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Typical Properties

Chemical and Physical Data
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Methods

 Ultrasil ® VN3 Ultrasil ®  FW     Ultrasil ®    VN3 GR      Ultrasil ®    VN2 GR
Typical values
Appearance     White Powder Granules

BET  Surface Area

m2/g

ISO 5794/ID

175

150

175

125

Drying Loss 1)

%

DIN ISO 787/2

5.5

5.5

5.5

5.5

pH 2)

 

DIN ISO 787/9

6.2

6.9

6.2

6.9

Tamped Density 3)

g/l

DIN ISO 787/11

255

255

330

330

Ignition Loss 5)

%

ISO 3262/11

5.0

5.0

5.0

5.0

SiO2 Content  4)

%

ISO 3262/17

98

98

98

98

1. 2 hours at 105 0C

2. 5% aqueous suspension

3. unsieved material

4. based on the substance ignited for 2 hours at 1000 0C

5. based on the substance dried for 2 hours at 105 0C