Unwashed Wood Ash
Unwashed Wood Ash is a processed material primarily composed of calcium oxide. It is used in ceramic glazes for its fluxing properties. Due to its high thermal expansion, it should be used sparingly to avoid crazing on stoneware.
- Material class: plant_ash
- Glaze role: flux
Oxide Analysis (wt%)
| Oxide | wt% |
|---|---|
| CaO | 54.14 |
| LOI | 25.70 |
| K₂O | 9.01 |
| MgO | 4.20 |
| P₂O₅ | 3.43 |
| SiO₂ | 2.06 |
| Na₂O | 1.45 |