Silica Powder (SiO₂) – Technical & Industrial Grade Supplier in China
High-Purity Silicon Dioxide for Ceramics, Plastica, Rivestimenti, Gomma, Cosmesi & Industrial Manufacturing
At KosNature, we supply a wide range of silica powders engineered for industrial performance—covering nano silica, spherical silica, precipitated silica, fumed silica, silica gel powder, and custom-treated grades for specialized applications.
Our powders deliver reliable particle control, stable performance under heat and shear, and consistent batch-to-batch quality trusted by manufacturers worldwide.
Specs available: D50 = 1–60 μm, BET = 50–350 m²/g, moisture < 1%, SiO₂ > 99.5%
What is Silica Powder?
Silica powder is a high-purity silicon dioxide material produced through crushing, precipitation, fuming, or controlled spherical atomization.
Its chemical stability, hardness, insulating properties and high surface area make it one of the most widely used technical fillers across industrial processing.
Depending on the production method, silica can be:
- Amorphous precipitated silica – for rubber, plastics, feed, and anti-caking.
- Fumed (pyrogenic) silice – ultra-high surface area for rheology control, thixotropy, and viscosity modification.
- Spherical silica – flow-enhancing micro-spheres for electronics, coatings and high-end plastics.
- Silica gel powder – for desiccants, cosmesi, chromatography.
- Nano silica – reinforcement agent for plastics, cement, rubber and coatings.
Each grade behaves differently in real manufacturing systems—particle shape, surface area and hydrophilicity all influence performance.
This is why technical selection is critical.
Multi-Industry We Service
At KosNature, we specialize in manufacturing and customizing a wide range of silica materials tailored to diverse industries. Whether you’re formulating high-performance composites or developing sensitive food or cosmetic products, our silica solutions meet the highest standards of functionality and compliance.
Cibo & Nutraceuticals
Compliant with food-grade regulations, our offerings include:
Diossido del silicone (E551) – anti-caking agent for powdered foods
Food Grade Silica – used in supplements and tableting
Colloidal Silica – clarifying agent in beverages and functional liquids
Cosmesi & Personal Care
For skin-feel optimization and formulation aesthetics:
Silica Beads – spherical exfoliants for gentle cleansing
Micronized Silica / Microspheres – sebum control, soft-focus, matte finish
Spherical Silica – enhances texture, spreadability, and non-oily touch
Industrial, Gomma & Paper Applications
Our Industrial silica portfolio includes:
Precipitated Silica – ideal for rubber reinforcement, plastics, and coatings
Fumed Silica (Pyrogenic) – ultra-fine thickener and anti-settling agent
Silica Powder / Filler – cost-effective additive for strength and bulk
Amorphous Silica – multipurpose, chemically stable grade
Hydrophilic / Hydrophobic Silica – tailored for moisture affinity or repellency
Our Advantages
- 20+ years of silica powder manufacturing experience
- Certified by FDA GRAS, EFSA, ISO, Halal, Kosher
- Custom grades for food, cosmesi, and industry
- 1,000+ tons annual production capacity
- OEM & private label packaging available
- Exported to 30+ countries worldwide
Silica Powder Grades We Supply
Request Your Sample or Quote Today
We work with brands in over 30 countries. From R&D trials to large-scale production, we help you bring blue spirulina-based products to market — efficiently and reliably.
Certificazioni & Documentation
- FDA GRAS / EFSA Compliance
- ISO 9001 / Halal / Kosher
- COA, MSDS, TDS available upon request
1. What is silica powder used for?
Silica powder is used in food as an anti-caking agent (E551), in cosmetics for oil absorption and light diffusion, in construction to enhance concrete strength, and in rubber/plastics as a reinforcing filler.
2. Is silica powder safe for food applications?
Sì, food-grade silica powder is considered safe by the FDA (GRAS status under 21 CFR 172.480) and confirmed by EFSA in its 2024 re-evaluation of E551.
3. What types of silica powder do you supply?
We offer precipitated silica, fumed silica, and colloidal silica, with options for food grade, cosmetic grade, and industrial grade applications.
4. What certifications does your silica powder have?
Our products are certified under FDA GRAS, EFSA, ISO 9001, Halal, and Kosher standards.
5. Can I get customized particle size or surface treatment?
Sì, we provide custom specifications including particle size, surface area, oil absorption, and treated or untreated silica based on your formulation needs.
6. How is silica powder different from silica gel?
Silica powder is typically used as a functional ingredient, while silica gel is used as a desiccant. They differ in structure, moisture absorption, and application.
7. What is your minimum order quantity (MOQ (in inglese))?
Our MOQ varies depending on the grade and packaging but typically starts at 500 Kg.
8. Do you offer samples for testing?
Sì, free samples are available for qualified B2B buyers upon request.