18643-08-8

Usage

Uses

Used in Surface Modification Industry:
Chlorodimethyl-n-octadecylsilane is used as a silylating reagent for the preparation of hydrophobic surfaces. It is applied to create a hydrophobic coating on various substrates, such as glass, metal, and plastic, to prevent water and other polar molecules from adhering to the surface. This property is useful in applications where water resistance and easy cleaning are required, such as in laboratory glassware, medical devices, and industrial equipment.
Used in Chemical Synthesis:
Chlorodimethyl-n-octadecylsilane is used as a silylating reagent in chemical synthesis, particularly in the preparation of organosilicon compounds. It can be used to modify the properties of other molecules by attaching a silyl group, which can improve their stability, reactivity, or solubility. This application is valuable in the development of new materials and pharmaceuticals.
Used in Semiconductor Industry:
Chlorodimethyl-n-octadecylsilane is used as a chain terminator in the synthesis of silane-based polymers, which are used in the semiconductor industry. By controlling the length of the polymer chains, it is possible to create materials with specific properties, such as improved electrical conductivity or mechanical strength. This is crucial for the development of advanced electronic devices and components.

Flammability and Explosibility

Notclassified

InChI:InChI=1/C20H43ClSi/c1-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-22(2,3)21/h4-20H2,1-3H3

Upstream product

• 75-78-5 dimethylsilicon dichloride 
• 112-89-0 1-Bromooctadecane 
• 1066-35-9 dimethylmonochlorosilane 
• 112-88-9 octadec-1-ene 
• 75-44-5 phosgene 
• 75-77-4 chloro-trimethyl-silane 
• 58626-12-3 Hydroxydimethyloctadecylsilan 
• 107-06-2 1,2-dichloro-ethane 
• 5157-75-5 n-octadecylmethyldichlorosilane 
• 1184-58-3 dimethylaluminum chloride 
• 112-04-9 octadecyltrichlorosilane 

Downstream Products

• 76328-77-3 (dimethylamino)dimethyl(octadecyl)silane 
• 850566-23-3 1-phenyl-2-(p-dimethyloctadecylsilyl)phenylacetylene 
• 1026266-64-7 DMODS-melphalan 
• 1429630-75-0 2-dimethyl-n-octylsilyl-5-dimethyl-n-octadecylsilyl-p-bis(bromomethyl)benzene 

Relevant academic research and scientific papers

Effect of Bonded-Chain Rigidity on Selectivity in Reversed-Phase Liquid Chromatography

A model stationary phase has been synthesized and used to test the predictions of a lattice-model-based, unified molecular theory for selectivity in reversed-phase liquid chromatography recently proposed by Martire and Boehm.The results of the measurement of selectivity for flexible-chain, rigid-rod, and platelike solutes support the predictions of the model with selectivity following the order rods > plates > flexible chains.

Reactivity of Organosilane Reagents on Microparticulate Silica

Competitive surface reactions between binary organosilane mixtures and microparticulate silica were undertaken to determine if the surface composition of chemically modified silicas could be controlled by varying the molar composition and addition rate of the reagent mixture.X-ray fluorescence (XRF) spectroscopy and elemental carbon analysis permitted differences in silane reactivity to be evaluated as a function of alkyl chain length for a series of haloalkylsilanes.The rate of addition and the presence of a catalyst were found to control the surface composition of silicas derivatized from binary si lane mixtures.Comparison of X-ray photoelectron spectroscopy data with XRF results was used to determine the spatial distribution of the immobilized silanes in order to evaluate the extent to which diffusion controls the relative reactivity of organosilane reagents.

Solvent-free hydrosilylation of alkenes and alkynes using recyclable platinum on carbon nanotubes

Platinum nanoparticles were stabilized at the surface of carbon nanotubes and the nanohybrid was valorized as a catalyst for the hydrosilylation of alkenes and alkynes. The heterogeneous catalyst operated under sustainable conditions (room temperature, no solvent, low catalyst loading, air atmosphere) and exhibited improved stabilty as recycling and reuse could be achieved for multiple consecutive reactions.

A General and Selective Synthesis of Methylmonochlorosilanes from Di-, Tri-, and Tetrachlorosilanes

Direct catalytic transformation of chlorosilanes into organosilicon compounds remains challenging due to difficulty in cleaving the strong Si-Cl bond(s). We herein report the palladium-catalyzed cross-coupling reaction of chlorosilanes with organoaluminum reagents. A combination of [Pd(C3H5)Cl]2 and DavePhos ligand catalyzed the selective methylation of various dichlorosilanes 1, trichlorosilanes 5, and tetrachlorosilane 6 to give the corresponding monochlorosilanes.

Waste-free and efficient hydrosilylation of olefins

High purity silicone precursors can now be synthesized by hydrosilylation of solvent-free olefins catalyzed by a highly stable and active glass hybrid catalyst consisting of mesoporous organosilica microspheres doped with Pt nanoparticles. These findings open the door to the sustainable manufacture of silicone and a way to further reduce the amount of platinum in silicones, which are ubiquitous advanced polymers with multiple uses and applications.

Hydrocarbon Soluble Recyclable Silylation Reagents and Purification Auxiliaries

Procedures using heptane-phase-selectively soluble octadecyldimethylsilyl groups to facilitate separations and silyl reagent regeneration are described. These results show that alcohols and alkynes protected by these groups are phase-selectively soluble in hydrocarbon solvents. In a thermomorphic cyclohexane/DMF system, >96% of the silylated alcohols are in the cyclohexane phase, allowing these compounds to be purified by a simple liquid/liquid extraction. Applications of these silylating agents in a Grignard synthesis and Sonogashira reaction are described.

Method for producing chlorosilanes

A method for producing chlorosilanes, which are useful in a wide range of industrial field as an intermediate for organosilicon products such as silicone rubbers, silicone oils, silicone resins, etc. as well as a raw material for the production of organic chemicals such as medicines, agricultural chemicals, dyestuffs, etc., represented by the general formula, STR1 wherein R1 and R4, which may be the same or different, represent an alkyl group having from 1 to 5 carbon atoms, a chloromethyl group, an ethynyl group or a halogen atom; R2 and R3, which may be the same or different, represent an alkyl group having from 1 to 3 carbon atoms; R5 and R6, which may be the same or different, represent an alkyl group having from 1 to 2 carbon atoms; and R7 represents an alkyl group having from 1 to 18 carbon atoms, which comprises reacting a disiloxane represented by the general formula, STR2 wherein R1, R2, R3, R4, R5 and R6 are as defined above, or a silanol represented by the general formula, STR3 wherein R2, R3 and R7 are as defined above, with phosgene in the presence or absence of a tertiary amide.

246. Monofunctional (Dimethylamino)silane as Silylating Agent

The reaction of triorganyl(dimethylamino)silanes with surface-hydrated silicon dioxide has been studied.These silylating agents are easy to prepare from the corresponding chloro or bromosilanes with dimethylamine.The resulting products are thermally stable and relatively volatile.Reaction with surface-hydrated silicon-dioxide preparations at a50-250 deg C for 170 h yields a dense grafted layer.However, with (dimethylamino)silanes having strongly polar substituents, a retreatment of the surface-modified silica seems to be necessary in order to attain maximum coverage.