Welcome to Shandong Zhonglian Chemical Co., Ltd. Equity Code:880747
Low Heavy Metal Silica
Classification :
Toothpaste Silicon Dioxide
Keywords :
Low Heavy Metal Silica
PRODUCT DETAILS
1. Product Advantages
This is a specialty toothpaste‑grade silica with ultra‑low heavy‑metal residues, specially developed for high‑safety‑grade oral care products targeting infants, mothers‑to‑be, pregnant women and sensitive‑population end‑users. It strictly complies with top‑tier food‑ingredient safety standards including GB/T 32673‑2016, FDA and FCC.
Manufactured via dedicated multi‑stage purification, ion‑filtration and impurity‑trapping processes, it imposes stringent control over heavy metals such as lead, arsenic, mercury, cadmium and other harmful trace elements. Its total heavy‑metal residue is far below national and international limit values, approaching zero.
The silica purity reaches ≥99%. It contains no fluorescent agents, no irritating impurities and no hazardous residues. The powder features fine and round particles with excellent formulation compatibility, and its pH value fits the physiological oral environment. It delivers both mild cleaning performance and paste‑stabilizing capacity. Chemically inert and stable in formulas, it prevents hazardous‑substance precipitation and residue. It serves as an essential core raw material for high‑safety‑grade toothpaste and mother‑infant‑oriented oral‑care articles.
2. Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Low Heavy‑Metal Silica |
| Appearance | White, high‑purity, fine and fluffy powder |
| Particle Size Range | 4‑12 μm (safe‑grade uniform particle size) |
| Silica Content | ≥99% |
| Total Heavy‑Metal Content | ≤0.1 ppm (ultra‑low residue) |
| pH Value | 6.6‑7.5 (mild and oral‑friendly) |
| Volatile Matter at 105 ℃ | ≤8.8% |
| Total Salt Content | ≤0.8% |
| Typical Dosage | 12%‑25% |
| RDA Value | 45‑95 (safe and mild range) |
| Compliant Standards | GB/T 32673, FDA, FCC, mother‑infant‑grade raw‑material standards |
| Packaging | 10 kg / 15 kg food‑grade sterile paper bags |
| Lead Time | 5‑10 days for in‑stock items |
| Sample | Free samples available |
| Production Capacity | 10 000‑ton‑per‑year high‑purity sterile production line |
3. Application Scenarios
Specially formulated for high‑safety‑grade oral‑care products. Main applications include swallow‑safe toothpaste for infants, children’s dental‑care toothpaste, toothpaste for pregnant women, post‑operative repairing toothpaste, and high‑end medical‑grade oral‑care toothpaste.
Thanks to its extremely low heavy‑metal residues, it fully meets safety requirements for mother‑infant groups and people with special physical conditions; trace ingestion poses no health risks. The mild, non‑irritating powder cleans teeth without damaging enamel or gingiva. It is compatible with various natural, additive‑free and functional safe toothpaste formulas, and stands as a preferred compliant raw material for global high‑end safety‑focused toothpaste brands.
4. Factory Strength
Our facility operates dedicated high‑purity sterile production workshops with fully enclosed dust‑free pollution‑free production, blocking heavy‑metal and harmful‑impurity contamination at the source. Equipped with special multi‑stage ion‑filtration and precision‑purification equipment, it accurately traps trace heavy‑metal ions for extreme raw‑material purification.
We deploy atomic‑absorption spectrophotometers and trace heavy‑metal detectors. Each batch undergoes a full 32‑item safety inspection to verify heavy‑metal compliance item‑by‑item. Our 10 000‑ton‑per‑year sterile production line ensures stable supply. Certified for mother‑infant‑grade and medical‑grade safety, our products satisfy stringent global oral‑raw‑material standards and support compliant export for premium brands.
5. Shipping & Packaging
- Standard packaging: 10 kg / 15 kg food‑grade sterile dedicated packaging, impurity‑free and pollution‑free.
- Moisture‑proof design: double‑layer sterile sealed protection to avoid external contamination and powder dampening.
- Storage & transportation: store and transport in dust‑free and cool environments with segregated stock‑keeping; shelf life: 24 months.
- Marking specifications: clear labeling of low‑heavy‑metal and mother‑infant‑grade safety parameters; custom medical‑grade shipping marks available.
6. FAQs
Q: Can low heavy‑metal silica be used in swallow‑safe children’s toothpaste?
A: Fully applicable. It features near‑zero heavy‑metal residues, no harmful impurities and no fluorescent components, complying with the highest safety standards for swallow‑safe toothpaste. Trace ingestion by infants causes no safety hazards.
Q: What is the core safety difference versus ordinary toothpaste‑grade silica?
A: Conventional silica only meets basic food‑grade requirements. Our product undergoes multi‑stage purification with extreme control over heavy‑metals and harmful‑ion residues. Its safety level far exceeds industry benchmarks, making it suitable for demanding mother‑infant‑grade and medical‑grade applications.
Q: Is there any risk of hazardous‑substance precipitation during long‑term usage?
A: No precipitation risk. It features high chemical stability with no free harmful components. No hazardous substances will precipitate under high‑temperature, low‑temperature or long‑term‑storage conditions, delivering reliable safety in use.
7. Qualifications & Honors
- FSSC22000 High‑end Food‑Safety Certification
- ISO22000:2018 Food‑Safety‑Management‑System Certification
- ISO9001:2015 Quality‑Management‑System Certification
- Medical‑Grade Oral‑Raw‑Material Compliance Certification
- FDA, FCC International High‑Purity‑Raw‑Material Certification
- HALAL & KOSHER Dual Certifications
- National High‑Tech Enterprise
- Special Patent for High‑Purity‑Raw‑Material Purification
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
