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.

  • Item NO.:

    Felcosil-EC R272
  • EINECS No:

    238-878-4
  • CAS No.:

    10279-57-9
  • Chemical Formula:

    SiO2

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

  • Used as thickening, thixotropic, reinforcement in RTV silicone rubber
  • Rheology control of adhesive 
  • Used as anti-settling, thickening, anti-sagging agent in coatings, inks
  • Improvement of free flow and anti-caking characteristics of powders

 

Specifications

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

Application

• HTV and RTV silicone rubber 

• Adhesives and sealants

• Paints, coatings and pigments

• Printing inks

• Cable compounds and gels

Fumed Silica Felcosil-EC R272 in Printing Inks

 

1. Package: 10kg/PE bag

2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.

3. Shelf life: One year in ventilating, cool and dry area.

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