Silica for YH520A toothpaste is an amorphous powder, tasteless, insoluble in water or acid, and chemically inert. It has good compatibility with fluoride and other raw materials in toothpaste. The structure and particle size of silica can be controlled by production conditions. According to different types of toothpaste, three products are produced: friction type, mixed type, and thickening type.
YH-SIL520A series products have been tested and meet the People's Republic of China Light Industry Standard QB/T2346-97

project | Friction type | Hybrid | Thickening type |
Silica content(%) | ≥95 | ≥98 | ≥98 |
Exterior | White powder, no impurities visually | White powder, no impurities visually | White powder, no impurities visually |
Whiteness (WG)% | ≥93 | ≥98 | ≥98 |
PH (5% water dispersion) | 6.5-8.5 | 6.5-8.5 | 6.5-8.5 |
Under the sieve 320 mesh (%) | ≥98 | ≥99 | ≥99 |
1050C volatile matter (%) | ≤10 | ≤10 | ≤10 |
Drying ignition loss (9000C)% | ≤8.3 | ≤6 | ≤6 |
Water absorption value (ml/20g) | 17-20 | 30-42 | 45-60 |
Sulfate (calculated as Na2SO4)% | ≤0.4 | ≤0.4 | ≤0.4 |
Chloride (as NaCl)% | ≤0.1 | ≤0.1 | ≤0.1 |
Sulfide | naught | naught | naught |
Heavy metal (in Pb) content (mg/kg) | ≤20 | ≤20 | ≤20 |
Arsenic (As) content (mg/kg) | ≤2 | ≤2 | ≤2 |
Total number of bacteria (cfu/g) | ≤200 | ≤200 | ≤200 |




25KG/50KG Woven bag with inner, or 1000kg big woven plastic bag.


FAQ
- 1. Q: What's your MOQ(minimum order quantity)?
A: 200kg.
- -2. Q: What's your packing methods?
A: 10 kg fumed silica packed in multi-layer paper bag. 20 bags in one pallet.
- -3. Q: What's your delivery time?
A: 8-10days after receiving the deposit .
--4. Q: Are you a manufacturer or a trader?
A: We are a silica manufacturer for more than 30 years
--5. Q: Where is your factory?
A: Our factory is located in the Industrial Park of Wanzai County, Jiangxi Province. We set up an international trade department in Shanghai.
- -6.Q: Do you attend the fair of chemical industry?
A: Yes. We attend the industry fair every year.
- -7.Q: Do you provide samples for testing?
A: Yes. (200g-500g)sample is available for your inspection, but the freight needs to be charged by customer(Recommended DHL)