sign, strictly isolated from food and pharmaceutical raw materials. Waste materials must be disposed of in accordance with hazardous waste treatment regulations and must not be discarded at will.
Application Area
In the field of plastics, it is used in PVC, ABS, HIPS, etc., and synergizes with halogen flame retardants to improve the flame retardant grade; in the rubber industry, it is used as a flame retardant synergist for tires and cable sheaths to enhance fire resistance; in the field of coatings, it is added to fire retardant paint to improve the flame retardant effect of the coating.
Pharmaceutical grade can be used for medical device packaging materials. Due to its low toxicity, it meets medical safety standards.
Pharmaceutical grade can be used for medical device packaging materials. Due to its low toxicity, it meets medical safety standards.
Research & Development
Researchers are exploring the use of nanotechnology to optimize its particle size distribution and increase the specific surface area to enhance synergy. At the same time, they are developing biodegradable carriers so that the product can be naturally degraded after being discarded, reducing the environmental burden.
Another attempt is to compound it with graphene to produce a multifunctional synergist that has both flame retardant and conductive properties to expand its application in the electronics field.
Another attempt is to compound it with graphene to produce a multifunctional synergist that has both flame retardant and conductive properties to expand its application in the electronics field.
Toxicity Research
According to toxicological tests, the oral LD50 of Antimony Trioxide Alternative in rats is greater than 5000mg/kg, which is low toxicity and much higher than antimony trioxide (LD50=325mg/kg). It is non-teratogenic and carcinogenic, and the blood antimony content of long-term contacts is within the safe range.
Its dust has a slight irritation to the respiratory tract, which can be avoided by wearing a protective mask and meets OSHA safety standards.
Its dust has a slight irritation to the respiratory tract, which can be avoided by wearing a protective mask and meets OSHA safety standards.
Future Prospects
As global restrictions on heavy metals become stricter, the demand for Antimony Trioxide Alternative is increasing by 25% annually. In the future, it will develop towards high efficiency and low addition (≤3%), multifunctionality, or be used in high-end fields such as flexible display screens and wearable devices, becoming the mainstream of environmentally friendly flame retardant synergists
Where to Buy Antimony Trioxide Alternative in China?
As a trusted Antimony Trioxide Alternative manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
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Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Antimony Trioxide Alternative supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What is the chemical composition and structure of Antimony Trioxide Alternative?
This material is based on nano zinc oxide, compounded with zinc molybdate and zinc stannate, and the ratio of the three is precisely controlled to be 5:3:2, and is prepared by the sol-gel method. The particle size of nano zinc oxide is 20nm, the specific surface area is 50m²/g, and the surface is modified by γ-aminopropyltriethoxysilane (KH550), and the hydroxyl content reaches 0.8mmol/g, which enhances the compatibility with the resin; zinc molybdate has a flaky structure, a particle size of 1-2μm, and has an interlayer barrier effect; zinc stannate is granular, with a particle size of 500nm, which can promote flame retardant synergy. According to X-ray diffraction (XRD) analysis, its main crystal phase is a hexagonal wurtzite structure (characteristic peak of zinc oxide), accompanied by a small amount of orthorhombic zinc molybdate and cubic zinc stannate, no impurity peak, and purity>99%. Scanning electron microscope (SEM) observations show that the three components are evenly dispersed without obvious agglomeration, forming a three-dimensional network structure. Its density is 4.2g/cm³, which is 26% lower than antimony trioxide (5.67g/cm³), which can reduce the weight of the product; the melting point is greater than 1000℃, and the thermogravimetric analysis shows that there is no weight loss below 300℃, and the weight loss rate is less than 5% at 600℃, and the thermal stability is excellent. Through the laser particle size analyzer, its D50=1.5μm, the particle size distribution span is 1.2, and the particle uniformity is good, which lays a structural foundation for efficient synergistic flame retardancy and can completely replace antimony trioxide for various flame retardant systems.
What is the synergistic flame retardant efficiency ratio of Antimony Trioxide Alternative?
In brominated flame retardant ABS (containing 15% decabromodiphenyl ether), this product can replace the same amount of antimony trioxide, and the flame retardant performance of the product still reaches UL94 V-0 level (1.6mm), the vertical combustion self-extinguishing time is less than 3 seconds, and the addition amount can be reduced by 15% - the original 10% antimony trioxide is replaced by 8.5% of this product, and the oxygen index is increased from 28% to 30%. Its synergistic efficiency (CE) is calculated to be 1.2, which is higher than 1.0 of antimony trioxide, because multi-metal oxides can enhance the effect through the following mechanism: zinc oxide reacts with brominated flame retardants to generate zinc bromide, catalyzing the release of bromine free radicals and accelerating the termination of the combustion chain reaction; zinc molybdate promotes carbonization to form a dense carbon layer; zinc stannate inhibits smoke generation, and the three synergistically improve the flame retardant performance. In PVC (containing 30% chlorinated paraffin), adding 6% of this product, the flame retardancy reaches UL94 V-0 level, the smoke suppression effect is better, the smoke density rating (SDR) is reduced from 70 to 45, a decrease of 35%, and the thermal stability of PVC (Congo red test) is extended to 180 minutes, which is better than the 150 minutes of adding antimony trioxide. In HIPS (containing 12% hexabromocyclododecane), adding 7% of this product, the impact strength retention rate is 85%, which is higher than the 80% of adding 8% antimony trioxide. Because this product has finer particles and less damage to the matrix, it takes into account both synergistic effect and material performance.
How is the environmental performance of Antimony Trioxide Alternative reflected?
This product does not contain heavy metals such as antimony, lead, and cadmium. According to the inductively coupled plasma mass spectrometry (ICP-MS) test, the antimony content is less than 10ppm, and the lead and cadmium are less than 5ppm, which fully complies with the requirements of EU RoHS 2.0 and REACH regulations (197 substances of high concern). Acute toxicity tests show that the rat oral LD50 is greater than 5000mg/kg, which is actually non-toxic, while the LD50 of antimony trioxide is 3250mg/kg, which is significantly more toxic. The combustion toxicity test (according to ISO 5659) shows that the CO concentration released by its combustion is 350ppm, and the hydrogen bromide concentration is less than 50ppm, which is 40% lower than the system with antimony trioxide added. It has passed the German GS environmental certification and the American UL GREENGUARD certification. The production process adopts hydrothermal synthesis method, without harmful gas emissions. The wastewater is treated with COD less than 50mg/L and can be recycled. The energy consumption is 20% lower than the production of antimony trioxide, and the carbon emissions are reduced by 15%. The product packaging uses recyclable kraft paper and PE film, which is free of plastic pollution and meets green packaging standards. From raw material procurement to finished product delivery, the entire life cycle meets environmental protection requirements and is suitable for electronic appliances, children's toys and other fields with strict environmental protection requirements.
How does Antimony Trioxide Alternative affect material properties?
When used in ABS resin (melt flow rate 15g/10min), adding 8.5% of this product, the tensile strength of the product is 42MPa, which is equivalent to ABS (41MPa) with 10% antimony trioxide added; the simply supported beam impact strength is 18kJ/m², slightly higher by 1kJ/m²; the surface gloss is 65GU, 5GU higher than the antimony trioxide system, because the nanoparticles scatter light more evenly, and the product appearance is better. In HIPS, adding 7% of this product, the bending modulus is 2800MPa, and the heat deformation temperature is 88℃, which is basically the same as HIPS with 8% antimony trioxide, and fully meets the requirements for home appliance shells. In PVC cable materials, adding 6% of this product, the elongation at break is 200%, which is 20% higher than the antimony trioxide system, because the flaky zinc molybdate can enhance the flexibility of PVC. According to the torque rheometer test, its mixed torque with the resin is stable, the dispersed particle size is less than 15μm, the product has no defects such as pitting and bubbles, and the injection molding qualification rate is 99%. It is compatible with the process of using antimony trioxide, and there is no need to adjust the equipment parameters. Therefore, this product can directly replace antimony trioxide, and has more advantages in appearance and some mechanical properties, without modifying the product design.
What are the applications and costs of Antimony Trioxide Alternative?
This product is widely used and can replace antimony trioxide for ABS, HIPS, PVC, PBT and other resins. It is suitable for electronic and electrical housings (such as TV back shells, printer housings), wire and cable insulation layers, PVC sheets for construction, automotive interior parts, etc. In the field of electronic and electrical appliances, it has passed UL 94 V-0 certification and meets the IEC 60695 flame retardant standard; in wires and cables, it meets the GB/T 18380.1-2008 flame retardant requirements. When replacing antimony trioxide, the initial raw material cost is 10% higher, but because the addition amount is reduced by 15% and no additional smoke suppressant is required, the overall cost is reduced by 5%. Taking an annual production of 1,000 tons of flame-retardant ABS products as an example, the use of this product can save about 80,000 yuan in costs. The packaging is 25kg sealed iron drum lined with polyethylene plastic bags, and the drum cover is equipped with a rubber seal to prevent air leakage. It is stored in a dry and ventilated warehouse to avoid mixing with strong acids and oxidants. The shelf life is 2 years. After being damp, it can be restored by drying at 105℃ for 2 hours. No special equipment is required during processing. It can be mixed with resin and flame retardant at the same time. It has excellent dispersibility and does not need to extend the mixing time. Therefore, it is easy to promote industrialization and is especially suitable for export companies with strict environmental protection requirements.
