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Hydrophilic Fumed Silica

Hydrophilic Fumed Silica

Product description: HS-300 is hydrophilic fumed silica with a specific surface area around 300㎡/g.

Applications: This product used for Coatings & Paintings; Silicone rubber and Other elastomers; Thin Film & UPR; Adhesives and Sealants; Printing ink

Properties: Reinforcing filler in elastomers; Anti-settling, thickening and anti-sagging agent; Rheology and thixotropy control in liquid systems; Free flow aid and anti-caking aid for powders; High transparency in UPR

Testing standard: GB/T 20020



Specific Surface Area(BET), m2/g


pH value in 4% dispersion


Loss on drying(2 hours at 105℃) %

2.0 max

Loss on ignition(2 hours at 1000℃ based on material dried for 2 hours at 105℃) %

2.5 max

Sieve Residue(45μm), mg/kg

250 max

Silica Content(Based on ignited material) %

99.8 min

Tamped Density(Based on material dried at 105℃ for 2 hours); g/dm³