Fumed Silica 200

Properties

Unit

Typical Value

Standardization

/

/

200

/

Specific surface area (BET)

m2/g

200±25

GB/T 20020-2005

pH-value in 4% dispersion

m/m %

3.6~4.5

ISO787-9

Loss on drying ( 2h 105℃)

m/m %

≤1.5

ISO787-2

Loss on ignition(2h 1000℃,based on material dried for 2h 105℃)

m/m %

≤2.5

ISO3262-1

Sieve residue (45μm)

m/m %

≤0.05

ISO787-18

Tamped density (based on material dried for 2h 105℃)

g/L

25~60

ISO787-11

Silica content (based on ignited material)

m/m %

≥99.8

ISO3262-20

Carbon content (based on material dried for 2h 105℃)

m/m %

≤0.2

ISO3262-20

ferrum dioxide content

m/m %

≤0.003

ISO3262-20

Corundum  content

m/m %

≤0.05

ISO3262-20

titanium dioxide  content

m/m %

≤0.03

ISO3262-20