Borax Specification:
ITEM | Specification | ||||
Decahydrate | Pentahydrate | Anhydrous | |||
Appearance | White Powder | ||||
Molecular Weight | 381.37 | 291.29 | 201.22 | ||
Sodium Borate Assay, %⥠| 95; 99.5 (Na2B4O7.10H2O) | 99.5 (Na2B4O7.5H2O) | 95; 99.5 (Na2B4O7) | ||
B2O3, %⥠| 37-38 | 48.5 | 68.0 | ||
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 |