| WHITENING AGENT | Approximate comp. |
| SiO2 | 3.01% |
| Al2O3 | 91.82% |
| Na2O | 1.36% |
| K2O | 0.13% |
| MgO | ‹ 0.01% |
| CaO | 0.04% |
| TiO2 | ‹ 0.01% |
| Fe2O3 | ‹ 0.01% |
| LOI | 3.37 % |
| Other | 0.26% |
| TOTAL | 100% |

| WHITENING AGENT | Approximate comp. |
| SiO2 | 3.01% |
| Al2O3 | 91.82% |
| Na2O | 1.36% |
| K2O | 0.13% |
| MgO | ‹ 0.01% |
| CaO | 0.04% |
| TiO2 | ‹ 0.01% |
| Fe2O3 | ‹ 0.01% |
| LOI | 3.37 % |
| Other | 0.26% |
| TOTAL | 100% |