CAS No.: | 7631-86-9 |
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Formula: | Sio2 |
EINECS: | 231-545-4 |
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Product Technical Specification
Prodct type |
Silicon Dioxide on Toothpaste Class (thickening) |
Silicon Dioxide on Toothpaste Class (friction) |
Silicon Dioxide on Toothpaste Class (mixed type) |
Appearance |
White powder |
White powder |
White powder |
PH value (5% water-solubility) |
5.5~7.5 |
6.5~8.5 |
6.5~8.5 |
Fineness % |
Get through 320 mesh screen ≥98 |
Get through 320 mesh screen ≥98 |
Get through 320 mesh screen ≥98 |
Loss on drying(105ºC)% |
≤10 |
≤10 |
≤10 |
Loss on ignition (900 ºC) % |
≤8.3 |
≤8.3 |
≤8.3 |
Sulfate % |
≤0.4 |
≤0.4 |
≤0.4 |
Chloride % |
≤0.1 |
≤0.1 |
≤0.1 |
WhitenessWG, % |
≥93 |
≥93 |
≥93 |
Soakage ml/20g |
54~60 |
17~20 |
30~42 |
Content of Sio2 % |
≥96 |
≥96 |
≥96 |
Iron% |
≤0.02 |
≤0.02 |
≤0.02 |
Refractive index (20ºC) |
1.435~1.460 |
1.435~1.460 |
1.435~1.460 |
Apparent densityg/ml |
0.15~0.20 |
≥0.30 |
≥0.30 |
Other heavy metals (Pb) mg/kg |
≤20 |
≤20 |
≤20 |
Arsenic mg/kg |
≤2 |
≤2 |
≤2 |
total number of bacteriaCfu/g |
≤200 |
≤200 |
≤200 |
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