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Hydrophilic fumed silica


AEROSIL® fumed silica—product groups


Physico-chemical data of hydrophilic fumed silica
Grades
BET surface area [m2/g]
Loss on drying [%]
pH value
AEROSIL® 90
90 ± 15
≤ 1.0
3.7‑4.7
AEROSIL® 130
130 ± 25
≤ 1.5
3.7‑4.5
AEROSIL® 150
150 ±15
≤ 1.5
3.7‑4.5
AEROSIL® 200
200 ±25
≤ 1.5
3.7‑4.5
AEROSIL® 255
255 ± 25
≤ 1.5
3.7‑4.5
AEROSIL® 300
300 ± 30
≤ 1.5
3.7‑4.5
AEROSIL® 380
380 ± 30
≤ 2.0
3.7‑4.5
AEROSIL® OX 50
50 ± 15
≤ 1.5
3.8‑4.8
AEROSIL® TT 600
200 ± 50
≤ 2.5
3.6‑4.5
AEROSIL® 200 F
200 ± 25
≤ 1.5
3.7‑4.5
AEROSIL® 380 F
380 ± 30
≤ 2.0
3.7‑4.5
AEROSIL® 200 Pharma
200 ± 25
≤ 2.5
3.5‑5.5
AEROSIL® 300 Pharma
300 ± 25
≤ 2.5
3.5‑5.5
The data represents typical values.
 
Along with the traditional polyester, silicone, paints and coatings applications, hydrophilic AEROSIL® products are used with increasing success in high technology fields. The particle nature and high purity of fumed silica play key roles in the electronics and optical fibers industries.

Furthermore, the hydrophilic AEROSIL® grades are characterized by an X-ray amorphous structure. Depending on the market and application, products with various primary particle sizes and different BET-surface areas are available. Certain types are also available in compacted form (V and VV grades) and in a pharmaceutical grade.
Positive effects:
  • Optimum adjustment of rheology during processing
  • Reinforcement of silicone elastomers
  • Thickening of non-polar liquids
  • Free-flow of foodstuffs and industrial powders
  • High chemical purity
  • Excellent insulation properties, even at high temperatures
  • Conversion of liquids to powders, e.g. pharmaceuticals, cosmetics
  • Gelification of battery acids
  • Rheology control of greases and lubricants