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Grado | ST-200 | ST-380 | ST-139 | ST-152 | ST-615 | ST-630 | |||||
Forma | Blanco polvo amorfo | ||||||||||
Superficie (m2/g) | 200 ± 20 | 380 ± 30 | 110 ± 30 | 170 ± 30 | 140 ± 20 | 330 ± 30 | |||||
El valor de PH | 3,9-4,5 | 3,7-4,5 | 4,0-7,0 | ≥ 3,7 | 5,0-8,0 | 6,0-9,0 | |||||
Pérdida por desecación (2h 105 ℃) % | ≤ 2,0 | ≤ 2,5 | ≤ 0,7 | ≤ 0,7 | ≤ 0,7 | ≤ 0,7 | |||||
Pérdida en el encendido (2h,1000 ℃) % | ≤ 2,0 | ≤ 2,5 | ≤ 10 | ≤ 2,5 | ≤ 4,0 | ≤ 5,0 | |||||
Contenido de sílice (%) | ≥ 99,8 | ||||||||||
Densidad apilada (g/dm²) | 40-60 | 40-60 | 40-60 | 40-60 | 40-60 | 40-60 | |||||
Tratamiento de superficie | No | No | PDMS | DDS | HMDS | HMDS |
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