AMORPHOUS SILICA

Amorphous Silica is a non-crystalline form of silicon dioxide characterized by a disordered three-dimensional network of silicon and oxygen atoms.
Amorphous Silica functions as a rheology modifier, reinforcing filler, anti-caking agent, free-flow aid, matting agent, adsorbent, carrier, desiccant, polishing agent, filtration aid, and catalyst support.
Amorphous Silica is widely used in coatings, adhesives, sealants, rubber, plastics, food processing, pharmaceuticals, cosmetics, printing inks, agriculture, chromatography, catalysts, electronics, and industrial processing.

CAS Number: 7631-86-9; certain manufacturing forms may also be associated with more specific identifiers
EC Number: 231-545-4; some specialized forms or registrations may use additional list numbers
Molecular Formula: SiO2
Molecular Weight: 60.084 g/mol

Synonyms: Amorphous Silica, Silica Amorphous, Amorphous Silicon Dioxide, Silicon Dioxide Amorphous, Non-Crystalline Silica, Synthetic Amorphous Silica, SAS, Silicon Dioxide, Silica, Silicic Anhydride, Silicic Acid Anhydride, Anhydrous Silica, Hydrated Silica, Synthetic Silica, Chemically Prepared Silica, Highly Dispersed Silica, Colloidal Silicon Dioxide, Colloidal Silica, Silica Sol, Fumed Silica, Pyrogenic Silica, Pyrogenic Amorphous Silica, Precipitated Silica, Wet-Process Silica, Silica Gel, Amorphous Silica Gel, Micronized Silica, Porous Silica, Mesoporous Silica, Hydrophilic Silica, Hydrophobic Silica, Surface-Treated Silica, Silanized Silica, Silicon Dioxide E551, Food-Grade Silicon Dioxide, Pharmaceutical Colloidal Silicon Dioxide, Light Anhydrous Silicic Acid, Highly Dispersed Silicon Dioxide, Aerosil-Type Silica, CAB-O-SIL-Type Silica, Anti-Caking Silica, Matting Silica, Rheological Silica, Reinforcing Silica, Desiccant Silica, Chromatographic Silica, Silica Carrier, Silica Adsorbent, Silica Thickener

APPLICATIONS

Amorphous Silica is used as a rheology modifier in liquid coating systems.
Amorphous Silica is used to increase viscosity in solvent-borne coatings.
Amorphous Silica is used to increase viscosity in compatible waterborne coatings.
Amorphous Silica is used to create thixotropic flow behavior in coating formulations.

Amorphous Silica is used to improve sag resistance during vertical coating application.
Amorphous Silica is used to reduce dripping from coated edges and complex geometries.
Amorphous Silica is used to support the application of thick coating layers.
Amorphous Silica is used to maintain film thickness on vertical and overhead surfaces.

Amorphous Silica is used as an anti-settling agent in pigmented coatings.
Amorphous Silica is used to reduce sedimentation of dense inorganic pigments.
Amorphous Silica is used to suspend fillers and extenders during storage.
Amorphous Silica is used to improve redispersibility after prolonged storage.

Amorphous Silica is used in industrial protective coatings.
Amorphous Silica is used in corrosion-resistant primers.
Amorphous Silica is used in epoxy intermediate coatings.
Amorphous Silica is used in durable industrial topcoats.

Amorphous Silica is used in epoxy coatings.
Amorphous Silica is used to control the rheology of two-component epoxy formulations.
Amorphous Silica is used to improve the anti-sag performance of high-build epoxy coatings.
Amorphous Silica is used to reinforce selected cured epoxy systems.

Amorphous Silica is used in polyurethane coatings.
Amorphous Silica is used to modify viscosity in one- and two-component polyurethane systems.
Amorphous Silica is used to improve vertical hold in polyurethane finishes.
Amorphous Silica is used in clear polyurethane coatings when a suitable low-haze grade is selected.

Amorphous Silica is used in acrylic coatings.
Amorphous Silica is used in solvent-borne acrylic lacquers.
Amorphous Silica is used in waterborne acrylic dispersions after compatibility testing.
Amorphous Silica is used to improve storage stability in pigmented acrylic formulations.

Amorphous Silica is used in alkyd coatings.
Amorphous Silica is used to suspend pigments in long-oil and short-oil alkyd systems.
Amorphous Silica is used to control sagging during brush and spray application.
Amorphous Silica is used to improve the body of industrial alkyd paints.

Amorphous Silica is used in polyester coatings.
Amorphous Silica is used in unsaturated-polyester coating and resin systems.
Amorphous Silica is used to increase thixotropy in polyester gel coats.
Amorphous Silica is used to reduce drainage from curved composite surfaces.

Amorphous Silica is used in marine coatings.
Amorphous Silica is used to prevent pigment settling in marine primers.
Amorphous Silica is used to improve sag resistance in thick marine coating films.
Amorphous Silica is used in marine systems requiring controlled rheology and surface durability.

Amorphous Silica is used in automotive coatings.
Amorphous Silica is used in primers, surfacers, basecoats, and clearcoat formulations.
Amorphous Silica is used to adjust flow without excessive loss of vertical stability.
Amorphous Silica is used in automotive refinishing products after appearance testing.

Amorphous Silica is used in coil coatings.
Amorphous Silica is used to modify application rheology on continuous coating lines.
Amorphous Silica is used to improve pigment suspension in metal-coating formulations.
Amorphous Silica is used in coil finishes after evaluating gloss and surface smoothness.

Amorphous Silica is used in powder coatings as a free-flow additive.
Amorphous Silica is used to reduce agglomeration of powder-coating particles.
Amorphous Silica is used to improve powder transport and fluidization.
Amorphous Silica is used to improve the consistency of powder application.

Amorphous Silica is used as an external additive in powder coatings.
Amorphous Silica is used to reduce caking during storage.
Amorphous Silica is used to improve electrostatic powder handling.
Amorphous Silica is used to maintain flow after exposure to moderate humidity.

Amorphous Silica is used as a matting agent in coatings.
Amorphous Silica is used to reduce surface gloss by increasing microscopic surface roughness.
Amorphous Silica is used in matte and semi-matte clear coatings.
Amorphous Silica is used in pigmented coatings requiring controlled gloss levels.

Amorphous Silica is used in wood coatings as a matting additive.
Amorphous Silica is used in furniture lacquers.
Amorphous Silica is used in parquet and flooring finishes.
Amorphous Silica is used in wood coatings requiring a uniform low-gloss appearance.

Amorphous Silica is used in radiation-cured coatings.
Amorphous Silica is used in ultraviolet-cured clear and pigmented systems.
Amorphous Silica is used to provide matting in coatings with limited film shrinkage.
Amorphous Silica is used in electron-beam-cured formulations after dispersion testing.

Amorphous Silica is used in printing inks.
Amorphous Silica is used to control ink viscosity and thixotropy.
Amorphous Silica is used to suspend pigments in liquid ink systems.
Amorphous Silica is used to improve storage stability and print consistency.

Amorphous Silica is used in screen-printing inks.
Amorphous Silica is used to reduce ink flow through the screen when the system is at rest.
Amorphous Silica is used to promote controlled flow during the printing stroke.
Amorphous Silica is used to improve edge definition in suitable formulations.

Amorphous Silica is used in gravure and flexographic inks.
Amorphous Silica is used to adjust low-shear viscosity.
Amorphous Silica is used to reduce pigment sedimentation.
Amorphous Silica is used in overprint varnishes when suitable particle size and transparency are required.

Amorphous Silica is used in adhesives.
Amorphous Silica is used to provide rheology control in structural adhesives.
Amorphous Silica is used to prevent adhesive sagging on vertical surfaces.
Amorphous Silica is used to improve gap-filling performance.

Amorphous Silica is used in epoxy adhesives.
Amorphous Silica is used to increase the body of two-component epoxy adhesives.
Amorphous Silica is used to reduce filler settling in filled adhesive systems.
Amorphous Silica is used to reinforce selected cured epoxy bonds.

Amorphous Silica is used in polyurethane adhesives.
Amorphous Silica is used to control bead shape during dispensing.
Amorphous Silica is used to reduce slumping before cure.
Amorphous Silica is used to maintain adhesive placement on inclined surfaces.

Amorphous Silica is used in acrylic adhesives.
Amorphous Silica is used in reactive acrylic and methacrylate adhesive systems.
Amorphous Silica is used to control application viscosity.
Amorphous Silica is used to improve storage uniformity in filled adhesive formulations.

Amorphous Silica is used in silicone adhesives.
Amorphous Silica is used to reinforce cured silicone networks.
Amorphous Silica is used to increase tensile and tear properties in suitable silicone systems.
Amorphous Silica is used to control extrusion and application behavior.

Amorphous Silica is used in pressure-sensitive adhesives.
Amorphous Silica is used to adjust cohesive strength and rheology.
Amorphous Silica is used to reduce excessive cold flow.
Amorphous Silica is used after evaluating its effect on tack, peel, and transparency.

Amorphous Silica is used in hot-melt adhesives.
Amorphous Silica is used to modify melt rheology.
Amorphous Silica is used to reduce filler and pigment separation.
Amorphous Silica is used in hot-melt systems after evaluating processing temperature and dispersion.

Amorphous Silica is used in sealants.
Amorphous Silica is used to provide sag resistance in construction sealants.
Amorphous Silica is used to control extrusion force and bead stability.
Amorphous Silica is used to improve the storage stability of filled sealant compounds.

Amorphous Silica is used in silicone sealants.
Amorphous Silica is used as a reinforcing filler in room-temperature-vulcanizing silicone.
Amorphous Silica is used to improve mechanical strength in silicone elastomers.
Amorphous Silica is used to adjust flow in self-leveling and non-sag silicone grades.

Amorphous Silica is used in polyurethane sealants.
Amorphous Silica is used in polysulfide sealants.
Amorphous Silica is used in hybrid silane-terminated sealants.
Amorphous Silica is used to control rheology in construction and automotive sealing materials.

Amorphous Silica is used in silicone rubber.
Amorphous Silica is used as a reinforcing filler in high-temperature-vulcanizing silicone rubber.
Amorphous Silica is used as a reinforcing filler in liquid silicone rubber.
Amorphous Silica is used to improve tensile strength, tear resistance, and dimensional stability.

Amorphous Silica is used in transparent silicone rubber.
Amorphous Silica is used when reinforcement is required with limited loss of optical clarity.
Amorphous Silica is used in silicone molded articles.
Amorphous Silica is used in silicone profiles, tubing, seals, and gaskets.

Amorphous Silica is used in cable compounds.
Amorphous Silica is used in silicone-insulated electrical cables.
Amorphous Silica is used to improve mechanical performance in cable elastomers.
Amorphous Silica is used to control the rheology of cable gels.

Amorphous Silica is used in natural-rubber compounds.
Amorphous Silica is used as a reinforcing or semi-reinforcing filler.
Amorphous Silica is used to improve selected mechanical and dynamic properties.
Amorphous Silica is used after suitable coupling-agent and cure-system optimization.

Amorphous Silica is used in synthetic rubber.
Amorphous Silica is used in styrene-butadiene rubber.
Amorphous Silica is used in nitrile rubber.
Amorphous Silica is used in ethylene-propylene-diene rubber.

Amorphous Silica is used in tire compounds.
Amorphous Silica is used in passenger-car tire tread formulations.
Amorphous Silica is used to improve wet-grip and rolling-resistance balance in suitable compounds.
Amorphous Silica is used with organosilane coupling agents in reinforced rubber systems.

Amorphous Silica is used in technical rubber goods.
Amorphous Silica is used in hoses, belts, seals, footwear, and molded rubber products.
Amorphous Silica is used to improve hardness and abrasion resistance.
Amorphous Silica is used to modify dynamic and processing behavior.

Amorphous Silica is used in shoe-sole compounds.
Amorphous Silica is used in translucent and colored rubber footwear.
Amorphous Silica is used to reinforce rubber without the black coloration associated with carbon black.
Amorphous Silica is used after evaluating wear resistance and flex performance.

Amorphous Silica is used in plastics.
Amorphous Silica is used as an anti-blocking additive in polymer films.
Amorphous Silica is used to reduce adhesion between adjacent film layers.
Amorphous Silica is used to improve film handling during winding and converting.

Amorphous Silica is used in polyethylene films.
Amorphous Silica is used in polypropylene films.
Amorphous Silica is used in packaging-film masterbatches.
Amorphous Silica is used to control blocking without excessive haze or surface roughness.

Amorphous Silica is used as a free-flow additive in plastic powders.
Amorphous Silica is used to reduce caking of polymer granules and powders.
Amorphous Silica is used to improve feeding into extrusion equipment.
Amorphous Silica is used to improve dry blending of polymer additives.

Amorphous Silica is used in thermoset composites.
Amorphous Silica is used to modify the rheology of unsaturated-polyester resins.
Amorphous Silica is used in vinyl-ester composite systems.
Amorphous Silica is used to control resin drainage from reinforcing fibers.

Amorphous Silica is used in laminating resins.
Amorphous Silica is used in fiberglass-reinforced components.
Amorphous Silica is used in wind-turbine blade adhesives and composites.
Amorphous Silica is used to maintain resin placement during composite assembly.

Amorphous Silica is used in casting resins.
Amorphous Silica is used to reduce settling of mineral fillers.
Amorphous Silica is used to modify shrinkage and rheological behavior.
Amorphous Silica is used in electrical encapsulation systems after dielectric testing.

Amorphous Silica is used in lubricating greases.
Amorphous Silica is used as a non-soap thickener in selected grease formulations.
Amorphous Silica is used to immobilize mineral and synthetic base oils.
Amorphous Silica is used to provide temperature-stable rheology in compatible lubricants.

Amorphous Silica is used in silicone greases.
Amorphous Silica is used to thicken polydimethylsiloxane fluids.
Amorphous Silica is used to produce translucent or white specialty greases.
Amorphous Silica is used in electrical, laboratory, and mechanical lubricant formulations.

Amorphous Silica is used in cable gels.
Amorphous Silica is used to control flow and prevent drainage from cable assemblies.
Amorphous Silica is used to suspend additives in nonaqueous insulating gels.
Amorphous Silica is used to provide shear-thinning application behavior.

Amorphous Silica is used as an anti-caking agent in food-grade powdered products.
Amorphous Silica is used to improve the free flow of seasoning blends.
Amorphous Silica is used to reduce clumping in powdered ingredients.
Amorphous Silica is used only in food grades meeting applicable purity and use requirements.

Amorphous Silica is used in powdered salt and spice formulations.
Amorphous Silica is used in powdered drink mixes.
Amorphous Silica is used in dry flavor preparations.
Amorphous Silica is used to maintain flow during packaging and dispensing.

Amorphous Silica is used as a carrier for flavors.
Amorphous Silica is used as a carrier for vitamins and other food ingredients.
Amorphous Silica is used to convert selected liquid ingredients into free-flowing powders.
Amorphous Silica is used to improve the distribution of low-dose ingredients.

Amorphous Silica is used as a stabilizer in beer processing where legally permitted.
Amorphous Silica is used to adsorb haze-forming proteins.
Amorphous Silica is used to improve colloidal stability in beverages.
Amorphous Silica is used in beverage processing only with grades approved for that purpose.

Amorphous Silica is used in edible-oil purification.
Amorphous Silica is used to adsorb soaps, phospholipids, and trace contaminants.
Amorphous Silica is used to improve filtration during oil refining.
Amorphous Silica is used in vegetable-oil processing after dosage optimization.

Amorphous Silica is used in biodiesel purification.
Amorphous Silica is used to remove residual soaps and polar impurities.
Amorphous Silica is used as an adsorbent during dry-washing processes.
Amorphous Silica is used to support improved fuel clarity and stability.

Amorphous Silica is used in pharmaceutical tablets.
Amorphous Silica is used as a glidant to improve powder flow.
Amorphous Silica is used to improve uniform die filling during tableting.
Amorphous Silica is used to reduce adhesion of powders to processing equipment.

Amorphous Silica is used in pharmaceutical capsules.
Amorphous Silica is used to improve the flow of capsule-fill blends.
Amorphous Silica is used as an adsorbent for selected liquid ingredients.
Amorphous Silica is used only in pharmacopoeial grades meeting applicable specifications.

Amorphous Silica is used as a pharmaceutical carrier.
Amorphous Silica is used to adsorb oils and low-melting active ingredients.
Amorphous Silica is used to convert liquid or sticky ingredients into manageable powders.
Amorphous Silica is used in solid-dosage development after dissolution and stability testing.

Amorphous Silica is used in semisolid pharmaceutical preparations.
Amorphous Silica is used as a suspending and thickening agent.
Amorphous Silica is used to structure nonaqueous gels.
Amorphous Silica is used in topical products after grade and compatibility evaluation.

Amorphous Silica is used in cosmetics.
Amorphous Silica is used as an absorbent in facial powders.
Amorphous Silica is used to reduce greasy skin feel.
Amorphous Silica is used to improve the spread and sensory finish of cosmetic products.

Amorphous Silica is used in color cosmetics.
Amorphous Silica is used in foundations, blushes, eyeshadows, and loose powders.
Amorphous Silica is used to improve pigment dispersion and powder flow.
Amorphous Silica is used to create soft-focus and texture-modifying effects with suitable grades.

Amorphous Silica is used in skin-care formulations.
Amorphous Silica is used to control viscosity in anhydrous gels.
Amorphous Silica is used to suspend particles in cosmetic oils.
Amorphous Silica is used to modify texture and reduce oiliness.

Amorphous Silica is used in sunscreen formulations.
Amorphous Silica is used as a carrier for ultraviolet-filter ingredients.
Amorphous Silica is used to modify sensory properties.
Amorphous Silica is used to improve dispersion and reduce tack in compatible systems.

Amorphous Silica is used in deodorants and antiperspirants.
Amorphous Silica is used as an absorbent and flow aid.
Amorphous Silica is used to improve the handling of powdered active ingredients.
Amorphous Silica is used to modify the consistency of anhydrous sticks and suspensions.

Amorphous Silica is used in toothpaste.
Amorphous Silica is used as a controlled abrasive.
Amorphous Silica is used as a thickening and structuring agent.
Amorphous Silica is used to provide cleaning performance while controlling enamel abrasion.

Amorphous Silica is used in transparent toothpaste.
Amorphous Silica is used in opaque toothpaste formulations.
Amorphous Silica is used to suspend flavor, active, and polishing ingredients.
Amorphous Silica is used in oral-care products only in appropriate high-purity grades.

Amorphous Silica is used in powdered detergents.
Amorphous Silica is used as an anti-caking and flow-improving additive.
Amorphous Silica is used as a carrier for fragrances and liquid surfactants.
Amorphous Silica is used to improve dosing from consumer and industrial packages.

Amorphous Silica is used in household cleaning powders.
Amorphous Silica is used to maintain uniform distribution of ingredients.
Amorphous Silica is used to absorb low quantities of oily components.
Amorphous Silica is used to reduce clumping during storage.

Amorphous Silica is used in plant-protection formulations.
Amorphous Silica is used as a carrier for active ingredients.
Amorphous Silica is used as a free-flow aid in agricultural powders and granules.
Amorphous Silica is used to modify the rheology of oil-based crop-protection formulations.

Amorphous Silica is used in suspension concentrates.
Amorphous Silica is used to reduce settling of active particles.
Amorphous Silica is used to improve redispersibility.
Amorphous Silica is used after evaluating sprayability and biological performance.

Amorphous Silica is used in seed-treatment formulations.
Amorphous Silica is used to improve powder flow and active-ingredient distribution.
Amorphous Silica is used as a carrier for colorants and treatment agents.
Amorphous Silica is used in agricultural formulations according to applicable regulations.

Amorphous Silica is used in animal-feed premixes where approved.
Amorphous Silica is used as an anti-caking and carrier material.
Amorphous Silica is used to improve the distribution of vitamins and trace ingredients.
Amorphous Silica is used only in feed grades meeting regional requirements.

Amorphous Silica is used as a desiccant in silica-gel form.
Amorphous Silica is used to adsorb water vapor from enclosed spaces.
Amorphous Silica is used in packaging for moisture-sensitive products.
Amorphous Silica is used in reusable or indicating desiccant systems after grade selection.

Amorphous Silica is used in pharmaceutical and diagnostic packaging.
Amorphous Silica is used in electronic-component packaging.
Amorphous Silica is used in footwear, textile, and consumer-goods packaging.
Amorphous Silica is used to reduce moisture-related degradation during storage.

Amorphous Silica is used as an adsorbent in chromatography.
Amorphous Silica is used as the stationary phase in column chromatography.
Amorphous Silica is used in thin-layer chromatography.
Amorphous Silica is used in flash chromatography for organic-compound separation.

Amorphous Silica is used as a support for bonded chromatographic phases.
Amorphous Silica is used to manufacture C18, C8, amino, cyano, and other modified stationary phases.
Amorphous Silica is used in high-performance liquid chromatography.
Amorphous Silica is used where controlled pore size and surface chemistry are required.

Amorphous Silica is used as a catalyst support.
Amorphous Silica is used to disperse active metals and catalytic compounds.
Amorphous Silica is used to provide high surface area and controlled porosity.
Amorphous Silica is used in chemical, petrochemical, and renewable-fuel processes.

Amorphous Silica is used in supported polymerization catalysts.
Amorphous Silica is used as a carrier for olefin-polymerization catalyst systems.
Amorphous Silica is used to control catalyst morphology and distribution.
Amorphous Silica is used after drying and surface conditioning to defined specifications.

Amorphous Silica is used as a catalyst and enzyme carrier.
Amorphous Silica is used for immobilization of selected biological and chemical catalysts.
Amorphous Silica is used in porous support systems.
Amorphous Silica is used after pore-size and surface-functionality optimization.

Amorphous Silica is used as a filtration aid.
Amorphous Silica is used to improve removal of suspended particles from liquids.
Amorphous Silica is used to create a permeable filter cake.
Amorphous Silica is used in beverage, chemical, oil, and industrial filtration processes.

Amorphous Silica is used in colloidal-silica binders.
Amorphous Silica is used in waterborne inorganic coatings.
Amorphous Silica is used to improve hardness and abrasion resistance.
Amorphous Silica is used as a binder or co-binder for mineral and refractory particles.

Amorphous Silica is used in investment casting.
Amorphous Silica is used as a binder in ceramic-shell slurries.
Amorphous Silica is used to suspend refractory flour.
Amorphous Silica is used to improve shell strength after drying and firing.

Amorphous Silica is used in refractory formulations.
Amorphous Silica is used to bind ceramic particles.
Amorphous Silica is used in castables, coatings, and refractory molds.
Amorphous Silica is used after evaluating high-temperature phase development.

Amorphous Silica is used in ceramics.
Amorphous Silica is used as a binder and surface modifier in ceramic processing.
Amorphous Silica is used to improve green strength.
Amorphous Silica is used in ceramic coatings and specialty bodies.

Amorphous Silica is used in precision polishing.
Amorphous Silica is used in colloidal-silica polishing slurries.
Amorphous Silica is used to polish silicon wafers.
Amorphous Silica is used in chemical-mechanical planarization formulations.

Amorphous Silica is used in optical-glass polishing.
Amorphous Silica is used to polish glass, quartz, and selected ceramic surfaces.
Amorphous Silica is used in precision-finishing slurries.
Amorphous Silica is used after particle-size and surface-purity optimization.

Amorphous Silica is used in electronics manufacturing.
Amorphous Silica is used in semiconductor-processing slurries.
Amorphous Silica is used in dielectric and encapsulation materials.
Amorphous Silica is used in high-purity applications requiring controlled trace-metal content.

Amorphous Silica is used in toner formulations.
Amorphous Silica is used as an external flow-control additive.
Amorphous Silica is used to control toner charging and powder mobility.
Amorphous Silica is used to reduce caking during storage and printing.

Amorphous Silica is used in electrophotographic developers.
Amorphous Silica is used to modify triboelectric behavior.
Amorphous Silica is used to improve transfer and cleaning performance.
Amorphous Silica is used in treated grades designed for toner-surface compatibility.

Amorphous Silica is used in paper coatings.
Amorphous Silica is used to control ink absorption.
Amorphous Silica is used to increase porosity in inkjet-receptive layers.
Amorphous Silica is used to improve print density and drying in suitable coated papers.

Amorphous Silica is used in inkjet paper.
Amorphous Silica is used to create high-surface-area receiving layers.
Amorphous Silica is used to immobilize ink colorants near the paper surface.
Amorphous Silica is used to improve image sharpness and reduce smearing.

Amorphous Silica is used in battery and energy-material processing.
Amorphous Silica is used as a rheology modifier in selected electrode slurries.
Amorphous Silica is used as a porous carrier or separator-related material in specialized systems.
Amorphous Silica is used only after electrochemical compatibility testing.

Amorphous Silica is used in thermal-insulation materials.
Amorphous Silica is used in microporous insulation panels.
Amorphous Silica is used to reduce heat transfer through highly porous structures.
Amorphous Silica is used in high-performance insulation after density and thermal-conductivity optimization.

Amorphous Silica is used in vacuum-insulation panels.
Amorphous Silica is used as a porous core material.
Amorphous Silica is used to maintain pore structure under reduced pressure.
Amorphous Silica is used in thermal packaging and building-insulation applications.

Amorphous Silica is used in specialty chemical formulations requiring high surface area.
Amorphous Silica is used to adsorb liquids and convert them into powders.
Amorphous Silica is used to carry catalysts, fragrances, oils, and active ingredients.
Amorphous Silica is used after pore volume and absorption capacity have been matched to the application.

Amorphous Silica is used in commercial formulations only after grade selection.
Amorphous Silica is selected according to surface area, particle size, porosity, and surface chemistry.
Amorphous Silica is selected according to hydrophilic or hydrophobic character.
Amorphous Silica is used after complete laboratory, processing, and storage-stability testing.

DESCRIPTION

Amorphous Silica is a non-crystalline form of silicon dioxide.
Amorphous Silica has a disordered atomic structure rather than the repeating lattice found in crystalline silica.
Amorphous Silica consists primarily of silicon and oxygen atoms.
Amorphous Silica commonly contains surface silanol groups capable of hydrogen bonding.

Amorphous Silica has the molecular formula SiO2.
Amorphous Silica has a formula weight of approximately 60.084 g/mol.
Amorphous Silica is commonly associated with CAS number 7631-86-9.
Amorphous Silica is commonly associated with EC number 231-545-4.

Amorphous Silica is a broad material category rather than one uniform commercial product.
Amorphous Silica includes fumed silica, precipitated silica, silica gel, and colloidal silica.
Amorphous Silica may also include fused or vitreous non-crystalline silica under broader definitions.
Amorphous Silica properties vary substantially with production method and post-treatment.

Amorphous Silica is produced as fumed silica through high-temperature flame hydrolysis or oxidation processes.
Amorphous Silica fumed grades consist of very small primary particles fused into aggregates.
Amorphous Silica fumed grades commonly have high specific surface areas.
Amorphous Silica fumed grades are widely used for rheology control and reinforcement.

Amorphous Silica is produced as precipitated silica through acidification of soluble silicate solutions.
Amorphous Silica precipitated grades are washed, filtered, dried, and milled.
Amorphous Silica precipitated grades can be engineered for surface area, porosity, and particle size.
Amorphous Silica precipitated grades are used in rubber, food, oral care, and industrial formulations.

Amorphous Silica is produced as silica gel through controlled gel formation.
Amorphous Silica gel grades have interconnected porous structures.
Amorphous Silica gel grades can adsorb substantial quantities of moisture or organic liquids.
Amorphous Silica gel grades are used as desiccants, adsorbents, carriers, and chromatographic materials.

Amorphous Silica is produced as colloidal silica in stable aqueous dispersions.
Amorphous Silica colloidal grades contain discrete or weakly aggregated particles.
Amorphous Silica colloidal grades are stabilized by charge, pH, counterions, or surface treatment.
Amorphous Silica colloidal grades are used in polishing, binders, coatings, catalysts, and ceramic processing.

Amorphous Silica is generally supplied as a white, off-white, transparent, or gray material.
Amorphous Silica is generally odorless.
Amorphous Silica may be supplied as powder, granules, beads, gel, or liquid dispersion.
Amorphous Silica physical appearance depends on manufacturing route and product form.

Amorphous Silica is insoluble or only very slightly soluble in water as a bulk solid.
Amorphous Silica can form stable colloidal dispersions without molecular dissolution.
Amorphous Silica may dissolve slowly under strongly alkaline conditions.
Amorphous Silica reacts with hydrofluoric acid and certain highly reactive fluorine compounds.

Amorphous Silica is nonvolatile at ambient temperature.
Amorphous Silica has essentially no vapor pressure.
Amorphous Silica is noncombustible.
Amorphous Silica does not have a conventional flash point.

Amorphous Silica has a skeletal specific gravity near 2.2.
Amorphous Silica bulk density is much lower and strongly grade dependent.
Amorphous Silica porous grades may contain very high internal pore volumes.
Amorphous Silica apparent density depends on particle packing and degree of densification.

Amorphous Silica specific surface area varies from relatively low to several hundred square metres per gram.
Amorphous Silica rheological efficiency generally increases with suitable surface area and dispersion.
Amorphous Silica adsorption capacity depends on pore volume and surface chemistry.
Amorphous Silica reinforcement depends on particle structure and interaction with the polymer.

Amorphous Silica hydrophilic grades have surface silanol groups.
Amorphous Silica hydrophilic grades interact strongly with polar liquids.
Amorphous Silica hydrophobic grades are modified with silanes, siloxanes, or related treatments.
Amorphous Silica hydrophobic grades provide improved compatibility with nonpolar systems and greater water resistance.

Amorphous Silica forms three-dimensional particle networks in many liquid formulations.
Amorphous Silica networks increase viscosity at rest.
Amorphous Silica networks can break down under shear and rebuild after shear is removed.
Amorphous Silica therefore provides useful thixotropic and anti-sag behavior.

Amorphous Silica must be properly dispersed to achieve maximum rheological performance.
Amorphous Silica may remain agglomerated when insufficient mixing energy is applied.
Amorphous Silica performance may decline when the surface is completely wetted by strongly interacting additives.
Amorphous Silica dosage and incorporation order should be optimized for each formulation.

Amorphous Silica can reinforce elastomers through filler-polymer interactions.
Amorphous Silica reinforcement can improve tensile strength and tear resistance.
Amorphous Silica can increase hardness and modulus.
Amorphous Silica can also increase compound viscosity and processing energy.

Amorphous Silica can adsorb water, oils, surfactants, and other liquids.
Amorphous Silica adsorption behavior depends on pore structure and surface treatment.
Amorphous Silica can convert small quantities of liquid into free-flowing powders.
Amorphous Silica can also remove unwanted polar impurities from process streams.

Amorphous Silica functions as an anti-caking agent by separating powder particles.
Amorphous Silica absorbs surface moisture and reduces liquid bridging.
Amorphous Silica reduces cohesive forces between fine particles.
Amorphous Silica improves powder flow when used at an optimized concentration.

Amorphous Silica functions as a matting agent by creating microscopic surface irregularities.
Amorphous Silica matting efficiency depends on particle size and pore volume.
Amorphous Silica can affect film clarity, viscosity, and scratch resistance.
Amorphous Silica matting grades should be matched to film thickness and coating chemistry.

Amorphous Silica differs from crystalline silica in atomic arrangement and toxicological profile.
Amorphous Silica should nevertheless contain controlled levels of crystalline silica for sensitive applications.
Amorphous Silica produced or processed at high temperatures may require verification of crystalline phases.
Amorphous Silica grade-specific crystalline-silica content should be confirmed by supplier documentation.

Amorphous Silica airborne dust may irritate the eyes and respiratory tract.
Amorphous Silica fine powder should not be handled without dust controls.
Amorphous Silica occupational exposure should be minimized through enclosure and local exhaust ventilation.
Amorphous Silica should not be dry swept or dispersed using uncontrolled compressed air.

Amorphous Silica powder may accumulate electrostatic charge during transfer.
Amorphous Silica dust is generally non-explosive because the material is noncombustible.
Amorphous Silica may nevertheless carry or disperse combustible organic contaminants.
Amorphous Silica handling equipment should follow appropriate industrial grounding and housekeeping practices.

Amorphous Silica is stable under normal dry storage conditions.
Amorphous Silica hydrophilic grades readily adsorb atmospheric moisture.
Amorphous Silica should be kept in tightly closed moisture-resistant packaging.
Amorphous Silica should be protected from contamination and incompatible chemicals.

Amorphous Silica regulatory suitability depends on grade and application.
Amorphous Silica food uses require approved food-grade material.
Amorphous Silica pharmaceutical uses require appropriate compendial material.
Amorphous Silica cosmetic, feed, and food-contact uses require the relevant purity and documentation.

PROPERTIES

Chemical Name: Silicon Dioxide
Common Name: Amorphous Silica
Abbreviation: SAS for Synthetic Amorphous Silica
CAS Number: 7631-86-9
EC Number: 231-545-4
PubChem CID: 24261
Chemical Family: Silicon oxides
Chemical Type: Non-crystalline inorganic oxide
Molecular Formula: SiO2
Molecular Weight: 60.084 g/mol
Structural Character: Disordered three-dimensional silicon-oxygen network
Principal Forms: Fumed silica, precipitated silica, silica gel, and colloidal silica
Physical Forms: Powder, granules, beads, gel, or aqueous dispersion
Typical Color: White to off-white; certain natural or technical forms may appear transparent to gray
Odor: Odorless
Water Solubility: Insoluble or very slightly soluble
Organic-Solvent Solubility: Insoluble but dispersible in suitable liquids
Vapor Pressure: Approximately zero
Volatility: Nonvolatile
Combustibility: Noncombustible
Flash Point: Not applicable
Skeletal Specific Gravity: Approximately 2.2
Bulk Density: Strongly grade dependent
Specific Surface Area: Strongly grade dependent; commonly from tens to several hundred m²/g
Primary Particle Size: Grade and production-process dependent
Aggregate Size: Grade dependent
Agglomerate Size: Processing and handling dependent
Pore Volume: Grade dependent
Average Pore Diameter: Grade dependent
Moisture Content: Grade dependent
Loss on Drying: Grade dependent
Loss on Ignition: Grade dependent
pH: Grade and test-method dependent
Surface Chemistry: Hydrophilic or hydrophobically modified
Surface Functional Groups: Primarily silanol and siloxane groups
Melting or Softening Temperature: Approximately 1,710°C for bulk silicon dioxide reference data
Boiling Temperature: Approximately 2,230°C for bulk silicon dioxide reference data
NIOSH Recommended Exposure Limit: 6 mg/m³ as an 8-hour time-weighted average for amorphous silica
NIOSH IDLH Value: 3,000 mg/m³
Primary Functions: Rheology control, reinforcement, anti-settling, anti-sagging, anti-caking, free-flow improvement, matting, adsorption, carrying, desiccation, polishing, and filtration
Primary Markets: Coatings, adhesives, sealants, rubber, plastics, food, pharmaceuticals, cosmetics, agriculture, catalysts, electronics, chromatography, and industrial processing
Crystalline-Silica Content: Grade dependent and subject to application-specific limits
Storage Conditions: Cool and dry conditions in sealed moisture-resistant packaging
Shelf Life: Grade and manufacturer dependent
Regulatory Suitability: Grade, region, purity, particle characteristics, and intended application dependent

FIRST AID

Inhalation:
Move the affected person to fresh air.
Obtain medical advice if coughing, breathing difficulty, or irritation persists.

Skin Contact:
Wash the affected area with soap and water.
Seek medical advice if persistent irritation develops.

Eye Contact:
Rinse cautiously with clean water for at least 15 minutes.
Remove contact lenses if easy to do and obtain medical attention if discomfort continues.

Ingestion:
Rinse the mouth and drink water if the person is conscious.
Obtain medical advice after significant ingestion or if symptoms develop.

Note to Physicians:
Treat symptomatically and provide supportive care.
Review the grade-specific SDS and possible crystalline-silica content.

HANDLING AND STORAGE

Handling:
Avoid generating or inhaling dust and wear gloves and safety glasses.
Use careful transfer methods and keep powder-handling equipment closed where practical.

Ventilation:
Provide effective local exhaust at filling, mixing, and transfer points.
Use suitable particulate respiratory protection when dust cannot be adequately controlled.

Storage:
Store in tightly sealed original packaging in a cool and dry area.
Protect the material from moisture, contamination, and incompatible fluorinating chemicals.

Spill and Leak Procedures:
Collect spilled powder using a HEPA-filtered vacuum or dust-controlled mechanical method.
Avoid dry sweeping, compressed-air cleaning, and uncontrolled release into drains.

Handling Precautions:
Confirm that the selected grade meets applicable crystalline-silica and regulatory requirements.
Follow the current product-specific technical data sheet and safety data sheet.