zinc borate

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zinc borate
Posting date : Apr 15, 2010
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HS-CODE
29-
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Detailed Description
Item/Grade 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,% 13.515.5 Fineness (Residue on 45um sieve ), % ≤ 0.1 Specific gravity, g/cm3 2.67 Melting point 980 Temp. of dehydration > 320 Refractive index 1.58

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