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Erosyl
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Erosyl has very strong viscose properties. The size of the primary particles is 5–50 nm. These particles are non-porous and have an area of 50 to 600 square meters per gram. The density is 160–190 kg/m3.
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Description
Erosyl or fumed silica CAS number 112945-52-5, also known as pyrogenic silica, because it is produced in flame، It consists of microscopic droplets of amorphous silica, composed of three-branched, chain-shaped, three-dimensional secondary particles that accumulate in tertiary particles.
In the production of pyrogenic silica nanoparticles, they are formed from the reaction of a silicon compound, generally silicon tetrachloride (SiCl4), in the flame of hydrogen and oxygen gas, and at a temperature of about °C1723 according to the following reaction:
SiCl4 + 2H2 + O2 → SiO2 + 4HCl
In pyrogenic silica, the primary particles usually join and form aggregates in the form of open chains, hence its powder is very porous and from a very low bulk density (g/)/l 20-50) has [1].
The resulting powder has a very low mass density and a large surface area. Its three-dimensional structure leads to increased viscosity, tizxropic behavior when used as a thickener or reinforcement reinforcement.
Additional information
| Weight | 10 kg |
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