Chemical properties (typical) Normal sulphate low sulphate Purity 99.90% min 99.90% min B2o3 56.25% min 56.25% min So4 500 ppm max 130 ppm max Physical properties Crystalline Molecular weight 61, 83 61, 83 Specific gravity 1, 435 gr/cm3 1, 435 gr/cm3 Bulk density 0, 8 gr/cm3 0, 8 gr/cm Fractions +1 mm 4%max +1 mm 4%max -0, 060 mm 4% max -0, 060 mm 5% max Powder Molecular weight 61, 81 Specific gravity 1, 435 gr/cm3 Bulk density 0, 7 gr/cm3 Fractions +1 mm 0% -0, 060 mm 30% min 25-50 kgs bags/big-bags
