PRODUCT DETAILS

1. Product Advantages

Our dedicated hydrated silica for toothpaste (SiO₂·nH₂O) complies strictly with GB/T 32673-2016, FDA and FCC international standards, serving as the dominant abrasive raw material for premium toothpaste markets worldwide. It features a porous spherical microstructure. Thanks to its hydrated molecular structure, its abrasion performance can be precisely tuned with an RDA value ranging from 30 to 150, covering all application scenarios from ultra-gentle daily care to professional whitening formulas. Boasting low Mohs hardness, it poses minimal risk of damage to tooth enamel. This product delivers outstanding compatibility with key toothpaste active ingredients including fluorides and nano-hydroxyapatite (nHAp). As a core raw material for transparent gel toothpaste, it endows paste with high clarity and transparency while retaining excellent cleansing and polishing capacity. The paste system maintains stable performance across all temperature ranges without delamination or water separation.

2. Product Specifications

Parameter	Details
Product Name	Hydrated Silica for Toothpaste
Appearance	White fluffy spherical powder
Particle Size Range	5–15 μm (customizable)
SiO₂ Content	≥99%
pH Value (5% Suspension)	6.5–8.0
Volatile Matter at 105°C	≤10.0%
Total Salts (Na₂SO₄ + NaCl)	≤1.0%
Typical Dosage	15%–30% (adjusted per toothpaste grade)
RDA Value	30–150, precisely adjustable
Compliance Standards	GB/T 32673, USP, FCC, FDA
Packaging	10/15/20 kg valve paper bags
Lead Time	5–10 days for in-stock orders
Samples	Free of charge
Production Capacity	Intelligent production lines with an annual output of ten thousand tons

3. Application Scenarios

Specially developed for high-end oral care products, this material is ideal for transparent gel toothpaste, professional whitening toothpaste, ultra-mild children’s toothpaste, anti-sensitive toothpaste and fluoride-free nHAp toothpaste.

For transparent toothpaste: It forms a high-transmittance gel system to achieve crystal-clear, attractive paste appearance.
For whitening toothpaste: Its porous structure adsorbs extrinsic stains from tea, coffee and other sources; paired with customizable abrasion index, it enables gentle whitening effects.
For children’s toothpaste: Custom ultra-mild grades with RDA＜80 are available to meet gentle oral care demands for kids.
For nHAp fluoride-free toothpaste: It works synergistically with nano-hydroxyapatite to boost enamel remineralization, making it the preferred abrasive for premium fluoride-free toothpaste.

4. Factory Strength

Zhongqi (Guangdong) Silicon Materials Co., Ltd. is a National High-tech Enterprise and Provincial Specialized, Refined, Differential & Innovative Enterprise. With exclusive production technologies and independent R&D system for hydrated silica, we have over 20 years of manufacturing experience in oral care raw materials and rank among China’s leading suppliers of toothpaste-grade hydrated silica. We are equipped with premium testing instruments including laser particle size analyzers, RDA testing equipment and specific surface area analyzers to precisely control particle size, sphericity and abrasion index of hydrated silica. A full set of 26 inspection procedures covering raw materials to finished goods ensures consistent hydration level and stable performance for every batch. Our ten-thousand-ton fully automated production lines guarantee steady supply capacity. Our products have been incorporated into supply chains of multiple globally renowned toothpaste brands and exported to high-end oral care markets across Europe, America, Japan, South Korea and other regions worldwide.

5. Packaging & Delivery

Standard Packaging: 10/15/20 kg valve paper bags; food-contact grade packaging available on request.
Moisture-proof Design: Composite film valve bags with outer PE protective layers to block moisture and preserve powder sphericity and flowability.
Storage & Transportation: Store in cool, dry conditions; shelf life reaches 24 months. Non-hazardous goods, eligible for global sea and air freight.
Labeling Standard: Each package is printed with legal information including oral care raw material classification, applicable standards and production license numbers; custom shipping marks can be provided as per client requirements.

6. FAQ

Q1: What is the core difference between hydrated silica and ordinary anhydrous silica?
A1: Hydrated silica contains bound water within its molecular structure and features a porous spherical shape. It delivers milder, finely adjustable abrasion with much lower enamel damage risk, plus superior compatibility with all active ingredients in toothpaste. It is the only abrasive capable of producing transparent gel toothpaste and remains the mainstream choice for premium toothpaste markets globally.
Q2: Can hydrated silica be used in fluoride-free toothpaste?
A2: Absolutely. Our product shows excellent compatibility with core fluoride-free ingredients such as nano-hydroxyapatite (nHAp) and calcium phosphate, and can synergistically enhance enamel remineralization, making it an ideal abrasive for high-end fluoride-free toothpaste.
Q3: What is the shelf life of hydrated silica?
A3: The shelf life is 24 months when stored in a cool, dry environment. Once opened, reseal the package tightly to avoid moisture absorption which may impair powder performance.

7. Certifications & Honors

FSSC22000
ISO22000:2018
ISO9001:2015
SHC HALAL Certification
OU KOSHER Certification
FDA Registration
Oral Care Raw Material Production License
National High-tech Enterprise Certificate
Guangzhou Specialized, Refined, Differential & Innovative Enterprise Certificate
17 Patents Granted by the National Intellectual Property Administration of P.R.China

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.

Toothpaste Silicon Dioxide

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Service E-mail

Levin@silicaplant.com

+8618254486999

Sales Add

Jinan City, Shandong Province,China

Production Add

Guangzhou City, Guangdong Province

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