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Antimony Trioxide

Type: Flame retardant

Development / Applications

Antimony trioxide is a highly effective flame retardant. Additionally, when used in conjunction with brominated, chlorinated, or borate compounds, it creates a synergistic effect, reducing flame time and ignition gas generation. When used for PVC-based cable sheathing, it can achieve the most demanding properties for low-voltage cables (up to 600 V) type THWN-2 according to NMX-J-010-ANCE, equivalent to the ANSI/UL 83 standard. In combination with commercially available borate compounds (such as zinc borate), it can reduce smoke and acid gas emissions and helps achieve a better LOI (Limiting Oxygen Index). It is a good additive for complying with UL 94.
Storage
This product should be stored at room temperature. Once opened, the packaging should be tightly closed.
The safety data sheet for handling this material is available upon request. Prolonged skin contact may cause irritation. Those handling this product should wear safety glasses and rubber gloves. In case of eye contact, rinse immediately with plenty of water. Exposed body parts should be washed with soap and water.
25 kg bags
Download technical data sheet
PHYSICAL PROPERTIESSPECIFICATION
AppearanceSolid
Particle size (µm)0.8–1.3
Specific Gravity5.5 Max.
Sieve residues <325 Mesh (%)≤ 0.10
TYPICAL COMPOSITION Sb₂O₃SPECIFICATION
Antimony Trioxide (%)≥ 99.8
Arsenic (%)≤ 0.10
Lead (%)≤ 0.10
Iron (%)≤ 0.004

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