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Fumed silica information


Fumed silica with surface area of 130 m2/g

Fumed silica (CAS number 112945-52-5), also known as pyrogenic silica because it is produced in a flame, consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles which then agglomerate into tertiary particles. The resulting powder has an extremely low bulk density and high surface area. Its three-dimensional structure results in viscosity-increasing, thixotropic behavior when used as a thickener or reinforcing filler.[1]

  1. ^ Flörke, Otto W.; Graetsch, Heribert A.; Brunk, Fred; Benda, Leopold; Paschen, Siegfried; Bergna, Horacio E.; Roberts, William O.; Welsh, William A.; Libanati, Cristian; Ettlinger, Manfred; Kerner, Dieter; Maier, Monika; Meon, Walter; Schmoll, Ralf; Gies, Hermann; Schiffmann, Dietmar (15 April 2008). "Silica". Ullmann's Encyclopedia of Industrial Chemistry: a23_583.pub3. doi:10.1002/14356007.a23_583.pub3. ISBN 978-3527306732.

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Fumed silica

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Fumed silica (CAS number 112945-52-5), also known as pyrogenic silica because it is produced in a flame, consists of microscopic droplets of amorphous...

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Silica fume

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and fields of application of fumed silica are all different from those of silica fume. The first testing of silica fume in Portland-cement-based concretes...

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Silicon dioxide

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FLO-GARD Fossil flour Fumed silica Fumed silicon dioxide HI-SEL LO-VEL Ludox Nalcoag Nyacol Santocel Silica Silica aerogel Silica, amorphous Silicic anhydride...

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Hydrophobic silica

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polydimethylsiloxane chains. Hydrophobic silica can be processed in different ways; such as fumed silica, precipitated silica, and aerosol assisted self assembly...

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Precipitated silica

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Pak Chromical Ltd., (PCL) Colloidal silica Fumed silica Hydrophobic silica Silica gel Otto W. Flörke, et al. "Silica" in Ullmann's Encyclopedia of Industrial...

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Fume

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French wine grape Sauvignon blanc Silica fume, a fine-grain, thin, and very high surface area silica Fifi La Fume, a purple skunks teen character from...

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Silicone grease

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silicone oil is polydimethylsiloxane (PDMS) and the thickener is amorphous fumed silica. Using this formulation, silicone grease is a translucent white viscous...

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Salt bridge

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liquid salt bridge), filter paper bridges, porous frit salt bridges, fumed-silica, and agar gel salt bridges. The following sections will explore in greater...

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Thickening agent

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resulting increase in viscosity is large compared to the quantity of silica added. Fumed silica is generally accepted as safe as a food additive and is frequently...

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Excipient

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reduce wall friction. Examples include silica gel, fumed silica, talc, and magnesium carbonate. However, some silica gel glidants such as Syloid(R) 244 FP...

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Polymer clay

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give it this property, such as aminated bentonite, metallic soaps, or fumed silica. The base resin can be modified in various ways. Mineral oil, lecithin...

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Thixotropy

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shrinkage and better overall properties than by normal injection molding. Fumed silica is commonly used as a rheology agent to make otherwise low-viscous fluids...

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Silicon tetrachloride

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semiconductor industry. Silicon tetrachloride can also be hydrolysed to fumed silica. High purity silicon tetrachloride is used in the manufacture of optical...

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Toner

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powder and iron oxide; now there are mixtures that contain polypropylene, fumed silica, and various minerals for triboelectrification. Toner using plant-derived...

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Adsorption

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PMID 20686681. Cheraghian, Goshtasp (2017). "Evaluation of Clay and Fumed Silica Nanoparticles on Adsorption of Surfactant Polymer during Enhanced Oil...

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Carbon black

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such as white tennis shoes, precipitated or fumed silica has been substituted for carbon black. Silica-based fillers are also gaining market share in...

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Vacuum insulated panel

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entering the panel. A panel of a rigid, highly-porous material, such as fumed silica, aerogel, perlite, or glass fiber, to support the membrane walls against...

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Silicone rubber

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causes the curing to take place. A typical filler is fumed silica, also known as pyrogenic silica, which used to control the flow properties of the sealant...

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2001 anthrax attacks

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Anthrax is Doubted,” suggesting that the senate spores were coated with fumed silica. Two bioweapons experts that were utilized as consultants by the FBI...

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Polymethylsiloxane polyhydrate

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characterization of polymethylsiloxane hydrogel and silylated fumed silica and silica gel". Journal of Colloid and Interface Science. 308 (1): 142–156...

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Cyanoacrylate

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cyanoacrylate monomer is frequently formulated with an ingredient such as fumed silica to make it more viscous or gel-like. Formulations are available with...

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Glidant

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glidants include ascorbyl palmitate, calcium palmitate, magnesium stearate, fumed silica (colloidal silicon dioxide), starch and talc. A glidant's effect is due...

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Animatronics

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material in a thin stream or processing in a vacuum chamber prior to use. Fumed silica is used as a bulking agent for thicker coatings of the material. Polyurethane:...

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VRLA battery

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battery with a gelated electrolyte; the sulfuric acid is mixed with fumed silica, which makes the resulting mass gel like and immobile. Unlike a flooded...

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Tokuyama Corporation

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services Fresco Giclee Electronic materials: polycrystalline silicon Fumed silica SHAPAL products: aluminum nitride (powder, granules) IC chemicals and...

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Paint stripper

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conditions cellulose undergoes hydrolysis and loses effectiveness, so fumed silica is used for these instead. Another possibility is using waxes (usually...

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Nanoparticle

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"Ultraviolet aging study on bitumen modified by a composite of clay and fumed silica nanoparticles". Scientific Reports. 10 (1): 11216. Bibcode:2020NatSR...

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