Loading Port:Tianjin Port
Payment Terms:TT or LC
Min Order Qty:20MT m.t.
Supply Capability:120000MT m.t./month
Introduction of Qualified Zinc Borate:
The Qualified Zinc Borate is inorganic addition flame retardant. Its characteristics are that it has good hot stability, and not only stops buring and vanishes smokings but also be used with other inorganic flame retardant. It is used in epoxy resin, unsaturated polyester, polyurethane, etc. And it is widely used in rubber, plastic, cable, wood,etc.
Specifications of Qualified Zinc Borate:
Item/Grade | Zinc borate ( 2ZnO.3B2O3 3.5H2O) | |
Excellent grade | First grade | |
Whiteness | 99 | 95 |
Surface water%≤ | 0.5 | 1.0 |
Particle size, um | 3-5 | 3-5 |
ZnO, % | 37.0-40.0 | |
B2O3 , % | 45.0-48.0 | |
Loss on ignition,% | 13.5-15.5 | |
Fineness (Residue on 45um sieve ), % ≤ | 0.1 | |
Specific gravity, g/cm3 | 2.67 | |
Melting pointoC; | 980 | |
Temp. of dehydrationoC> | 320 | |
Refractive index | 1.58 | |
