Customization: | Available |
---|---|
CAS No.: | 1303-96-4 |
Formula: | B4h20na2o17 |
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Colorless crystalline particles, odorless, salty taste. Melting point 75ºC. Weathering in dry air. Soluble in water, glycerin, insoluble in ethanol, aqueous solution is alkaline. pH9.5. Heating to 100ºC to lose 5 molecules of crystal water, 320ºC is completely lost water.
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 |
Sodium tetraborate has a wide range of applications in many fields. These include: