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ITEM | Decahydrate | Pentahydrate | Anhydrous | ||
Appearance | White Powder | ||||
Sodium Borate Assay, %≥ | 99.5 | 99.5 | 99.5 | ||
(Na2B4O7.10H2O) | (Na2B4O7.5H2O) | (Na2B4O7.H2O) | |||
B2O3, %≥ | 37-38 | 48.5 | 68 | ||
NaO2, %≥ | 16-17 | 21.5 | 30 | ||
Sodium carponate (Na2CO3) % ≤ | 0.1 | 0.1 | 0.1 | ||
Insoluble matter in water % ≤ | 0.04 | 0.04 | 0.04 | ||
Sodium Suitate (Na2SO4) % ≤ | 0.2 | 0.2 | 0.2 | ||
Sodium Chloride (NaCl) % ≤ | 0.03 | 0.03 | 0.03 | ||
Iron (Fe) % ≤ | 0.002 | 0.002 | 0.002 |