Batch | E | Sodium silicate glass [21] |
Opal in g | 6.25 |
|
Dissolved at (in ˚C) | 160 | 140 |
Dissolution time in h | 6 | 5 |
Na2O in wt. % | 7.56 | 8.0 |
Nonalkaline oxides in wt. % | 25.41 | 25.2 (SiO2) |
Rm | 3.47 | 3.21 |
Viscosity in mPa×s | 29.3 ± 0.5 (20.9˚C) | 21 |
Refractive index | 1.3867 ± 0.0003 (21.7˚C) | 1.387 |
Density in g∙cm−3 | 1.325 ± 0.0013 (21.1˚C) | 1.327 |