| Customization: | Available |
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| CAS No.: | 12767-90-7, 138265-88-0 |
| Formula: | 2ZnO. 3b2o3.3.5H2O |
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| Appearance | White fine powder |
| Whiteness | ≥98 |
| ZNO content % | 37-40 |
| B2O3 content% | 47-49 |
| Free water (H2O) % | ≤0.5 |
| Average particle size D50, um | 3-5 |
| Residue 45 um % | ≤0.1 |
| Decomposition°C | 320 |
| Melting point °C | 980 |
| Refractive index | 1.58 |
| Specific gravity, g/cm3 | 2.67 |
Zinc Borate is one environmental-friendly halogen-free flame retardant. There are some formulations of xZnO.yB2O3.zH2O, in which Zinc Borate with 3.5 hydrate is called ZB-2335(2ZnO.3B2O33.5H2O) is the most common used grade. It has owned some excellent properties on non-toxicity, slight solubility in water, good thermal stability, fine particle size, low specific gravity, great free-flowing etc.
1. Zinc borate can be used as multi-functional synergistic additives with antimony oxide or other halogenated flame retardants to significantly improve the flame retardant performance, remove smoke emission and adjust the balance on chemical, mechanical, electrical etc properties.
2. As environmental protection substitute to replace current Antimony Oxide or halogen flame retardants, Zinc borate is directly used in PVC, PE, Polyolefin, Epoxy Polyamide etc resins and rubber process. Moreover, it is widely used in textile, fiber, floor, leather, wall paper, carpet, paint etc decorative materials to improve flame retardant performance.
3. Based on its antistatic properties, zinc borate is widely used in mining plastic material, and used on anti-corrosion, infra red absorption, fungicide for wood preservation fields.
25kg paper bag, 1FCL=20mt with pallets
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