Inspection Items | Unit | F ine Grade | Technical Grade | F irst Grade | R egular Grade |
Purity | % ≥ | 99.0 | 99.0 | 98.5 | 96.0 |
Chloride ( A s KC l) | % ≤ | 0.01 | 0.03 | 0.10 | 0.20 |
Sulphate ( A s K 2 SO 4 ) | % ≤ | 0.01 | 0.04 | 0.10 | 0.15 |
Iron | % ≤ | 0.001 | 0.001 | 0.003 | 0.010 |
Water- Insoluble s | % ≤ | 0.02 | 0.04 | 0.05 | 0.10 |
Ash Content | % ≤ | 0.6 | 0.8 | 1.00 | 1.00 |
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