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Published Date: October 26, 2026
Shijiazhuang Huabang Mineral Products Co., Ltd launches high-quality precipitated silica, also well-known as white carbon black, for global industrial buyers. As an amorphous synthetic silicon dioxide filler, this product delivers excellent reinforcing performance, thixotropy, high porosity and good dispersion. It is widely used in rubber goods, tire industry, architectural & industrial coatings, printing inks, plastics, adhesives and sealants. Rigorous production process ensures stable batch-to-batch performance. Every export shipment comes with complete COA and MSDS documents to satisfy REACH compliance for international markets.
Our precipitated silica effectively improves tensile strength, tear resistance and abrasion-resistance of rubber compounds. For tire formulations, it lowers rolling resistance while enhancing wet-skid resistance, helping tire manufacturers produce energy-saving green tires. It also performs well in silicone rubber, shoe soles, hoses and rubber sealing parts. Both hydrophilic and surface-modified hydrophobic grades are available for different rubber matrix systems.
Precipitated silica acts as an efficient rheology modifier in paint and printing ink. It prevents pigment settling, controls sagging for thick-film coatings, improves suspension stability and enhances matte effect for matte paint and powder coatings. It shows good compatibility with water-based, solvent-based coating formulas without negative influence on gloss and weather resistance of final paint films.
Controlled pore structure and particle distribution support easy dispersion within plastics, adhesives and sealants. In plastic products, it improves hardness, anti-blocking property and dimensional stability. For sealant systems, it delivers thixotropic behaviour to avoid sagging during vertical construction. The material features great chemical inertness, resisting acid, alkali and general chemical corrosion.
Compared with fumed silica, precipitated white carbon black provides balanced reinforcing effect with competitive cost, making it the preferred option for mass-production of rubber, coating and plastic end-products. Custom BET specific surface area grades can be offered according to customer formulation requirements.
|
Test Item |
Unit |
Precipitated Silica (White Carbon Black) |
Test Standard |
|
SiO₂ Content (dry basis) |
% |
≥92 |
ISO 3262-19 |
|
BET Specific Surface Area |
m²/g |
145-200 |
ISO 9277 |
|
Loss on Drying (105℃) |
% |
≤6.0 |
ISO 787-2 |
|
Loss on Ignition |
% |
≤7.0 |
ISO 787-11 |
|
pH (5% suspension) |
— |
5.0-7.0 |
ISO 787-9 |
|
325-mesh Residue |
% |
≤0.5 |
ISO 787-7 |
|
Water-soluble Salts |
% |
≤1.5 |
ISO 787-3 |
Frequently Asked QuestionsQ1: What is the main difference between precipitated silica and fumed silica? A: Precipitated silica (white carbon black) is manufactured by wet chemical precipitation method, with medium specific surface area and cost-advantage, widely used for tires, general rubber and matte coatings. Fumed silica is produced via flame hydrolysis, featuring ultra-high BET surface area, mainly used for high-grade silicone sealants and high-performance rheology modification.
Q2: Can precipitated silica be applied in water-based paint formulations? A: Yes. Properly selected surface-treated precipitated silica disperses well in water-borne paint systems. High-speed stirring is recommended to achieve full dispersion for stable anti-sagging and matting performance.
Q3: What are your packing and trade conditions? A: Standard packing: 25kg multi-layer kraft paper bag. 1000kg jumbo bag is optional. We support FOB, CIF trade terms. COA and MSDS documents are supplied for every batch for customs clearance for Russia, EU and other overseas regions.
Q4: Can you provide free samples and custom grades? A: Regular grades are kept in stock. Custom surface treatment and BET value adjustment are acceptable. Free lab samples can be provided for customer formulation testing.
World-wide manufacturers of rubber, coatings, plastic and adhesive materials keep seeking stable multi-functional reinforcing fillers. Huabang precipitated silica maintains consistent quality and meets international environmental requirements.
If you are sourcing reliable precipitated silica (white carbon black) for your production projects, please contact our technical sales team for free samples, complete COA report and formal quotation. Visit our official website to view more mineral filler and pigment solutions.
Shijiazhuang Huabang Mineral Products Co., Ltd is a professional Chinese manufacturer and exporter of mineral functional powders and inorganic pigments. Our product portfolio covers synthetic iron oxide pigments, precipitated barium sulfate, precipitated silica (white carbon black), calcined kaolin, silica fume and carbon black. We provide technical formulation support, complete test documents and stable bulk supply for worldwide customers in coatings, rubber, plastic, cable and ceramic sectors.
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