Grade |
Premium grade |
First grade |
Qualified grade |
Color grade |
Purity% ≧ |
99.0 |
98.5 |
96.0 |
99.0 |
Chloride %≦ |
0.01 |
0.1 |
0.20 |
0.03 |
Sulphate% ≦ |
0.01 |
0.1 |
0.15 |
0.04 |
Fe% ≦ |
0.001 |
0.003 |
0.010 |
0.001 |
Water insoluble% ≦ |
0.02 |
0.05 |
0.10 |
0.04 |
Loss after Burning% ≦ |
0.60 |
1.00 |
1.00 |
0.80 |
3.PackagingPackaging Details: 25kg pp woven bag or according to customer’s requirement4. Function & ApplicationMainly used in the manufacturing of optical glasses, electronic tubes, fertilizers, decarbonizers, pharmaceuticals, agricultural chemical, inorganic dyes and pigments.