FUMED SILICA 200

Fumed Silica 200 serves as a universal thickening agent and an anticaking agent (free-flow agent) in powders.
Fumed Silica 200 is used in cosmetics for its light-diffusing properties.
Fumed Silica 200 is used as a light abrasive, in products like toothpaste.

CAS Number: 7631‑86‑9 (also 112945‑52‑5, newer CAS for pyrogenic fumed silica) 
EC / EINECS Number: 231‑545‑4 
MDL Number: MFCD00149856
Chemical Formula: SiO₂ (synthetic amorphous silicon dioxide) 
Molecular Weight (Molar Mass of SiO₂ unit): 60.08 g/mol

SYNONYMS:
Fumed silica, Pyrogenic silica, Synthetic amorphous silica, Colloidal silicon dioxide, Fumed silicon dioxide, Aerosil 200, Fumed colloidal silica, Silicon dioxide (pyrogenic), Fumed silica, Pyrogenic silica, Synthetic amorphous silica, Colloidal silicon dioxide, Fumed silicon dioxide, Aerosil 200, Fumed colloidal silica, Silicon dioxide (pyrogenic), Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous

Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200m2 /g.
An anti-settling, thickening and anti-sagging agent, Fumed Silica 200 is generally used in the aerospace industry as a thickener for polyester and epoxy resins, gelcoats, adhesives and sealants.
Packaged in 10kg bags, Fumed Silica 200 is in stock in our warehouses and ready for dispatch.

Fumed Silica 200 is a very high-quality hydrophilic fumed silica.
Pyrogenic silicas are available in different variants and have a very high specific surface area - Fumed Silica 200 has 200 sqm/g.
Due to its high surface area, Fumed Silica 200 is used in many different ways as a filler, thickener or anti-settling agent as well as a thixotropic powder.

Fumed Silica 200's properties are particularly advantageous in liquid systems such as paints, resins and other liquids.
The quality offered here is intended for various technical applications.

Fumed Silica 200 (CAS number 7631-86-9, also 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.
Fumed Silica 200's three-dimensional structure results in viscosity-increasing, thixotropic behavior when used as a thickener or reinforcing filler.

Fumed Silica 200 is ideal for thickening, suspending, and texturizing both anhydrous and emulsion-based systems.
Fumed Silica 200 can be added directly to the oil phase during the heating process or dry blended for powder products.
Fumed Silica 200 is a Premium Rheology Modifier for Luxurious Formulations, high-performance, ultrafine powder composed of amorphous silicon dioxide particles, created through flame hydrolysis at elevated temperatures.

Renowned for its light-diffusing properties and exceptional thickening and anti-caking capabilities, Fumed Silica 200 enhances the texture, stability, and aesthetic of advanced cosmetic formulations.
This multifunctional ingredient, Fumed Silica 200, not only refines product consistency but also delivers a superior skin feel, making it an essential addition to high-end skincare, haircare, and personal care products.

Fumed Silica 200 is a hydrophilic Fumed Silica with a specific surface area of 200m2/g, and it is synthetic, hydrophilic, amorphous silica, produced via flame hydrolysis.
Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m²/g.

Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m2/g.
Fumed Silica 200 is widely usable in a broad range of applications.
Fumed Silica 200 is a pharmaceutical-grade hydrophilic fumed silica, used in both the food and pharmaceutical industries.

Fumed Silica 200 acts as an anti-caking agent, thickener, and carrier for flavors, vitamins, and other active ingredients.
Fumed Silica 200 ensures consistent flow and stability in powdered formulations.

Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m²/g.
Fumed Silica 200 is a fumed silica has similar main specifications to Aerosil 200/Cabosil M5/Wacker HDK N20/XYSIL 200.

Fumed Silica 200 (CAS numbers 7631-86-9 or 112945-52-5), also known as pyrogenic silica, is an amorphous, ultrafine silica powder produced by the high-temperature hydrolysis of chlorosilane in a hydrogen-oxygen flame.
Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200m2/g

USES and APPLICATIONS of FUMED SILICA 200:
Fumed Silica 200 serves as a universal thickening agent and an anticaking agent (free-flow agent) in powders.
Like silica gel, Fumed Silica 200 serves as a desiccant.
Fumed Silica 200 is used in cosmetics for its light-diffusing properties.

Fumed Silica 200 is used as a light abrasive, in products like toothpaste.
Other uses of Fumed Silica 200 include filler in silicone elastomer and viscosity adjustment in paints, coatings, printing inks, adhesives and unsaturated polyester resins.

Fumed Silica 200 readily forms a network structure within bitumen and enhances its elasticity
Aerosil 200 is a hydrophilic, lightweight, Fumed Silica 200 used as a thickener for polyester and epoxy resins, gel coats, adhesives, and sealants.

Fumed Silica 200 is effective for thickening resins and glues.
Fumed Silica 200 helps prevent sagging on vertical and overhead surfaces.
Applications of Fumed Silica 200: Paints and coatings, Unsaturated polyester resins, Laminating resins, Gel coats, HTV- and RTV-2K-silicone rubber, Adhesives and sealants, Cable compounds and cable gels.

Application of Fumed Silica 200: RTV silicone sealant, HTV silicone rubber, Paints and coatings, ink, pigment, Unsaturated polyester resins, Adhesive & sealant, hermal insulation material, vacuum insulation panel, and Composites& PVC, storage battery.
Fumed Silica 200 is widely usable in a broad range of applications.

End Uses of Fumed Silica 200: 1K (1 component) Coating, Plastic Coating, Powder Coating, Printing Ink, Radiation Curable Coating, Solventborne Coating, Varnishes, Waterborne Coating, Wood Coating.
Typical applications of Fumed Silica 200: sealants, RTV-1K silicone sealants, HTV-/ RTV-2K silicone rubber, plant care.

Sealing: Fumed Silica 200 with silica is a universally applicable material mix that is used for EPS blanks and also for our Agave blanks to seal air chambers or grains.
Optics: Fumed Silica 200 is transulent in itself and can add turbidity in large quantities.

Applications of Fumed Silica 200: Hydrophilic fumed silica is a highly versatile material with numerous applications thanks to its distinctive properties, such as a large surface area, low density, and water-repellent capabilities.
Silicone Sealants and Adhesives uses of Fumed Silica 200: Hydrophilic fumed silica is commonly used in silicone sealants and adhesives to enhance rheological properties, providing thixotropy (the ability to thicken and retain shape) and preventing sagging of the material.

Gel and lithium-ion Batteries: Fumed Silica 200 contributes to various aspects of battery performance, including stability, conductivity, safety, and thermal management, making it an important component in the development of advanced battery technologies.
Lubricants: Fumed Silica 200 improves the viscosity and stability of lubricants, making them more effective in extreme conditions such as high temperatures or exposure to moisture.

Oil and Gas Industry: Fumed Silica 200 serves as a thickener in drilling fluids and other formulations in the oil and gas industry, where water resistance is essential.
Fumed Silica 200 acts as a filler.

Applications of Fumed Silica 200: Paints and Coatings, RTV Silicone Sealant, HTV Silicone Rubber, Unsaturated polyester resins, Adhesive & Sealant, Thermal insulation material, Vacuum Insulation Panel, Composites & PVC, Storage Battery, Unsaturated Polyester Resin, and Pharmaceutical, food, cosmetic.

Paints, coatings & sealants: Fumed Silica 200 is used Rheology modifiers, sag prevention, reinforcement.
Silicone elastomers & adhesives: Fumed Silica 200 improves consistency, strength, curing.
Cosmetics & personal care: Fumed Silica 200 is used in lipsticks, mascara, powders, shampoos—stabilizer, opacifier, flow agent (INCI name Silica).

Pharmaceutical & food industry: Fumed Silica 200 is used free-flow agent in powders, excipient (in hydrophilic grade).
Construction & refractories: Fumed Silica 200 enhances bitumen, concrete additives, pozzolanic filler.
Laboratory / industrial: Fumed Silica 200 is used Desiccant, abrasive in toothpaste, carrier in dispersions and coatings.

Fumed Silica 200 exhibits performance characteristics such as strengthening, thickening, thixotropy, matting, UV-resistance and sterilization.
Fumed Silica 200 has small particles size, big specific surface area and high surface activity.
Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m²/g.

With Fumed Silica 200, rheology and thixotropy control of liquid systems, binders, and polymers is possible easily.
Fumed Silica 200 is also used to improve free flow and anti-caking characteristics of powders as well as an anti-settling, thickening, and anti-sagging agent.

As ingredient Fumed Silica 200 can be used in a broad variety of applications, like lipsticks, sulfate-free shampoos, mascara.
Fumed Silica 200 is listed with the INCI-name 'Silica' and holds a COSMOS certification.
Fumed Silica 200 is a hydrophilicfumed silica with a specificsurfacearea of 200 m2/g.

Fumed Silica 200 is widely usable in a broad rangeof applications.
Fumed Silica 200 is utilized across a diverse array of applications because of its versatility.
Fumed Silica 200 is effective to use in paints and coatings, unsaturated polyester resins, laminating resins, and gel coats, adhesives and sealants, printing inks, cable compounds and gels, and plant protection.

Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200m2 mg/g and an original particle size of 5- 40nm.
Fumed Silica 200 is a high purity white colloidal powder.
Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200m2/g, and it is synthetic, hydrophilic, amorphous silica, produced via flame hydrolysis.

Application of Fumed Silica 200: RTV silicone sealant, HTV silicone rubber, Paints and coatings, ink, pigment, Unsaturated polyester resins, Adhesive & sealant, Thermal insulation material, vacuum insulation panel, and Composites& PVC, storage battery.
Fumed Silica 200 is mainly used for high temperature vulcanized silicone rubber, silicone defoamer, advanced ink, powder coating, PVC resin, unsaturated polyester resin thickener, thixotropic agent, powder, watchmaking preparations, cosmetics, etc.

Fumed Silica 200 is a kind of hydrophilic fumed silica, high purity white colloidal powder.
Fumed Silica 200 is suitable for the following applications as the additive: RTV silicone rubber, Silicone Sealant and Adhesives, Paints and Coatings, Printing inks and toners, UPR, Plastics and Polymers, Compounds gels and etc.

Fumed Silica 200 is a porous functional additive with a high specific surface area ranging from 50 to 600 m²/g, widely used in various industrial applications.
Applications of Fumed Silica 200: Paints and coatings, Unsaturated polyester resins, laminating resins and gel coats, HTV and RTV – 2K – silicone rubber, Adhesives and sealants, Printing inks, Cable compounds and cable gels, and Plant protection.

Fumed Silica 200 is an anti-caking, free-flowing, gelling, suspending, dispersing and thickening agent.
Fumed Silica 200 is hydrophilic fumed silica which is used to transform cosmetic oils to highly viscous gels.
Fumed Silica 200 produces largely transparent products with a markedly pseudoplastic flow behavior.

In toothpaste formulations, whether in all-silica formulations, in carbonate pastes, or in those using phosphate abrasives, Fumed Silica 200 gives the rheological body.
Fumed Silica 200 can help increase the volume of the hair, counteracting the flattening effect of the conditioning agents.

Fumed Silica 200 prevents a premature reaction and caking of powdered colorant component (hair dyes).
Fumed Silica 200 helps improve the homogeneous distribution of the pigments in color cosmetics.

Fumed Silica 200 prevents the agglomeration of active ingredients—generally aluminum and zirconium salts (AP salts)-helping to ensure that they are evenly distributed and have an intense and long-lasting effect.

Fumed Silica 200 also avoids white residue.
Fumed Silica 200 is suggested for use in skin care, oral care, hair care (beaches, dyes, conditioners), make-up (powder, nail polish, lipstick/lip gloss) and antiperspirants & deodorants (sticks) applications.

-Uses of Fumed Silica 200:
Luxurious creams, lotions & face masks.
Hair styling products, dry shampoos & scalp treatments.
Matte finish foundations, powders & color cosmetics.
Body powders, deodorants & scrubs.

-Composite materials uses of Fumed Silica 200:
Fumed Silica 200 can be used as a filler or reinforcing material in composites for the manufacture of surfboards.
In combination with resins such as epoxy or polyester resins, Fumed Silica 200 can help to improve the strength and durability of the surfboard by adding stiffness to the material.
Surfboard applications of Fumed Silica 200: fin plugs, sealing and repairs.

-Lightweight construction uses of Fumed Silica 200:
Fumed Silica 200 can also help reduce the weight of surfboards, especially when used as a filler in lighter foam cores or agave blanks.
Lighter surfboards have better flex characteristics and offer better maneuverability.
Therefore, Fumed Silica 200 is an important part of the sealing process.

-Repairs uses of Fumed Silica 200:
Fumed Silica 200-based materials such as epoxy resin are often used for surfboard repairs.
These materials can be mixed with silica powder to form a viscous paste that can effectively repair cracks and damage to the surfboard.

Fumed Silica 200, also known as thixotropic powder, acts as a thickening agent due to its angular structure, which in high consistens turns resins into a kind of filler and thus prevents the compound from running away.

-Fumed Silica 200 is used in Paints and Coatings:
Fumed Silica 200 is mainly used in paints and coatings as thixotropic agent and anti-settling agent.
Fumed Silica 200 improves thixotropic and rheological properties of coatings and paint systems, retains original transparency of lacquers.

Furthermore, addition of Fumed Silica 200 enhances hardening of coating film, adhesion to surfaces, as well as reduces deterioration rate of the coatings and fading of materials with transparent top coating.
Besides, Fumed Silica 200 helps to prevent run-off and sag of paints applied on vertical surfaces, thus ensuring top quality leveling.
Fumed Silica 200 is used as a matting agent of lacquer systems, whereas the desired effect may be adjusted within wide ranges.

-Fumed Silica 200 is used in Adhesives and Sealants
Fumed Silica 200 is widely used in all kinds of adhesive and sealants industries, e.g. silicone sealants, PVC-plastisol sealant, polyacrylate sealant, epoxy adhesive, polyurethane adhesive, unsaturated polyester, polyurethane water-based adhesive, etc.

Fumed Silica 200 is mainly used as additives for anti-sag, rheology control and anti-settling; also used as rheology control and reinforcing agents in sealants, and improves the storage stability and processability of adhesives and sealants.

-Cosmetics and Personal Care Products uses of Fumed Silica 200:
In cosmetics, Fumed Silica 200 functions as a thickening agent in products like anti-perspirants, deodorants, and moisturizers.
Fumed Silica 200's hydrophilic properties help manage texture and prevent clumping in moisture-exposed products.

-Fumed Silica 200 is used in RTV Silicone Sealant, HTV Silicone Rubber
Fumed Silica 200 is an efficient reinforcement and rheology control additives for silicone rubber.
Fumed Silica 200 strengthens the cured rubber, increasing hardness, modulus, tensile strength and tear strength.
Unlike other reinforcing fillers, Fumed Silica 200 can be used in transparent or clear applications.

-Food and Pharmaceuticals uses of Fumed Silica 200:
Used as an anti-caking agent in powdered food products, hydrophilic Fumed Silica 200 ensures powders remain free-flowing.
Fumed Silica 200 is also employed in pharmaceuticals to prevent clumping of powdered medications.

-Fumed Silica 200 is used in Pharmaceutical, food and cosmetic
*FREE FLOW
Fumed Silica 200 improves flow for tableting and capsule filling, leading to increased production yields and tablet weight uniformity

*CAPSULE ANTI-BLOCKING
Promote high-speed filling of gelcaps by reducing adhesion of the liquid filling to the machinery.

-Paints and Coatings uses of Fumed Silica 200:
Fumed Silica 200 is incorporated into paints and coatings to improve water-repellent characteristics.
Fumed Silica 200 enhances the durability and weather resistance of exterior paints, especially in environments exposed to moisture.

PROPERTIES of FUMED SILICA 200:
Fumed Silica 200 has a very strong thickening effect.
Primary particle size of Fumed Silica 200 is 5–50 nm.
The particle of Fumed Silica 200 are non-porous and have a surface area of 50–600 m2/g.
The density of Fumed Silica 200 is 160–190 kg/m3.

KEY CHARACTERISTICS & BENEFITS of FUMED SILICA 200:
*Thickening & Rheology Control: 
Fumed Silica 200 exhibits strong thixotropic behavior—under shear becomes fluid; at rest increases viscosity—ideal for coatings, adhesives, sealants, resins.
*Anti‑caking & Flow Aid: 
Fumed Silica 200 improves free-flow in powders and prevents settling in formulations (e.g. salts, pigments).

*Reinforcement: 
Fumed Silica 200 enhances mechanical strength in HTV/RTV silicone rubbers, elastomers, composite materials, bitumen, and refractory mixes.

*Optical transparency: 
Fumed Silica 200 maintains clarity in cosmetics, coatings, adhesives due to submicron particle size.

*Thermal insulation: 
Fumed Silica 200 is used in vacuum insulation panels and microporous boards for high-temperature resistance up to ~1,000 °C while minimizing thermal conductivity.

FUNCTIONS of FUMED SILICA 200:
*Rheology and thixotropy Control
*Used as anti-settling, thickening, anti-sagging agent
*Free Flow and Suspension for Powder
*Reinforcement in Silicone Rubber
*Absorbant
*Carrier for API (Active Pharmaceutical Ingredient)
*Anti cake in powders of food & pharma

NANOPARTICLES VS MICROPARTICLES
The production of Fumed Silica 200 uses silicon tetrachloride (SiCl4), hydrogen (H2), and oxygen (O2 ) as raw materials, undergoing hydrolysis and oxidation reactions in a high-temperature flame to produce amorphous silica particles.
Primary particles -> Aggregates -> Agglomerates.

Initially, the flame reaction generates Primary Particles with a diameter of 5–50 nanometers, which are non-porous, independently distributed, and serve as the fundamental units of silica.

Subsequently, these primary particles aggregate through chemical bonding to form Aggregates measuring 100–500 nanometers, featuring a tighter structure and a branched morphology.

Finally, these aggregates further cluster through physical interactions to form Agglomerates ranging from 1–200 micrometers, appearing as loose large particle groups.

FEATURES of FUMED SILICA 200:
*Thickening and Viscosity Improvement.
When Fumed Silica 200 is added to a system, it significantly enhances the viscosity, helping the product reach a specific thickness to ensure performance, while typically not altering other properties of the system.

In coatings and adhesives, thickening can prevent material sagging or dripping during application.
Fumed Silica 200 has excellent thixotropic properties, which are especially useful in applications that require easy operation during use (where viscosity decreases under shear, making it easy to apply) but need to maintain stability after standing (where viscosity increases, preventing sagging).

For example, in coatings and gels, thixotropy prevents dripping or sagging during application while allowing smooth application and uniform coverage.

*Reinforcement.
Incorporating Fumed Silica 200 as a filler material enhances several mechanical properties of elastomers, such as modulus, elongation at break, tensile strength, and tear resistance.
Additionally, the large specific surface area of Fumed Silica 200 contributes to achieving superior transparency in elastomers.

*Anti-caking- Enhanced flow performance:
Fumed Silica 200, with its unique property of acting like ball bearings, effectively prevents lumping and clogging.
Fumed Silica 200 enhances the storage stability of powders that are highly susceptible to caking.
Additionally, Fumed Silica 200 improves flowability, addressing and preventing potential flow issues.

*Anti-settling.
Fumed Silica 200 plays a crucial role in coatings, inks, and adhesives by preventing solid particles, pigments, or fillers from settling under the influence of gravity.

This ensures consistent uniformity and stability during both storage and application.
By enhancing suspension properties, Fumed Silica 200 significantly improves the performance of liquid systems, including pigmented coatings and resin-based formulations with fillers.

BENEFITS of FUMED SILICA 200:
*Fumed Silica 200 acts as an elegant rheology modifier, improving flow and spreadability.
*Fumed Silica 200 functions as an anti-caking and anti-settling agent in powders and suspensions.
*Fumed Silica 200 absorbs excess oil from skin and scalp for a clean, matte finish.
*Fumed Silica 200 enhances moisture retention in skincare products.
*Fumed Silica 200 provides a velvety-smooth skin feel.
*Fumed Silica 200 helps maintain the homogeneity of pigments and actives in formulations.

CHARACTERISTIC of FUMED SILICA 200:
*Medium specific surface area.
*High purity.
*Aggregated structure.
*Submicron particle size.
*Low bulk density.
*Hydrophilic surface chemistry.

FUNCTIONS of FUMED SILICA 200:
Anti-Blocking Agent, Anti-Blocking Agent, Anti-Caking Agent, Anti-Caking Agent, Anti-Caking Agent, Anti-Caking Agent, Carrier, Carrier, Carrier, Carrier, Dispersant, Dispersant, Dispersant, Dispersant, Flow Improver, Flow Promoter, Reinforcement, Reinforcement Agent, Rheology Modifier.

PROPERTIES of FUMED SILICA 200:
*Rheology and thixotrophy control of liquid systems, binders, polymers, etc.
*Fumed Silica 200 is used as anti-settling, thickening and anti-sagging agent
*Reinforcement of HTV and RTV -2K silicone rubber
*Improvement of free flow and anticaking characteristics of powders
*Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m2/g.
*Engineered to optimize the performance of diverse materials, this adaptable additive excels as both a catalyst for free-flow and an inhibitor against caking in powdered substances.
*Additionally, Fumed Silica 200 functions as a viscosity enhancer, imparting a denser consistency to liquids.

KEY FEATURES of FUMED SILICA 200:
*Precise Control: 
Fumed Silica 200 facilitates optimal control over rheology and thixotropy in liquid systems, binders, polymers, and beyond.

*Multifaceted Functions: 
Fumed Silica 200 acts as a proficient anti-settling, thickening, and anti-sagging agent.

*Reinforcement: 
Fumed Silica 200 bolsters HTV- and RTV-2K silicone rubber formulations, ensuring heightened durability

*Flow Optimization: 
Fumed Silica 200 enhances the free flow properties of powdered substances, mitigating caking concerns effectively.

CHARACTERISTIC of FUMED SILICA 200:
*Medium specific surface area
*High purity
*Aggregated structure
*Submicron particle size
*Low bulk density
*Hydrophilic surface chemistry

FUNCTIONS of FUMED SILICA 200:
*Rheology and thixotropy control of liquids, binders, polymers, etc.
*Used as anti-settling, thickening, anti-sagging agent
*Free flow and suspension for powder
*Reinforcement in silicone rubber
*Adsorbant

KEY BENEFITS of FUMED SILICA 200:
*standard recommendation.
*universallyapplicable.
*good dispersability.
*Silica (> 99.8%).

PROPERTIES of FUMED SILICA 200:
*Solubility -
Fumed Silica 200 is insoluble in water, disperses in oils, alcohols, and esters.

*pH Value -
Neutral; suitable across a wide pH range.

*Melting Point -
Approx. 1713∘C.

*Usage Rate -
Typically used at 1% – 5%, up to 100% for dry blend formulations depending on product requirements.

HOW TO ADD TO FORMULATION of FUMED SILICA 200:
Heat the oil phase of your formulation using a double boiler.
Disperse Fumed Silica 200 slowly into the heated phase with consistent stirring.
Combine Fumed Silica 200 with water phase and blend using a high-shear mixer or emulsifier for uniform texture and performance.
Fumed Silica 200 is a hydrophilic fumed silica with a specific surface area of 200 m2/g.
Fumed Silica 200 is widely usable in a broad range of applications.

PROPERTIES of FUMED SILICA 200:
*Rheology and thixotropy control of liquid systems, binders, polymers, etc.
*Fumed Silica 200 is used as an anti­settling, thickening, and anti­sagging agent.
*Reinforcement of HTV­ and RTV­2K silicone rubber.
*Improvement of free flow and anticaking characteristics of powders.
*Reinforcing filler in elastomers
*Rheology control and thixotropic agent
*Anti-settling,anti-sagging, and thickening agent
*Free flow aid and anti-caking aid for powders
*High Transparency

PHYSICAL and CHEMICAL PROPERTIES of FUMED SILICA 200:
Appearance: White, odorless amorphous powder (branched chain network) 
Particle size: Primary particles ~5–50 nm; agglomerated structures form porous chains; 
BET surface area ≈ 175–225 m²/g for Aerosil 200 grade 
Bulk density: ~160–190 kg/m³ (0.16–0.19 g/cm³) 
Loss on drying: ≤ 1.5 % at 105 °C 
pH: ~3.7–4.5 in 4 % aqueous dispersion (≈ 40 g/L) 
Melting point: ~1,600 °C; Boiling / decomp: ~2,200 °C (no volatilization under normal use) 
Density (solid silica): ~2.2 g/cm³ 

Solubility: Insoluble in water or organic solvents (as inorganic silica) 
Stability: Chemically stable, non-reactive; avoid extreme heat and strong acids/bases that may degrade structure
Appearance: White amorphous powder, odorless
CAS Number / EC Number: 7631‑86‑9 (112945‑52‑5) / 231‑545‑4
Formula: SiO₂ (synthetic amorphous silica)
Particle Size: 5–50 nm primary; aggregated structure
Surface Area (BET): 175–225 m²/g (Aerosil 200 grade)

Bulk Density: ~160–190 kg/m³ (~0.16–0.19 g/cm³)
pH (4% dispersion): ~3.7–4.5
Melting / Boiling: ~1,600 °C / ~2,200 °C
Solubility: Insoluble in water and organics
Stability: Chemically stable; avoid heat/strong acids/bases
Key Properties: Thixotropy, rheology control, thickening, free-flow aid
Applications: Coatings, cosmetics, adhesives, pharmaceuticals, construction

Safety Measures: Dust control, PPE, ventilation
Storage: Dry, sealed, cool; shelf life ~2 yrs
Disposal: Inert inorganic disposal; follow local rules
Physical state: powder
Color: No data available
Odor: odorless
Melting point/freezing point: Melting point/ range: ca.1.700 °C
Initial boiling point and boiling range: 2.200 °C at 1.013,25 hPa

Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available
Flash point: Not applicable
Autoignition temperature: No data available
Decomposition temperature: > 2.000 °C
pH: 3,6 - 4,3 at 40 g/l
Viscosity: Viscosity, kinematic: No data available
Viscosity, dynamic: No data available

Water solubility: 0,001 g/l at 20 °C - insoluble
Partition coefficient: n-octanol/water: No data available
Vapor pressure: No data available
Density: No data available
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: none

Other safety information: Bulk density 0,05 g/cm3
Molecular Formula / Molecular Weight: SiO2 = 60.08
Physical State (20 deg.C): Solid
Storage Temperature: Room Temperature (Recommended in a cool and dark place, <15°C)
CAS RN: 7631-86-9
Reaxys Registry Number: 6114654
Merck Index (14): 8493
MDL Number: MFCD00149856

FIRST AID MEASURES of FUMED SILICA 200:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of FUMED SILICA 200:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of FUMED SILICA 200:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of FUMED SILICA 200:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of FUMED SILICA 200:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of FUMED SILICA 200:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available