Silica TP 28 for High Brasive Toothpaste Formulations
Chemical Properties
Silica TP 28 is a synthetic silica with superior abrasive power and compatibility with other ingredients.
Specifications
|
Items |
Unit |
Specification |
|
Appearance |
- |
White Powder, free of visible foreign matter |
|
pH Value |
5% Slurry |
6.0-8.5 |
|
Particle Size, pass on sieve 325% |
- |
≥96 |
| Loss on Drying % in 105℃ | - | ≤10 |
| Loss on Ignition in 1000℃ | - | ≤8.5 |
| Sodium Sulfate (as Na2SO4+Nac) | % | ≤2.0 |
| Whiteness | - | ≥95 |
|
Water Absorption |
ml/20g |
≤30 |
|
Purity of SiO2 |
% |
≥96 |
|
Iron as Fe |
mg/kg |
≤350 |
|
Sulfide |
- |
Negative |
|
Heavy Metal as Pb |
mg/kg |
≤15 |
|
Arsenic |
mg/kg |
≤3 |
|
Total Aerobic Count |
cfu/g |
≤200 |
|
Mold & Yeast |
cfu/g |
≤100 |
|
Gram Negative Bacill |
cfu/g |
Not Detetive |
|
Pseudomonas Aeruginosa |
cfu/g |
Not Detetive |
|
S.aureus |
cfu/g |
Not Detetive |
|
Oil Absorption Value |
ml/100g |
≤150 |
|
Apparent Density |
g/m |
≥0.28 |
|
Refractive Index |
- |
1.435-1.046 |
|
Light Transmittance |
% |
≥90 |
|
Friction Value 9000 Times of Copper Wear |
- |
5-8mgCu(RDA120-180) |
Application
Silica TP 28 RDA value makes it suitable for those toothpaste formulations which demands high polishing level.usage method : The transparent toothpaste can be compounded with thickened silica at the dosage of 15-20%.
