IOTA FINE-SIL520A silicon dioxide for toothpaste is amorphous powder, tasteless, insoluble in
water or acid, chemically inert, has good solubility with fluoride toothpaste
and other raw materials, structure and particle size of silica can be
controlled by production conditions, according to different types of
toothpaste, respectively produce 3 types: friction type, mixed type and thickening
type.
Main specifications and technical data
IOTA FINE-SIL520A
series has been tested, it is comply with the light industry standard of People's
Republic of China QB/T2346-97
ITEM
|
Friction
type
|
Mixed type
|
Thickening
type
|
SiO2(dried)
|
≥95
|
≥98
|
≥98
|
Apperance
|
White
Powder
|
White
Powder
|
White
Powder
|
Whiteness
%
|
≥93
|
≥98
|
≥98
|
PH Vaule (5% water dispersion)
|
6.5-8.5
|
6.5-8.5
|
6.5-8.5
|
Pass 320 Mesh
Screen %
|
≥98
|
≥99
|
≥99
|
Loss on
Drying(105℃)
|
≤10
|
≤10
|
≤10
|
Loss on
Ignition(900℃)%
|
≤8.3
|
≤6
|
≤6
|
Drink
Value ml/20g
|
17-20
|
30-42
|
45-60
|
Na2SO4 content %
|
≤0.4
|
≤0.4
|
≤0.4
|
NaCl
content %
|
≤0.1
|
≤0.1
|
≤0.1
|
Sulfide
Content
|
None
|
None
|
None
|
Heavy
Metals(Pb) Content
|
≤20
|
≤20
|
≤20
|
As Content
mg/kg
|
≤2
|
≤2
|
≤2
|
Bacilli
cfu/g
|
≤200
|
≤200
|
≤200
|