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    Qingdao Hengda New Material Technology Co., Ltd.

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    Qingdao International Innovation Park, Qingdao, Shandong Province, China

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    Gaizhou Hengda Chemicals Co., Ltd.

    Shandong Hengda Silicon Material Technology Co., Ltd.

HENGDA-Si28 - Tetraethoxysilane

HENGDA-Si28

Tetraethoxysilane (TEOS), with the chemical formula Si(OC₂H₅)₄, is a well-known precursor in the synthesis of silica and silica-based materials. It belongs to the group of alkoxysilanes, where a silicon atom is bonded to four ethoxy (OC₂H₅) groups.
TEOS is primarily used in sol-gel processes, where it undergoes hydrolysis in the presence of water to form silanol groups (Si-OH). These silanol groups can then condense to form siloxane (Si-O-Si) bonds, leading to the formation of silica networks. This ability to form silica under controlled conditions makes TEOS a versatile material in various applications.

  • Chemical Name:

    Tetraethoxysilane

  • CAS No.

    78-10-4

  • Equivalent Name:

    TEOS

  • TE 28

Typical Properties

Appearance

Colorless Transparent Liquid

Purity(%)

≥99%

Density(ρ20), g/cm³

0.920~0.960

Molecular Weight

208.33

Refractive Index(n²⁵D)

1.3788-1.3888

Applications

Tetraethoxysilane

1.Precursor for Silica Production: TEOS is primarily used as a precursor in the production of silica and silica-based materials. It is a key starting material in the sol-gel process, where it undergoes controlled hydrolysis and condensation reactions to form silica networks.

2.Coatings and Thin Films: It is used in the manufacture of coatings and thin films on various substrates, such as glass and ceramics. These coatings can impart properties like scratch resistance and barrier protection.

Catalyst Support: TEOS can be used as a support material in catalysts due to its ability to form porous silica structures.

3.Nanotechnology: It finds applications in nanotechnology for the synthesis of silica nanoparticles and nanostructures.


Packing

25 kg, 200kg plastic or iron drum, IBC Drum

HENGDA-Si28