close
Choose Your Site
Global
Social Media
Premium Cosmetic Grade MicroFine Ground Calcium Carbonate (CAS: 471-34-1) is a ultra-pure, micronized mineral filler designed for high-end cosmetic formulations, featuring an average particle size of 5–15μm, purity ≥99.9%, and strict heavy metal control (Pb <1ppm, As <0.5ppm). Milled from food-grade limestone deposits, this white powder offers exceptional skin compatibility, optical diffusivity, and texture enhancement, making it an essential ingredient in face powders, creams, and sunscreens. Its hydrophobic surface treatment (dimethicone or stearic acid) ensures seamless dispersion in oil and water phases, while the natural origin complies with EC 1223/2009 and FDA 21 CFR 73.175 for cosmetic use.
Cosmetic-Grade Purity and Safety:
99.9% Purity: Free from quartz (SiO₂ <0.1%) and other abrasive minerals, with microbial limits (Total Plate Count <100 CFU/g, absence of pathogens) meeting USP <61> standards.
Heavy Metal Compliance: Pb <1ppm, Cd <0.1ppm, exceeding global cosmetic safety norms (EC Annex II, FDA 21 CFR 73.175), suitable for sensitive skin and baby care products.
Texture and Sensory Performance:
MicroFine Particle Size: 5–15μm particles create a smooth, velvety texture in pressed powders (compressibility ≥90%), reducing drag during application and enhancing blendability.
Optical Diffusion: Refractive index 1.65 scatters visible light, softening skin imperfections (wrinkle visibility -20% in UV microscopy) and providing a natural matte finish.
Surface Modification Options:
Hydrophobic Coatings: 1–3% dimethicone treatment improves compatibility with silicone-based formulations (e.g., primers, BB creams), preventing oil separation and enhancing SPF retention (UVB protection factor +15% in sunscreen blends).
Hydrophilic Grades: Untreated particles disperse in aqueous systems (lotions, serums), stabilizing emulsions with a HLB value of 8–10, reducing creaming time by 50%.
Face Powders and Foundations:
Pressed Powders: 20–40% loading improves compact strength (crush resistance ≥50N) and slip, with treated grades reducing powder fallout (transfer resistance +30% on fabric).
Liquid Foundations: MicroFine particles (D50 10μm) enhance pigment dispersion, reducing streaking and improving color uniformity (ΔE ≤1.0 across skin tones).
Sunscreens and Moisturizers:
Zinc Oxide Synergy: Used as a bulking agent in mineral sunscreens (5–10% loading), it improves SPF stability (retention ≥95% after 8 hours of sun exposure) and reduces white cast.
Anti-Aging Creams: Refractive properties enhance light scattering, temporarily reducing the appearance of fine lines (viscosity increase ≤5% at 15% loading).
Lip Products and Nail Polishes:
Lipsticks: 5–10% loading in oil-based formulas improves pigment wetting and glide, with treated grades preventing bleed (lipstick feathering -40%).
Nail Polishes: Acts as a rheology modifier, increasing film hardness (3H pencil hardness) and chip resistance (ASTM D3363: ≥5 cycles).
Q: Is this calcium carbonate nano-sized for better skin penetration?
A: No, particle size 5–15μm is non-nano, ensuring no skin penetration; nano-grade variants (≤100nm) are available for specific applications but require additional safety testing.
Q: Can it be used in organic cosmetics?
A: Yes, the natural origin and absence of synthetic coatings make it compliant with COSMOS and NSF Organic Standards (untreated grades only).
Q: How does surface treatment affect preservative efficacy?
A: Hydrophobic coatings have no impact on parabens or phenoxyethanol; hydrophilic grades are compatible with all common preservatives (MIC ≤0.1% for microbial control).
Q: What is the maximum allowable concentration in leave-on products?
A: Up to 50% in powders and 20% in emulsions, as per EC 1223/2009; consult our safety data sheet for specific formulation guidelines.
Parameter | Description | Value/Range | Buyer Preferences |
Material Type | - | Precipitated Calcium Carbonate (PCC) | Preferred for finer particle size and purity |
Particle Size | Average Particle Diameter (µm) | 0.5 - 20 | Smaller particles for smoother texture and better absorption |
Particle Shape | - | Spherical or Irregular | Spherical particles often preferred for enhanced dispersion and uniformity |
Whiteness | - | ≥95% (ISO brightness) | Higher whiteness for brighter, more vibrant cosmetics |
Oil Absorption | - | 15 - 35 g/100g | Moderate oil absorption for balanced skin feel and matte finish |
Bulk Density | - | 0.4 - 0.6 g/cm³ | Lightweight for easier formulation and application |
Chemical Composition | CaCO₃ Content (%) | ≥98% | High purity for safer, gentler skincare |
pH Value | - | 7.0 - 9.0 | Neutral to slightly alkaline for balanced skin care and compatibility with other ingredients |
Microbial Limits | - | Total Aerobic Microbial Count ≤1000 CFU/g | Ensures product safety and freshness |
Application | - | Face Powders, Foundations, Eyeshadows, Mascaras, Lipsticks, Toothpastes | Versatile use in various cosmetics for texture, absorption, and stability |
Skin Compatibility | - | Non-comedogenic, Non-irritating | Suitable for all skin types, including sensitive skin |
Eco-Friendliness | - | Naturally Derived, Biodegradable | Appeal to eco-conscious buyers seeking sustainable beauty solutions |
