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Quality DIMETHYLOCTADECYLCHLOROSILANE（CAS NO. 18643-08-8） factory
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Quality DIMETHYLOCTADECYLCHLOROSILANE（CAS NO. 18643-08-8） factory
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DIMETHYLOCTADECYLCHLOROSILANE（CAS NO. 18643-08-8）

Specifications
Highlight:

0.86g/mL Dimethyloctadecylchlorosilane

,

C20H43ClSi Dimethyloctadecylchlorosilane

,

18643-08-8
Product Name:
Dimethyloctadecylchlorosilane
Appearance:
Clear Liquid Or Solid
MF:
C20H43ClSi
MW:
347.09
M.P:
28-31 °C
B.P:
145-155 °C0.005 Mm Hg(lit.)
Density:
0.86 G/mL At 20 °C(lit.)
Flash point:
>230 °F
Tags:

Chlorodimethylphenylsilane

P-Trichlorosilylbiphenyl

Dimethyloctadecylchlorosilane
Key Attributes
Brand Name: SISO
Model Number: 18643-08-8
Place of Origin: China
Payment Terms: T/T
Product Description

1. Long-chain Alkyl Modified Silicone Synthetic Monomer

This product is a high-activity monofunctional alkyl chlorosilane composed of dimethyl short-chain alkyl and long-chain octadecyl saturated alkyl structure. It can undergo controllable hydrolysis and grafting polymerization to introduce long hydrophobic alkyl segments into silicone molecular chains. It effectively optimizes the surface lipophilicity, molecular flexibility and low-temperature resistance of traditional dimethyl silicone materials, and is a core monomer for preparing low-surface-energy modified silicone polymers.

2. High-efficiency Hydrophobic & Anti-fouling Surface Modifier

The ultra-long saturated octadecyl alkyl chain provides extremely low surface tension and excellent chemical inertness. The active Si-Cl bond can form stable covalent bonding with hydroxyl groups on inorganic material surfaces such as glass, silica, metal and ceramic. It constructs uniform and dense hydrophobic protective layers, endowing materials with durable water repellency, anti-fouling and self-cleaning functional characteristics.

3. Lubricating Release & Anti-wear Material Modifier 

The linear long-chain alkyl structure has excellent molecular lubricity and friction reduction properties. After surface grafting modification or resin blending modification, it can significantly reduce the friction coefficient of polymer and coating surfaces, improve surface smoothness and scratch resistance. It is widely applicable in plastic molding release, precision equipment lubrication and wear-resistant functional film preparation.

4. Interface Compatibility Regulator for Composite Materials

This monomer has excellent organic affinity and interface activity. It can effectively improve the interfacial bonding compatibility between inorganic fillers and organic polymer matrices, eliminate interfacial gaps and defects caused by poor phase solubility, and significantly enhance the processing fluidity, water resistance and long-term structural stability of composite materials.
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