Di Ethylene Glycol CAS: 111-46-6 Di Ethelene Glycol (also known as DEG, 2,2-oxydiethanol and glycol ether ether diglycol) is a clear, colourless, odourless liquid with the molecular formula C4H10O3, CAS: 111-46-6. It has a specific gravity of 1.118 and a flash point of 154 °C. It is soluble both in water and in many organic […]
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CAS: 7631-86-9
Fumed Silica is a form of silicon dioxide, or silicon with molecular formula SiO2 and a molecular weight of 60.0843 g/mol. Fumed silica is also known as pyrogenic silica
It is a white powder odourless consisting of droplets of fused silica cooled by forming three-dimensional chains which are organized into particles of amorphous matter of very low apparent density and very high specific surface area. Fumed silica is insoluble in water.
Production
Fumed silica is obtain from silicon sand. Product is reduced with carbon and then reacted with chlorine to obtain Silicon tetrachloride (SiCl4).
Finally Silicon tetrachloride is pyrolyzed in a 3000°C electric arc.
SiCl4 + 2H2 + O2 à SiO2 + 4 HCl
Finally, silica droplets obtained, bind to each other by forming chains, then a three-dimensional network branched by cooling.
Features & Benefits:
- Anti-settling, thickening and sag resistance
- Free-flow and anti-caking
- Scratch resistance
- Abrasion resistance
- Corrosion resistance
- light-diffusing properties
- Reinforcement
- Desiccant
- stabilizer
- Thickening
- Anti-caking
- Enhanced adsorbency
Use
Fumed silica is mainly used in coatings, paints, adhesives, sealants, Agriculture and lawn care, composites, food additives, pharmaceuticals, printing, packaging, gel-cell batteries, cosmetics, toothpaste, …
Packaging
Fumed silica is available in 10kg craft bag.
Arpadis is one of the largest chemical distributors in Europe.
Arpadis operates the storage, transport, export & import formalities of Fumed Silica globally.
