product name: fumed silica a-200
other name: white carbon black
molecular formula: sio2.x(h2o)
molecular weight (g/mol): 60.08
melting point ( °c): 1610
boiling point (°c): 100 min.
density (25 °c, g/cm3): 2.6
refractive index (n20 d): 1.544
specification:
testing item |
standard |
content (%) |
99.8 min. |
specific surface area (m2/g) |
176-225 |
ph |
3.6-4.5 |
burning loss weight (m/m, %) |
2.5 max. |
volatiles content (105 °c, %) |
3.0 max. |
appearance |
white solid colloidal micro-particle |
cas no.: 10279-57-9
einecs: 238-878-4
packages: 25kgs/drum, 25kgs/bag or as customized package.
usage: used as a paint coating filler.