Silica 325
Silica 325 is a processed mineral primarily composed of quartz. It is the most common source of silica in clay bodies and glazes, serving as the primary glass former. In glazes, it decreases thermal expansion and can raise the melting point.
- Material class: silica
- Glaze role: glass_former
- CAS number: 7631-86-9
Oxide Analysis (wt%)
| Oxide | wt% |
|---|---|
| SiO₂ | 99.61 |
| Al₂O₃ | 0.22 |
| Fe₂O₃ | 0.02 |