Molecular formula: 2ZnO•3B2O3•3.5H2O
Molecular Weight: 435.4
Characteristics:
Zinc borate is an environmental-friendly and halogen-free flame retardant. 2ZnO•3B2O3•3.5H2O is the most common one among all formulations of zinc borate. It has some excellent properties on non-toxicity, slight solubility in water, good thermal stability, fine particle size, low specific gravity, great free-flowing etc.
Specification:
| Item |
Standard |
| Appearance |
white powder |
| Boric oxide B2O3 |
45-48 |
| Zinc oxideZnO |
37-40 |
| Ignition loss |
13.5-15.5 |
| Free water |
≤1 |
| Relative density |
2.69 |
| Whiteness |
95-99 |
| Refractive index |
1.58-1.59 |
| Medium grain size |
2-5μm |
Packing:
In 25kg bag with plastic inner.
Use:
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.
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.
Base on its chemical properties, zinc borate is also used on anti-corrosion, infra red absorption, fungicide for wood preservation etc fields.
MSDS: Available when required.
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