Details
Bentonite is a clay-like material derived of montmorlinite. Betonite is typically used as either a suspension agent in glazes and plasticizer in clay bodies. A noticable difference in plasticity can be seen with additions as low as 1% and is typically used up to 5% in recipes. Bentonite HPM-20 differs from standard bentonite in that it is a highly refined material which eliminates iron spotting which can occur. Works well for porcelains and clear or white glazes where these qualities are desired.
Digitalfire.com
| Oxide | Analysis | Formula |
| CaO | 1.00% | 0.14 |
| MgO | 2.00% | 0.39 |
| K2O | 1.00% | 0.08 |
| Na2O | 3.00% | 0.38 |
| Al2O3 | 20.00% | 1.55 |
| SiO2 | 59.00% | 7.76 |
| Fe2O3 | 3.50% | 0.17 |
| LOI | 10.00 |
