| Customization: | Available |
|---|---|
| Formula: | H3bo3 |
| EINECS: | 233-139-2 |
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| Item | Index | |
| First grade | Second grade | |
| Boric acid(%) | ≥99.5% | ≥96.5% |
| Water insolubles(%) | ≤0.05% | ≤0.15% |
| Sulfate(SO4)(%) | ≤0.10% | ≤0.40% |
| Chloride(CL)(%) | ≤0.01% | ≤0.05% |
| Iron(Fe)(%) | ≤0.003% | ≤0.005% |
In the production of advanced glass and glass fiber such as optical glass, acid-resistant glass, organic boron glass, it can improve the heat resistance and transparency of glass, increase mechanical strength, and shorten the melting time. For example, in the production of glass fiber, it can reduce the melting temperature and thus facilitate wire drawing. Generally speaking, B2O3 can reduce viscosity, control thermal expansion, prevent devitrification, improve chemical stability, and improve resistance to mechanical and thermal shock. In glass production, boric acid is often mixed with sodium borate (such as borax pentahydrate or anhydrous borax) to adjust the sodium-boron ratio in the glass. [6]
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