Welcome to Shandong Zhonglian Chemical Co., Ltd. Equity Code:880747
Precipitated Hydrated Silica
Classification :
Toothpaste Silicon Dioxide
Keywords :
Precipitated Hydrated Silica
PRODUCT DETAILS
1. Product Advantages
This product is synthesized via the precipitation process. It combines the high stability of precipitated silica with the high transparency and excellent formulation compatibility of hydrated silica, fully complying with high‑end toothpaste raw material standards including GB/T 32673‑2016, FDA and FCC.
Its molecules contain stably bound water with a porous spherical structure, uniform particle size and outstanding dispersibility. It delivers three key performances: superior abrasive cleaning, thickening & paste‑stabilizing capacity, and light‑transmitting forming property. With purity ≥99% and ultra‑low heavy‑metal residues, it features excellent compatibility and fits full formulation systems for transparent and functional toothpaste.
The RDA value is adjustable within 30‑150, covering applications from ultra‑gentle care to moderate whitening. It produces highly transparent paste with robust stability, free of water separation or delamination under high‑low temperature conditions. It serves as a mainstream core raw material for high‑end daily‑chemical toothpaste.
2. Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Precipitated Hydrated Silica |
| Appearance | White spherical fluffy hydrated powder |
| Particle Size Range | 5‑15 μm |
| SiO₂ Content | ≥99% |
| Bound Water Content | 8%‑12% |
| pH Value | 6.5‑8.0 (5% suspension) |
| Volatiles at 105 ℃ | ≤12.0% |
| Typical Dosage | 15%‑30% |
| RDA Value | 30‑150 (precisely adjustable) |
| Compliance Standards | GB/T 32673, USP, FCC, FDA |
| Packaging | 10 kg / 20 kg valve paper bags |
| Lead Time | 5‑10 days for in‑stock items |
| Sample | Free of charge |
| Production Capacity | 10,000‑ton‑grade dedicated production line for precipitated hydrated silica |
3. Application Scenarios
It is mainly applied in premium categories such as high‑end transparent gel toothpaste, gradient‑color toothpaste, whitening dental‑care toothpaste, anti‑sensitive toothpaste and fluoride‑free remineralizing toothpaste.
Benefiting from its highly transparent hydrated structure, it enables high‑clarity, aesthetic‑looking paste and solves turbidity and poor light‑transmission issues of conventional toothpaste. It balances gentle cleaning and paste stability, supports incorporation of various active ingredients, and exhibits excellent storage stability across temperature variations. The paste resists yellowing and deterioration over long‑term storage, making it the preferred raw material for cosmetic‑grade and high‑end functional toothpaste.
4. Factory Strength
Our company owns the integrated synthesis technology for precipitated hydrated silica, which enables precise control over bound‑water content, spherical morphology and light transmittance, addressing common pain points of conventional products such as inconsistent transparency and insufficient stability.
We are equipped with specialized testing instruments including hydration degree testers, light transmittance analyzers and high‑precision RDA test equipment to monitor core product performance throughout production. A closed‑loop production system covering precipitation, hydration, modification and inspection is implemented, with 26 full‑item inspection procedures to guarantee batch‑to‑batch consistency.
Supported by a 10,000‑ton‑grade dedicated production line for stable supply, our products are widely adopted by premium toothpaste brands worldwide and exported to high‑end markets in Europe, America, Japan and South Korea.
5. Packaging & Shipment
- Standard Packaging: 10 kg / 20 kg high‑seal valve paper bags, suitable for high‑grade raw‑material storage.
- Moisture‑proof Design: Composite waterproof inner liner plus outer protective layer to preserve the hydrated powder structure and prevent performance degradation caused by water loss.
- Storage & Transportation: Store in cool, dry and constant‑temperature conditions; avoid high‑temperature and direct sunlight. Shelf life: 24 months.
- Marking Specification: Labels display dedicated hydrated‑silica parameters and light‑transmittance indicators; custom‑brand shipping marks are available.
6. FAQ
Q: What is the difference between precipitated hydrated silica and ordinary precipitated silica?
A: Precipitated hydrated silica contains stably bound water with more regular spherical morphology, higher transparency, milder abrasion and better paste stability. It supports transparent‑toothpaste formulation and delivers far‑superior overall performance versus ordinary precipitated silica, targeting the high‑end toothpaste market.
Q: Will long‑term storage cause water loss and impair product performance?
A: No. The contained water is structural bound water rather than free water. No water loss occurs under proper sealed storage, and performance remains stable long‑term.
Q: Is it suitable for colored transparent toothpaste?
A: Fully compatible. Its high light‑transmission property will not mask pigment hues, enabling aesthetic paste effects such as transparent gradient and colored transparent toothpaste.
7. Certifications & Honors
- FSSC22000 & ISO22000 Food Safety Management System
- ISO9001 Quality Management System
- International Certifications: FDA, FCC, USP
- HALAL & KOSHER Certifications
- National High‑Tech Enterprise
- Specialized, Refined, Differential & Innovative Enterprise
- Patents for Precipitated Hydration Process
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
