What is Aerosil r972?
AEROSIL® R 972 is a fumed silica aftertreated with DDS (Dimethyldichlorosilane) Hydrophobic component for thickening and reinforcement of RTV-1 K silicone sealants. Improves shelf-life of silicone sealants. Water resistant, hydrophobising of liquid systems. Rheology control of (complex) liquid systems.
Is Aerosil safe to ingest?
If accidentally swallowed, rinse mouth thoroughly with water and afterwards, drink plenty of water. In case of discomfort, obtain medical attention. No hazards which require special first aid measures.
What is the use of Aerosil?
It is used in cosmetics for its light-diffusing properties. It is used as a light abrasive, in products like toothpaste. Other uses include filler in silicone elastomer and viscosity adjustment in paints, coatings, printing inks, adhesives and unsaturated polyester resins.
Is aerosil hydrophobic or hydrophilic?
AEROSIL® 200 Key points at a glance: Hydrophilic surface with a medium-high surface area. It is one of the most widely used grades of fumed silica. Efficient pseudoplastic rheology build and thixotropic behaviour in a wide range of polar and non-polar solvents and polymers.
Why is fumed silica hydrophobic?
Treated aggregated fumed silica Hydrophobic silica can be used to treat other surfaces to become hydrophobic, this is due to the morphology of the silica particles once they adhere to their host. The silica particles then alter the surface of its host material resulting in a hydrophobic surface.
What is the chemical name of Aerosil?
Silicon dioxide
Aerosil – Names and Identifiers
| Name | Silicon dioxide |
|---|---|
| CAS | 14808-60-7 112945-52-5 60676-86-0 7631-86-9 99439-28-8 |
| EINECS | 215-683-2;238-878-4;262-373-8;231-545-4 |
| InChI | InChI=1/O2Si/c1-3-2 |
What happens if you ingest fumed silica?
* High exposure to Silica, Amorphous (Fume) can cause a flu-like illness with headache, fever, chills, aches, chest tightness and cough.
Is Aerosil fumed silica?
AEROSIL® R 974 is a hydrophobic fumed silica aftertreated with DDS (Dimethyldichlorosilane) based on a hydrophilic fumed silica with a specific surface area of 200 m2/g.
Is Aerosil A Glidant?
Colloidal silicon dioxide (trade name AEROSIL) is widely used as a glidant in the manufacture of powders, capsules, and tablets [8, 9] . The flow-enhancing effect of a new compacted, hydrophilic colloidal silicon dioxide on microcrystalline cellulose and pregelatinized starch was studied in the work of Jonat et al.
What is the difference between silica gel and fumed silica?
In contrast to silica-gel, this method of production creates negligible internal surface area, devoid of strong primary particle polymerization. Fumed silica, structurally, has no gap among particles and is weakly agglomerated together with minimal internal surface area.
What is the difference between precipitated and fumed silica?
While fumed silica is often used as a matting agent by conservators, its efficacy has been called into question. Fumed silica is produced commercially as a thickening or thixotropic agent, not as a matting agent; in contrast, precipitated silica is sold specifically as a matting agent.
What is cabosil made of?
Cab-O-Sil is an aerosol silica that can be mixed with most liquids to form a thick colloidal suspension. Also called Fumed silica, it is a very light, fluffy white powder that is made by hydrogen-oxygen furnace combustion of silicon tetrachloride.
What is Aerosil® your 972?
AEROSIL® R 972 by Evonik act as an anti-caking, free-flowing, gelling, hydrophobizing, suspending, dispersing and thickening agent. It is a hydrophobic fumed silica after-treated with DDS (Dimethyldichlorosilane) which is used to transform cosmetic oils to highly viscous gels.
Does Aerosil® r972 coating improve tablet stability?
ASAP results (not shown) of tablets with API coated with Aerosil® 200 and Aerosil® R972, respectively, also indicated that the Aerosil® R972 coating resulted in more stable tablets.
What is Aerosil or fumed silica?
These used extremely fine filler particles, a silica ‘flour’ called ‘aerosil’ or fumed silica. This material has a typical particle size of the order of 0.05 μm, one tenth of the wavelength of yellow light, and less than one hundredth of the size of previous ‘fine’ particles, hence these are sometimes referred to as ‘micro-fine’.