Welcome to Shandong Zhonglian Chemical Co., Ltd. Equity Code:880747
Food-Grade Colloidal Silica
Classification :
Anti-Caking Silicon Dioxide
Keywords :
Food-Grade Colloidal Silica
PRODUCT DETAILS
Food-grade colloidal silica (SiO₂, International Code E551) is a nano-scale three-dimensional network colloidal dispersion manufactured under acidic conditions. Fully compliant with FDA, EU LFGB, USP, FCC, and GB 4806.9-2016 standards, it benchmarks the core indicators of Evonik Ludox and Grace’s food-grade colloidal silica. With SiO₂ purity ≥98%, it is dust-free, anhydrous, tightly structured, and highly dispersible—delivering core properties of suspension, thickening, and stability with excellent compatibility across various food substrates. It serves as a high-efficiency functional additive for liquid/semi-solid foods.
1. Technical Specifications
Parameter | Details |
Product Name | Food-Grade Colloidal Silica |
Appearance | Colorless transparent / pale milky white colloidal liquid, no suspended solids or sediment |
Particle Size Range | 5-50nm (nano-scale, matching Grace’s specifications) |
Silica Content | 20%-40% (solid content, customizable) |
pH Value | 2.5-9.5 (adjustable on demand, matching Evonik’s variants) |
Loss on Drying | ≤0.5% (105℃/2h, based on solid content) |
Typical Addition Level | 0.01%-0.5% (compliant with global food additive limits) |
Shelf Life | 18 months (sealed, room temperature storage) |
Executive Standards | FDA, EU LFGB, USP, FCC, GB 4806.9-2016 |
Packaging | 25/200kg food-grade sterile PE drums |
Lead Time | 5-10 days |
Sample | Free of charge |
Production Capacity | 10,000-ton-class intelligent colloidal production line (dedicated for food grade) |
2. Application Instructions
Benchmarking the application scenarios of Evonik and Grace’s food-grade colloidal silica, this three-dimensional nano-network structured product delivers three core functions:
- High-Efficiency Suspension: Adding 0.01%-0.5% to cereal beverages, probiotic drinks, and trace element oral liquids prevents solid particle sedimentation, achieving long-term stability without stratification during shelf life.
- Controllable Thickening: Precisely adjusts product viscosity in salad dressings, mayonnaise, and jams—enhancing taste without affecting color or flavor.
- Film-Forming Preservation: Forms a transparent thin film on canned fruits and coated candies, preventing oxidation and moisture loss to extend freshness.
Widely used in various liquid beverages, seasoning sauces, jellies/puddings, oral liquid foods, and canned foods—all applications comply with GB 4806.9-2016 food contact material standards.
3. Factory Advantages
Specializing in R&D and production of food-grade colloidal silica, our technology and quality control align with Evonik and Grace’s international standards:
- Hold patents for acidic sol-gel preparation processes, equipped with a food-grade sterile production base—lines feature fully enclosed 304 stainless steel design to meet GMP food production requirements.
- Utilize imported testing equipment (e.g., nano-particle size analyzers, laser scatterometers) and establish a dedicated quality control system for colloidal dispersion uniformity and stability with 19 full-process inspection procedures.
- Offer customized production capabilities, adjusting solid content, pH value, and viscosity to match the full range of Evonik Ludox product specifications.
- Certified with ISO22000 food safety management system, with products passing China’s GB 4806.9-2016 and major global food contact material certifications.
4. Shipping & Packaging
- Standard Packaging: 25kg food-grade sterile PE small drums, 200kg food-grade PE large drums with food-grade liners.
- Anti-Contamination Design: Fully sterile filling, double-sealed drum lids, and food-grade product labels to avoid contamination during transportation.
- Storage & Transportation: Store sealed in a well-ventilated room temperature environment (avoid freezing, direct sunlight, and severe collision); shelf life 18 months; non-hazardous chemical, complying with global food-grade liquid excipient storage and transportation standards.
- Labeling Compliance: Each drum is marked with solid content, pH value, addition limits, usage methods, and food contact material certifications—with customizable multi-language labels available upon request.
5. Frequently Asked Questions
Q: What are the core differences between this product and precipitated/fumed silica?
A: This product is a colloidal dispersion (dust-free) designed for liquid/semi-solid foods, with core functions of suspension and thickening. Precipitated/fumed silica are powdered, suitable for powdered foods, with core functions of anti-caking and flow enhancement.
Q: Will it alter food flavor after addition?
A: No. As an inorganic non-metallic material with stable chemical properties and no odor, it has no impact on food flavor at addition levels ≤0.5%.
Q: How does solid content affect application?
A: High solid content (30%-40%) is suitable for high-viscosity foods (e.g., sauces, jellies); low solid content (20%-30%) is ideal for low-viscosity foods (e.g., beverages, oral liquids)—customizable to match Evonik Ludox’s solid content specifications.
6. Certifications & Honors
- FSSC22000
- ISO22000:2018
- ISO9001:2015
- SHC HALAL
- OU KOSHER
- FDA Food Contact Material Certification
- EU LFGB Certification
- USP/FCC Compliance Certification
- GB 4806.9-2016 Food Contact Material Certification
- Invention Patent for Acidic Sol-Gel Process
- Food-Grade Colloidal Excipient Production License
- National High-Tech Enterprise
- Global Food Contact Material Supplier Certification
Packaging and Shipping
Zhongqi (Guangdong) Silicon Materials Co., Ltd., with over 20 years of experience in the food-grade silica field, is a national high-tech enterprise and a Guangdong Province specialized and innovative enterprise. Trusted by numerous international food giants, it is a leader in high-end food-grade silica. Shandong Zhonglian Chemical Co., Ltd. is Zhongqi's sole officially authorized overseas sales subsidiary.
laboratory
The company has established a world-leading R&D and intelligent manufacturing system, built GMP-standardized workshops, constructed 10,000-ton intelligent production lines, established a national-level testing center equipped with cutting-edge international equipment, and built its own high-standard microbiological testing laboratory. From raw material screening to finished product delivery, the entire process strictly adheres to domestic and international food safety management certifications, achieving simultaneous leadership in both "quality" and "quantity."
Customer Visit
We are committed to silicon dioxide for 20 years, our product is well know in the world and cooperate with some Fortune 500 companies, such as the Nestlé，Yihai Kerry，COFCO，China Resources，Budweiser，Symrise, and so on.
HONOR
In 2021, the company was listed on the Guangdong Stock Exchange, marking the beginning of its international expansion. Today, Zhongqi Silicon Industry, with an open vision, empowers the global food industry's safety system with the power of "Made in China." Going forward, the company will continue to focus on molecular-level safety to ensure peace of mind and, with a global perspective, to create a purer quality of life. Because true strength lies in making invisible protections visible to the world.
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Jinan City, Shandong Province,China
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Guangzhou City, Guangdong Province
