Details
Pyrotrol 2253. A refractory material typically added to clay bodies to reduce thermal expansion/thermal shock as with grog. Possibly a cheaper substitute for alumina in kiln wash recipes.
From Digitalfire.com
PCE: 26
| Oxide | Analysis | Formula |
| K2O | 0.40% | 0.021 |
| Na2O | 0.40% | 0.032 |
| TiO2 | 0.40% | 0.025 |
| Al2O3 | 20.50% | 1.00 |
| SiO2 | 75.50% | 6.25 |
| Fe2O3 | 0.40% | 0.012 |
| LOI | 2.80 |
