THE BEST Hydrophilic Fumed Silica MANUFACTURER in China

Hubei Huifu Nanomaterial Co., Ltd. is a chemical manufacturer of nanomaterials in China, Our main products are fumed silica, fumed titanium dioxide, and fumed alumina Al2O3. We get 20+ years of expertise and 12,000 tons annual capacity.

HIFULL Hydrophilic Fumed Silica

Hydrophilic fumed silica is a silica-based polymer with a tendency of absorbing moisture. It is used in high-technology fields or as an ingredient in paints, coatings, electronics, and optical fibers industries.

There are various grades of hydrophilic fumed silica, which are defined by their amorphous structure. It is used to provide thixotropic properties in coatings and adhesives. It also assists in enhancing flow in the production industry, such as cosmetics and pharmaceuticals.


For the total 6 grades of HIFULL hydrophilic fumed silica, the main difference lays in the specific surface area, which affects its functions, such as thickening performance, thixotropic properties.

  • HIFULL HL-150W (BET=140㎡/g)

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  • HIFULL HL-200W (BET=200㎡/g)

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  • HIFULL® HL-200 (BET=200㎡/g)

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  • HIFULL® HL-260 (BET=260㎡/g)

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  • HIFULL® HL-450 (BET=450㎡/g)

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  • HIFULL® HL-90 (BET=100㎡/g)

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  • HIFULL® HL-150 (BET=150㎡ /g)

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  • HIFULL® HL-300 (BET=300㎡/g)

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  • HIFULL® HL-380 (BET=400㎡/g)

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*Registrations: HIFULL fumed silica products get registrations of REACH & Pre-registration of K-REACH &KKDIK 

Specific SurfaceArea (nitrogen adsorption method) (m²/g)100±20150±15200±20260±20300±25380±30450±30
pH value in dispersion3.9~4.53.9~4.53.9~4.53.7~4.53.7~4.53.7~4.53.7~4.5
Loss at 105℃ (%)≤1.0≤1.5≤2.0≤2.0≤2.0≤2.5≤2.5
Loss on ignition (%)≤1.5≤2.0≤2.0≤2.0≤2.5≤2.5≤2.5
Sieve  residue (45μm) (mg/kg)≤250≤250≤250≤250≤250≤250≤250
Silica content (%)≥99.8≥99.8≥99.8≥99.8≥99.8≥99.8≥99.8
Tamped density (g/L)45~6040~6040~6040~6040~6040~6040~60
Product applicationSurface treatment for base materials, Polish&Grind, Coatings, Printing inks, Personal Care Products, FoodSilicone rubber, rubber, offset printing, medicines, cosmetics, creams, thermal insulation materialsSilicone rubber, adhesives, inks, coatings, pharmaceuticals, defoamers, thixotropic resins, gel coat resinsHTV&LSR Silicone Rubbers, Adhesives, Coatings & PrintingInks, UPR resins, Thermal MaterialsSilicone rubber, rubber, coatings, paintSilicone rubber, defoamer, ink, adhesive, pesticideHigh transparent LSR, Adhesives, Coatings &Printing Inks, Deformers, Carrier

Performance benefit

  • Optimum adjustment of rheology during processing
  • Reinforcement of silicone elastomers
  • Thickening of non-polar liquids
  • Free-flow of foodstuffs and industrial powders
  • High chemical purity
  • Excellent insulation properties, even at high and low temperatures
  • Conversion of liquids to powders, e.g. pharmaceuticals, cosmetics
  • Gelification of battery acids
  • Rheology control of greases and lubricants

Fumed silica, or pyrogenic silicon dioxide, is one kind of pure amorphous white inorganic powder that has a high specific surface area, nano-scale primary particle size, and a relatively high (among silica products) concentration of surface silanol groups. The properties of fumed silica can be chemically modified by reaction with these silanol groups.

Commercial available fumed silica can be divided into two groups: hydrophilic fumed silica and hydrophobic fumed silica. Because of the above-mentioned features, it is widely used as an important ingredient in many industries such as silicone rubber, paint, and plastics industries.


Our main products are fumed silica SiO2, fumed titanium dioxide TiO2, and fumed alumina Al2O3. We get 20+ years of expertise and 20,000 tons of annual capacity. We supply total of 23 grades of hydrophilic & hydrophobic fumed silica. We get registration of REACH and pre-registration of K-REACH & KKDIK. We are the leading setting body of ISO18473-1:2015ISO18473-3:2018, and ISO 23157:2021. Learn More About Hifull

Frequently Asked Question

A Manufacturer. Hubei Huifu has been researching and manufacturing fumed silica for 20+ years. We are the largest manufacturer of fumed silica with a well-developed and stable manufacturing process in China.
We get registration of REACH and pre-registration of K-REACH & KKDIK. We get certificates of ISO 9001, ISO 14001. We are the leading setting body of ISO18473-1:2015, ISO18473-3:2018 and ISO 23157:2021.

  • Manufacturer: Leading fumed silica manufacturer in China with 20+ years of expertise, 12,000 tons annual capacity 
  • Registration & Certificate: REACH, K-REACH, KKDIK, ISO9001, HALAL, KOSHER
  • Manufacturer Direct Supply: 23 grades of hydrophilic; hydrophobic fumed silica supplied, good quality, competitive price
  • International Standard: Leading setting body of ISO18473-3-2018 Fumed silica for silicone rubber application; Member of the setting body of ISO18473-1-2015 Nanoscale calcium carbonate for sealant application
  • Technology Expertise: 50+ technology patents experienced R&D team from top universities of China Project 211 & Project 985 

Free Sample: All grades of fumed silica sample available, Contact to Us

Pyrohydrolysi & Trichloromethylsilane

Fumed silica is synthesized by the pyrohydrolysis of silicon tetrachloride or trichloromethylsilane in the flame of hydrogen and oxygen. Our main raw material is silicon tetrachloride, and the secondary is trichloromethylsilane.

Hydrophilic Fumed Silica SiO2:

HL-150 / HL-200 / HL-300 / HL-380 / HL-150W / HL-200W

Hydrophobic Fumed Silica SiO2:

DDS Treated — HB-151/ HB-152 ;
PDMS Treated — HB-139 ;
HMDS Treated — HB-132 / HB-135 / HB-612/ HB-615 / HB-620 / HB-630.

Fumed Titanium Dioxide TiO2: NT-50

Fumed Aluminium Oxide Al2O3: Aluna-80 & Aluna-100

Price is based on the actual grade.

When the price of raw material fluctuates, we may adjust the price accordingly, please enquire before placing orders. Our email: Cell : + 8618571019514

When fumed silica is used as filler or additives, it helps in thickening, reinforcement, transparency, free-flow, thixotropic performance, dielectric properties, anti-settling, heat insulation, and anti-sagging. For example, for powder products, HIFULL fumed silica is used as an anti-caking agent; for liquid products, HIFULL fumed silica is used as an anti-settling agent or suspending agent.

ApplicationsFunctionsRecommended Dosage
Paints & Coatingsrheology & thixotropic control,anti-sagging,anti-settling0.5-2%
UPR, Gel Coatrheology & thixotropic control,,anti-sagging,anti-settling0.5-2%
HTV Silicone Rubberreinforcement15-30%
RTV Silicone Rubberthickening & reinforcing10-20%
Adhesivesrheology & thixotropic control, anti-sagging,anti-settling2-10%
Cable Gelthickening5-10%
Gel Batterythickening0.5-6%
Industrial Powdersanti-caking0.5-1%

Quality Stabilization: we are the earliest fumed silica manufacturers with independent R&D in China, which guarantees our product stabilization.

Largest Manufacturer: Our annual output of fumed silica is about 12,000 tons.

Strong R&D Team: Besides our own R&D institute and application& technology department, we’ve to build a research center with Sichuan University and Wuhan University, both are top-tier universities in China.

Leading Authority: We have already been the influential enterprise in the silicon industry in China. Doctor Wang Yuelin, the actual controller of Hifull, is the leader of the Sino-Germany project ISO18473-3 << Fumed Silica for Silicon Rubber>> and he is granted the Outstanding Contribution Award by the committee.

Mainly T/T, L/C and D/P, actual payment terms please check with sales when placing orders.

We will arrange delivery immediately according to the manufacturing schedule and conditions. Due to shipping schedule or other factors, please check with sales when placing orders.

Still have questions?

If you cannot find an answer to your question in our FAQ, you can always contact us and we will be with you shortly.

Contact Support

Hello, Customers

My name is Van, I’m the business manager of HIFULL, I have been in Fumed Silica Industry for more than 10 years. Feel free to contact me. I’m happy to provide you the best service and products.
Business Manager