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Fumed silica CAS#112945-52-5

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Fumed silica CAS#112945-52-5

Superior Rheology & Reinforcement Performance: Fumed silica effectively regulates thixotropy and viscosity of liquid systems, inhibits pigment sedimentation and coating sagging, and delivers excellent reinforcing effects for rubber and elastomers, improving their mechanical strength and service durability.


Widely Applied Functional Additive: As a universally used inorganic functional additive, it provides steady rheology control and anti-caking performance, while maintaining formulation stability and product consistency.


Versatile Multi-Industry Applications: In addition to coatings and printing inks, fumed silica is extensively adopted in rubber products, adhesives, synthetic resins, cosmetics, pharmaceuticals, food processing and packaging sealants.


Excellent Formulation Compatibility: Its inherent chemical inertness and available hydrophilic/hydrophobic modifications make it a high-value ingredient across a broad spectrum of industrial and commercial formulations.


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Product Description

Product Description of  Fumed Silica CAS#112945-52-5

Fumed silica (pyrogenic silica) is a novel, white, non-toxic, and odorless inorganic nanomaterial with an amorphous structure. Thanks to its unique physicochemical properties—such as small particle size, high specific surface area, high surface activity, and chemical stability—it exhibits excellent thickening, thixotropic, and reinforcing capabilities, offering broad application potential in the field of humanoid robotics.


Product Application of Fumed Silica CAS#112945-52-5

Widely used in various coatings, plastics, adhesives, and sealants; serves as a reinforcing agent in rubber.

Used as a raw material for manufacturing water glass, refractory materials, optical glass, optical fibers, and quartz glass apparatus; also used to produce ultrasonic components, adsorbents, etc.

Used in electronic packaging, ultra-large-scale integrated circuits, advanced ceramics, and the ink industry.

Used for bonding the glass faceplates of picture tubes, projection tubes, and oscilloscope tubes to their phosphor coatings.

Used as a dehumidifying desiccant, dehydrating agent, moisture-proofing agent, and air humidity regulator; also used for gas drying. Additionally serves as a catalyst and catalyst carrier, a reinforcing agent for silicone rubber, and a sizing agent in the textile industry.

Used in the manufacture of glass-ceramics and abrasives, oil decolorization, ferrosilicon purification, and the analytical determination of boron, arsenic, silver, etc.


Product Information

Parameters


Product Name:

Fumed   Silica

Synonyms:

acticel;SILICA GEL 7G;SILICA   GEL 8-20 MESH;SILICA GEL 12-28 MESH;SILICA GEL 100;SILICA GEL 30;SILICA GEL   60 G;WATER-IMPREGNATED SILICA GEL

CAS:

112945-52-5

MF:

O2Si

MW:

60.08

EINECS:

231-545-4

Product Categories:

UVCBs-inorganic;metal   oxide

Mol File:

112945-52-5.mol

Melting point

>1600°C

density

2.3 lb/cu.ft at   25 °C (bulk density)(lit.)

refractive index

n20/D 1.46(lit.)

solubility

Practically insoluble in   organic solvents, water, and acids, except hydrofluoric acid; soluble in hot   solutions of alkali hydroxide. Forms a colloidal dispersion with water. For   Aerosil, solubility in water is 150 mg/L at 258℃ (pH 7).

form

powder

Specific Gravity

2.2

Hydrolytic Sensitivity

5: forms reversible hydrate

Cosmetics Ingredients Functions

OPACIFYING   ABRASIVE   BULKING   VISCOSITY CONTROLLING   ANTICAKING   ABSORBENT

InChI

InChI=1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

SMILES

[Si](=O)=O

CAS DataBase Reference

112945-52-5(CAS DataBase Reference)

EPA Substance Registry System

Silica,   amorphous, fumed, cryst.-free (112945-52-5)


Safety Information


Safety Statements

24/25

WGK Germany

2

RTECS

VV7310000

TSCA

Yes

HS Code

28112290

Storage Class

13 - Non Combustible Solids


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