chloro-dimethyl-octylsilane, CAS No. 18162-84-0

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18162-84-0

Catalog No. EBD96959

CAS 18162-84-0

Name chloro-dimethyl-octylsilane

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Basic Information

Synonyms: chloro-dimethyl-octyl-silane chloro-dimethyl-octylsilane Octyldimethylchlorosilane Chlorodimethyloctylsilane N-octyldimethylchlorosilane Silane,chlorodimethyloctyl- chlorodimethyloctyl-silan chlorooctyldimethylsilane dimethylchlorooctylsilane dimethyloctylchlorosilane dimethyloctylsilylchloride dimethyl-n-octylchlorosilane

Molecular Formula: C10H23ClSi

Molecular Weight: 206.83

MDL Number: MFCD00000511

Categories: Materials Chemistry > Surface Modification and Functional Coatings > Silanes and Alkoxysilanes Synthetic Chemistry > Organic Building Blocks > Other Organic Building Blocks

Product Description:

Dimethyloctylchlorosilane is an organosilicon compound characterized by a chlorosilane head group and a linear octyl chain. It is a colorless to light yellow liquid with a pungent odor, sensitive to moisture and air, and typically requires handling under inert conditions. Its primary and most significant application is as a surface modification agent, specifically a hydrophobic coating precursor. The chlorosilane group readily reacts with hydroxyl groups present on surfaces like glass, silica, or metals, forming a covalent siloxane bond. The attached dimethyloctyl chain imparts strong hydrophobic and oleophobic properties to the treated surface. This makes it valuable for creating water-repellent coatings, modifying chromatographic stationary phases (e.g., in reversed-phase HPLC), and functionalizing nanoparticles or other materials to alter their surface energy and compatibility. While its main use is in materials science for surface engineering, it also serves as a versatile organosilicon building block in organic synthesis. It can be used to introduce the dimethyloctylsilyl group into molecules, acting as a protecting group for alcohols or as a precursor for more complex silane derivatives.

Physical Properties

Melting Point: <0°C

Boiling Point: 222-225 °C(lit.)

Flash Point: 92 °C

Density: 0.873 g/mL at 25 °C(lit.)

Refractivity: n20/D 1.435(lit.)

Safety Information

Packing Level: II

Hazard Category: 8

Transport Codes: 2987

Analytical Data

Appearance: clear colourless liquid