Fumed Silica Felcosil-EC 300

Felcosil-EC 300 is hydrophilic fumed silica with a specific surface area of 300m2/g. It is a kind of high purity white colloidal powder.

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Felcosil-EC 300 is hydrophilic fumed silica with a specific surface area of 300m2/g. It is a kind of high purity white colloidal powder.

» Used as anti-settling, thickening, anti-sagging agent

» Improvement of free flow and anti-caking characteristics of powders

» Rheology and thixotropy control of liquid systems, binders, polymers, etc.

» Reinforcement filler in elastomers

» Excellent transparency in unsaturated polyester resins

Specifications

Properties	Target Values (Spec Limits)
Appearance	White Powder
BET specific surface area m2/g	275-325
Heating Loss at 105 °C 2h wt.% Max	1.5
Igniting Loss wt.% (2h at 1000 °C, based on materials dried for 2h at 105 °C) Max	2.5
45μm Mesh residue on sieve wt.% Max	0.05
pH Value in 4% dispersion	3.6-4.5
SiO2 (based on ignited material) % Min	99.8
Tamped density (based on material dried for 2h at 105 °C g/L	40-60
Carbon contend(based on material dried for 2h at 105 °C wt.% Max	0.2