Description
Chemical Composition
| Product Name | Zinc Borate | Formula | 2ZnO.3B2O3.3.5H2O |
| Product Model | ZB2335 | Primary Product Use | Flame Retardant and Smoke Suppressant |
| Technical Index | Standard Value | ||
| Appearance | White Powder | ||
| Whiteness % | ≥95.0 | ||
| Zinc Oxide (ZnO) % | 36.0~39.0 | ||
| Boron Oxide B2O3 % | 46.0~48.0 | ||
| Loss On Ignition % | 13.0~14.5 | ||
| Surface Water % | ≤0.5 | ||
| Particle Size D50 μm | 3~5 | ||
| Fineness (Residue on 200mesh Sieve) | ≤0.2 | ||
| Pb (ppm) | ≤20 | ||
| Cd (ppm) | ≤10 | ||
| Product Name | Zinc Borate | Formula | 2ZnO.3B2O3.3.5H2O |
| Product Model | ZB35U | Primary Product Use | Flame Retardant and Smoke Suppressant |
| Technical Index | Standard Value | ||
| Appearance | White Powder | ||
| Whiteness % | ≥95.0 | ||
| Zinc Oxide (ZnO) % | 36.5~39.5 | ||
| Boron Oxide B2O3 % | 46.5~49.0 | ||
| Loss On Ignition % | 13.5~15.0 | ||
| Surface Water % | ≤0.5 | ||
| Particle Size D50 μm | 5~8 | ||
| Fineness (Residue on 200mesh Sieve) | ≤0.2 | ||
| Pb (ppm) | ≤20 | ||
| Cd (ppm) | ≤10 | ||
Packaging & Storage
25 kg/bag, Palletized, 18 MT/20’GP
The product should be stored under dry and clean conditions in its original packing. the moisture may increase if not under dry condition. Guaranteed for 12 months from production date when stored under above storage conditions.
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Shipping Information
UN Number: 3077
UN Proper Shipping Name: Environmentally Hazardous Substance, Solid, N.O.S.
Transport Hazard Class (Es): 9
Packing Group: III
Environmental Hazards: Marine Pollutant
Harmonized Tariff Number: 2840.20
Product Advantage
- Flame Retardant in both halogen containing and halogen free systems
- Partial Replacement of Antimony Trioxide (Sb2o3)
- Smoke Suppressant
- Afterglow Suppressant
Safety and Handling Information
For specific safety, toxicity and handling information, please refer to material safety data sheet on this product.
Chemical Registration Numbers
CAS NO.: 12767-90-7/138265-88-0
EINECS NO.: 215-566-6
Recommend Application
The main applications include flexible PVC (cable materials, conveyor belting, floor tiles), silicones (insulator, coatings and wire insulations), polyamide.
Zinc borate, are used as fire retardant and smoke suppressant additives in polymers, plastics, and rubber applications.
Preservative for bio-composites: zinc borate is used to lend durability to these products, including oriented strand board (OSB), laminated strand lumber, oriented structural straw board, particle board, engineered bamboo scrimber and wood-plastic composites.


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