Antimony Trioxide High Efficiency Flame Retardant Synergist for Cable & Polymer Compounds

Antimony Trioxide (Sb₂O₃) is a high-efficiency flame retardant synergist widely used in cable compounds, PVC, rubber, and coating systems. It enhances the effectiveness of halogen-containing flame retardants, providing superior flame resistance and thermal stability for polymer materials.

This high-purity white powder has an Sb₂O₃ content of 99.50%, with low levels of As₂O₃ (0.30%), PbO (0.10%), and trace metals, ensuring safety, consistency, and reliable performance. With a fine particle size of 2.5 µm, it disperses uniformly in polymers, contributing to stable mechanical and electrical properties in finished cable and insulation products.

Key product characteristics:

• High Sb₂O₃ content (99.50%) for effective flame retardancy
• Excellent thermal stability and dispersion in polymers
• Low impurities (As₂O₃, PbO, CuO, Fe₂O₃, Se)
• High whiteness (93%) for minimal impact on material color
• Suitable particle size (2.5 µm) for uniform distribution

Antimony Trioxide is especially suitable for wire and cable insulation and sheathing, providing reliable flame protection while maintaining processing efficiency and polymer integrity.

Packing: 25kg/bag (Blue glossy laminated woven bag)
Storage: Conventional storage
Shelf life: 2 years under proper storage conditions
Handling: Store in a cool, dry, and well-ventilated warehouse. Avoid moisture and direct sunlight. Keep the package tightly sealed after opening to prevent contamination.

1. High-Efficiency Flame Retardancy

Antimony Trioxide enhances the flame retardant efficiency of halogen-containing additives, allowing lower additive dosages while achieving superior fire protection.

2. Excellent Thermal Stability

It maintains polymer performance under high-temperature processing, reducing degradation and ensuring stable insulation and mechanical properties.

3. Uniform Dispersion

Fine particle size (2.5 µm) ensures even distribution in cable compounds, PVC, rubber, and coating materials, minimizing defects and maintaining consistent color and texture.

4. Low Impurities & High Whiteness

Low levels of As₂O₃, PbO, and trace metals ensure compliance with environmental and safety standards, while high whiteness (93%) minimizes color alteration in finished products.

5. Versatile Application

Suitable for wire and cable insulation, sheathing, PVC profiles, rubber products, and coatings requiring high flame resistance and long-term reliability.

1. Cable & Wire Compounds

• Insulation and sheathing for power, communication, and specialty cables

• Enhances flame retardancy while maintaining electrical properties

2. PVC & Rubber Products

• Profiles, sheets, and molded components

• Improves fire performance in indoor and outdoor polymer applications

3. Coatings & Polymer Systems

• Flame-retardant coatings for industrial and construction use

• Synergist in halogenated flame retardant formulations

Antimony Trioxide ensures enhanced fire protection, uniform dispersion, and stable performance for demanding polymer applications.

Maijisen is a technology-focused manufacturer of plastic processing additives, located in Kunshan City, Jiangsu Province. Established in 2009, Maijisen operates a domestic division in Kunshan and an international division in Shanghai, with 12,000㎡ production facilities and a 400㎡ R&D laboratory in Yancheng.

Our main products include Ca/Zn stabilizer, ACR processing aid, PVC processing aid, PVC foaming regulator, AC/NC foaming agent, lubricant and other innovative chemical additives. These products are widely used in PVC/WPC window profiles, foam boards, wall boards, WPC/SPC/LVT flooring, PVC pipes, cables, wires and footwear.

Guided by the philosophy of “Technology as the core, Quality as the root, Win-win cooperation,” Maijisen continuously develops new solutions through technical collaboration with research institutions. We warmly welcome your visit and long-term partnership.

Q1: What is the MOQ?

A: MOQ is about 1tons.

Q2: What if your payment term?

A: Payment terms: 100% by T/T ,30% by T/T and 70% by L/C.

Q3: What about the delivery ?

A: Delivery date: 10 days.

Q4: Can you supply free samples?

A: Of course, we can supply you 200g~500g per product.