What is the use of Aerosil?
What is the use of Aerosil?
AEROSIL® 150 Low-medium surface area hydrophilic fumed silica. It is particularly popular in silicone sealant and rubber formulations as it improves mechanical reinforcement and imparts pseudoplasticity/thixotropy.
What is Aerosil silica?
Aerosil® is a colloidal form of silica that is a very light and fluffy powder. It is made by burning silicon tetrachloride in a hydrogen-oxygen furnace. This produces spherical particles; the particle size can be controlled and varying grades are available ranging in size from 4 to 25 micrometers.
Is Aerosil toxic?
No dangerous reaction known under conditions of normal use. Stable under recommended storage conditions.
Is Aerosil fumed silica?
AEROSIL® 200 is a hydrophilic fumed silica with a specific surface area of 200 m2/g. Rheology and thixotropy control of liquid systems, binders, polymers, etc.
Why is Aerosil added to tablet?
in tablet formulations. For example, Wai et al (1966), Lerk & Bolhius (1977) and Ragnarsson et al(l979) have shown that the presence of Aerosil in a tablet formula- tion reduces their disintegration and dissolution times while its lubricant property in powder mixtures has been reported by York (1975).
Is Aerosil a lubricant?
AEROSIL® Fumed Silica – Lubricating Grease Applications Non-technical overview flyer illustrating which grades of AEROSIL® are most suited to grease formulation, differentiated by application field and base oil.
What is the chemical name of Aerosil?
|Brand Name||Chemical Name/Formula||Average Particle Size|
|Aerosil 200||Amorphous colloidal silicon dioxide (silica) SiO2||12 nm (primary particles)|
|Sylysia 320||3.2 µm|
|Sylysia 350||3.9 µm|
|Sylysia 550||3.9 µm|
Is silica the same as silicon dioxide?
Silica is a chemical compound also known as silicon dioxide or silox. The chemical formula for silicon is SiO2. Silica may be found in many forms of nature.
Is fumed silica poisonous?
The general answer is “no”, fumed silica is not a dangerous material. Fumed silica is an non-toxic non-harmful material. It is not combustible nor explosive. In fact fumed silica has been applied in cosmetic, food and drugs for years.
Is fumed silica harmful?
* Silica, Amorphous (Fume) can irritate the eyes on contact. Repeated exposure can damage the eyes. * High exposure to Silica, Amorphous (Fume) can cause a flu-like illness with headache, fever, chills, aches, chest tightness and cough. * Repeated exposure to Silica, Amorphous (Fume) can cause lung damage (fibrosis).
How is colloidal silica made?
In the most general terms colloidal silica is a dispersion of amorphous silicon dioxide (silica) particles in water. These amorphous silica particles are produced by polymerizing silica nuclei from silicate solutions under alkaline conditions to form nanometer sized silica sols with high surface area.