Borax Pentahydrate
Borax Pentaydrate is white, crystalline solid. It has a higher boron content per unit mass and less hygroscopic compared to Borax Decahydrate.
- Other Names
- Borax 5 mol, Di sodium tetraborate pentahydrate
- Chemical Formula
- Na2B4O7.5H2O
- CAS No
- 12179-04-3
- Molar Mass
- 291.35 g/mol
| TEST | RESULT |
|---|---|
| Appearance | Colourless, White Crystalline Solid |
| Boron Content (As B2O3) | 48 % |
| Na2O | 21.25 % |
| Matter In soluble In Water | 1 % - max |
| Bulk Density (Loose) | 1.02 gm/cc |
| Particle Size | (+1.2 Mm 3% Max) (-0.075 Mm 5% Max) |
| Solubility In Water (At 100 °C) | 51.2 % |
| pH 0.1 % Solution (At 20 °C) | 9.3 |
| pH 1.0 % Solution (At 20 °C) | 9.2 |
Applications:
Borax Pentahydrate is widely used in ceramic industries to increase strength, scratch resistance of wall & floor tiles, table & sanitaryware, etc. It is also plays a important role in reducing melting temperature and improves the fit between the glaze & body in ceramic application.
It is used in glass making like fibreglass, textile fibreglass and borosilicate glasses.
It is used as a buffer agent, in welding flux in metallurgy and to control viscosity.
It is used as an anti-fungal compound and as an insecticide.
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