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TEST ITEM | SPECIFICATION | TEST RESULT | |
Appearance | White crystal granule or powder | ||
Soluble | Colorless or slightly yellow, Almost Clear | ||
Smell | With the inherent special smell | ||
Assay (%) | ≥ 98 | 99.7 | |
Whiteness (%) | ≥ 75 | 79.8 | |
Loss on drying (%) | ≤ 0.5 | 0.15 | |
Reducing substances % | ≤ 0.5 | 0.24 | |
Chlorider ( Cl¯ )% | ≤ 0.05 | 0.02 | |
Sulphate % | ≤ 0.05 | 0.02 | |
PH Value ( 10% solution ) | 6.2 - 7.8 | 7.7 | |
Heavy metals ( pb ), mg/kg | ≤ 5 | < 4.5 | |
Arsenic mg/kg | ≤ 1 | < 1 | |







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