Table 4.
Hygroscopicity of powder materials at specific times.
| MC a (%) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 h | 0.25 h | 0.5 h | 1 h | 3 h | 8 h | 24 h | 72 h | 120 h | 168 h | 720 h | |
| CELLULOSES | |||||||||||
| Avicel® PH 101 | 2.9 | 4.6 | 4.5 | 5.1 | 5.6 | 5.7 | 5.7 | 5.7 | 5.8 | 6.2 | 7.3 |
| Methocel® E4M | 3.6 | 3.6 | 3.7 | 3.7 | 3.7 | 3.8 | 4.0 | 4.8 | 4.9 | 5.4 | 7.7 |
| Methocel® K100LV | 4.7 | 4.5 | 4.6 | 4.7 | 5.0 | 5.1 | 5.1 | 5.2 | 7.1 | 7.7 | 8.2 |
| SILICAS and SILICATES | |||||||||||
| Aerosil® 200 | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 | 1.9 | 1.9 | 2.4 | 2.4 | 2.7 | 3.0 |
| FujiSil® | 4.0 | 4.1 | 4.3 | 4.8 | 4.8 | 4.9 | 5.0 | 5.0 | 5.6 | 6.0 | 7.8 |
| Neusilin® NS2N | 6.6 | 7.0 | 7.7 | 7.7 | 7.8 | 7.9 | 8.4 | 8.5 | 8.9 | 9.5 | 9.8 |
| Neusilin® S2 | 7.2 | 7.4 | 7.7 | 7.7 | 7.9 | 8.5 | 8.6 | 8.6 | 9.2 | 9.2 | 11.2 |
| Neusilin® UFL2 | 8.2 | 8.2 | 8.4 | 8.5 | 8.5 | 8.6 | 9.0 | 9.3 | 10.7 | 12.6 | 13.8 |
| Neusilin® US2 | 4.6 | 8.1 | 8.5 | 8.7 | 8.9 | 8.9 | 9.2 | 9.4 | 9.6 | 10.6 | 14.9 |
| Sipernat® 22S | 5.3 | 5.5 | 5.6 | 5.6 | 5.7 | 5.9 | 6.0 | 6.5 | 5.6 | 7.2 | 7.5 |
| Syloid® 244FP | 3.6 | 4.2 | 4.2 | 4.3 | 4.7 | 4.8 | 4.9 | 5.0 | 5.0 | 5.5 | 8.6 |
| Syloid® XDP 3050 | 3.4 | 4.1 | 4.4 | 4.4 | 4.4 | 4.5 | 4.8 | 5.2 | 5.8 | 6.0 | 6.2 |
| CLAY MINERALS | |||||||||||
| Bentonite | 7.2 | 7.2 | 7.3 | 7.4 | 7.7 | 7.8 | 7.9 | 8.0 | 8.2 | 8.6 | 9.5 |
| Vermiculite | 4.5 | 4.5 | 4.6 | 4.8 | 4.9 | 4.9 | 4.9 | 5.3 | 5.4 | 5.4 | 4.9 |
a Moisture content.