Fumed Silica Felcosil-EC R272 in Printing Inks

Felcosil-EC R272 is a kind of hydrophobic fumed silica, treated with DDS (Dimethyldichlorosilane). It's high purity white colloidal powder.

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Fumed Silica Felcosil-EC R272 in Printing Inks

Physical Properties

Felcosil- EC R272 is hydrophilic fumed silica with a specific surface area of 300m2/g. It is a kind of high purity white colloidal powder.

Properties

Properties	Target Values (Spec Limits)
Appearance	White Powder
BET specific surface area m2/g	90-130
Heating Loss at 105 °C 2h wt.% Max	0.5
Igniting Loss wt.% (2h at 1000 °C, based on materials dried for 2h at 105 °C) Max	2.0
pH Value in 4% dispersion	3.8-5.0
SiO2 (based on ignited material) % Min	99.8
Tamped density (based on material dried for 2h at 105 °C g/L	40-60
Carbon conten (based on material dried for 2h at 105 °C wt.% Max	0.6-1.2