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Fumed Silica Powder (SiO2) from READE PDF Print E-mail

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  •  Fumed Silica Synonyms:

pyrogenic silica, fumed silica, M-5, colloidal silica, synthetic silica, alpha-crystobalite, amethyst, amorphous fumed silica, amorphous silica, cristobalite (SiO2), CAS# 65997-17-3, fossil flour, silicon dioxide (amorphous), silicon dioxide- fumed, silicon(IV) oxide, synthetic amorphous silica- fumed, silikill, sillikolloid, siloxid, synthetic amorphous silica- fumed, tridimite, tridymite, vulkasil, vulkasil S, wessalon,

  • Fumed Silica Chemical Name:

Synthetic Amorphous Silicon Dioxide, Crystalline- free  

  • Fumed Silica Chemical Formulas:

SiO2

  •  Fumed Silica Description:

Fumed silica is an extremely small particle with enormous surface area, high purity, and a tendency to form chains in the chemical manufacturing process. Particles are formed by injecting chlorosilanes, such as silicon tetrachloride, into a flame of hydrogen and air. The ensuring reaction produces fumed silica and hydrogen chloride.


  • Fumed Silica Typical Physical Properties Available:

Particles

  • Fumed Silica Nominal Physical Constants:

Molecular Weight (g/mol.)

60.08 

Density (g/cm3)

2.2 

Odor

none 

Freezing Point (°C)

1700

Boiling Point (°C)

2230 

Color

white

pH (approximately 4% silica in water)

4.0

Knoop Hardness (1200 kgf/mm2)

 

Physical State

solid powder

Vapor Pressure (@20°C)

0.01mm

Solubility In Water 

insoluble

 

  • Fumed Silica Typical Applications:

1) Fumed silica is used in laminating and gelcoat applications, and provides proper rheological control, while achieving optimum shear thinning and enhancing the end-use application.

2) Fumed silica has two primary functions. Reinforcement increases the strength of various materials, allowing them to be used in a wider number of applications in accordance with the user's exact requirements. Rheology control allows customers to tailor the viscosity of a system to their own requirements.

3) Fumed silica serves as a universal thickening agent, a thickener in milkshakes, and a anticaking agent in powdered foods. Like silica gel, it serves as a desiccant. 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, cosmetics, sealants, toiletries, food, beverages and unsaturated polyester resins.

  • Fumed Silica Typical Packaging:

Multiply paper bags, drums or supersacks

  • Fumed Silica TSCA (SARA Title III) Status:

1) Listed- No

2) Carcinogenicity: Not listed as a carcinogen By IARC, NTP, Z list or OSHA

  • Fumed Silica CAS Numbers:

1) CAS No. 112945-52-5 (Specific)

2) CAS No.  7631-86-9 (General)

  • Fumed Silica RTECS Number:

VV310000

 

 

 

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