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Zinic Borate for Flame-retardant
1. Basic indicators
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Molecular formula: |
2ZnO 3B2O3 3.5H2O |
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Cas No.: |
1332-07-6 |
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Appearance: |
White powder |
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H.S Code: |
2840200000 |
2. Technical specifications
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Item/Grade |
Zinc borate ( 2ZnO.3B2O3 3.5H2O) |
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|
Excellent grade |
First grade |
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|
Whiteness |
99 |
95 |
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Surface water % ≤ |
0.5 |
1.0 |
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Particle size, um |
3-5 |
3-5 |
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ZnO, % |
37.0-40.0 |
|
|
B2O3 , % |
45.0-48.0 |
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Loss on ignition,% |
13.5-15.5 |
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Fineness (Residue on 45um sieve ), % ≤ |
0.1 |
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Specific gravity, g/cm3 |
2.67 |
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Melting pointoC; |
980 |
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Temp. of dehydration oC> |
320 |
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Refractive index |
1.58 |
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3. Application
At present countries over the world get interest in 3.5 Water Zinc Borate, and is widely used to manufacture plastic, PVC, PE, PP, EVA, ABS, epoxide resin, unsaturation resin, phenolic resin, urethane foam. It is also used in rubber Industry such as neoprene, polybutadiene rubber, Buna-N rubber and paper, textile. In special plastic industry, it can replace diantimony trioxide and effectively prevent from smoke. It also can take the place of zinc chromate as primer, ceramics glaze, pesticide.
4. Packing and storage
Packing: Double coated plastic woven bag, 25kg net.
Storage: Dry, ventilated, moisture proof.
