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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