Cosmetics Silicon Dioxide
Application: Our Cosmetics Silicon Dioxide,is a specially processed cosmetic-grade functional additive in the form of white ultra-fine spherical powder. Its core features include a spherical structure and controlled particle size distribution, providing excellent skin texture modulation, light scattering, and carrier functions for active ingredients.
CAS.NO.: 7631-86-9
Mesh Size: (customizable)
HS CODE: 2811229000
Standard: GB 25576, USP, FCC, FDA
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Key technical parameters
| Parameter items | Facial-specific indicators | Body-specific indicators | Special indicators for sensitive muscles | testing standard |
| SiO₂ content (dry basis) | ≥98.0% | ≥97.5% | ≥98.5% | GB/T 32645-2016 |
| average grain diameter （μm） | 44-300 | Laser particle size analysis | ||
| Particle size distribution width (D90/D10) | ≤2.5 | ≤3.0 | ≤2.2 | GB/T 19077-2016 |
| whiteness （WG） | ≥96 | ≥95 | ≥97 | White light meter method |
| Wear value (mg/1000 times) | ≤80 | ≤120 | ≤60 | Test method for plastic wear |
| pH value (5% aqueous dispersion) | 6.5-7.5 | 6.0-8.0 | 6.5-7.5 | potentimetric method |
| moisture content （%） | ≤3.0 | ≤3.0 | ≤2.5 | Calofu method |
| Heavy metal content (ppm) | ≤10 | ≤10 | ≤5 | Atomic absorption spectrophotometry |
