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Octadecyldimethylchlorosilane

Chemical Name:	Octadecyldimethylchlorosilane
Product Category:	Long-chain Silanes \| Silane Coupling Agent
Structural Formula:
CAS No.:	18643-08-8
EINECS:	242-472-2
Molecular Formula:	C₂₀H₄₃ClSi
Molecular Weight:	347.09 g/mol
Appearance:	White to off-white crystalline powder

Octadecyldimethylchlorosilane Description

n-Octadecyldimethylchlorosilane, also known as Chlorodimethyloctadecylsilane, is an organosilicon compound utilized primarily for surface modification and as a silylating reagent. Its chemical structure comprises a long alkyl chain, contributing to its hydrophobic properties.

Chemical Name	Octadecyldimethylchlorosilane
Synonyms	Chlorodimethyloctadecylsilane, Stearyldimethylchlorosilane
Boiling Point	145-155°C at 0.005 mm Hg
Density	0.86 g/mL at 20°C
Flash Point	230°F (110°C)
Refractive Index (n²⁰/D)	1.4530
Water Solubility	Reacts with water
Uses	Surface Modification: Chlorodimethyloctadecylsilane is extensively used to modify surfaces, enhancing hydrophobicity and reducing friction, thereby improving material performance in various applications. Silylation Reagent: In analytical chemistry, it serves as a silylation agent for gas chromatography and mass spectrometry, improving the volatility and detectability of analytes. Nanoparticle Synthesis: Its ability to stabilize colloidal solutions makes it significant in synthesizing nanoparticles, contributing to advancements in nanotechnology.
Safety and Handling	Hazard Symbols: C (Corrosive), F (Flammable) Risk Phrases: R11: Highly flammable. R34: Causes burns. R67: Vapors may cause drowsiness and dizziness. Safety Phrases: S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection.
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Sample	Provided for free
Inventory items	3 tons
Price	Please contact us to get the new price.

Packaging Specifications

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Octadecyldimethylchlorosilane: Guide

Octadecyldimethylchlorosilane (CAS 18643-08-8) is a versatile organosilicon compound widely used for surface modification, analytical applications, and nanoparticle synthesis. Its unique properties, such as strong hydrophobicity and high reactivity, make it essential in various industrial and research fields, including material science, coatings, and diagnostics. This silane coupling agent enhances the adhesion, stability, and performance of treated surfaces.

Due to its reactive and corrosive nature, proper handling, storage, and disposal are vital to ensure safety and preserve its effectiveness. Always refer to the latest MSDS and follow industry regulations for safe use.