CAS 18643-08-8

Octadécylméthyldichlorosilane

Description :

Octadécylméthyldichlorosilane, avec le numéro CAS 18643-08-8, est un composé organosiliconé caractérisé par sa longue chaîne alkylique hydrophobe et un groupe fonctionnel chlorosilane. Ce composé apparaît généralement sous forme de liquide incolore à jaune pâle et est connu pour sa capacité à former des monocouches auto-assemblées sur divers substrats, ce qui le rend précieux dans les applications de modification de surface. Sa nature hydrophobe est attribuée à la chaîne octadécyle (C18), qui améliore la répulsion à l'eau et réduit l'énergie de surface. Octadécylméthyldichlorosilane est souvent utilisé dans la production de revêtements hydrophobes, ainsi que dans la préparation de silice fonctionnalisée et d'autres matériaux pour une utilisation en électronique, biotechnologie et science des matériaux. De plus, il peut réagir avec l'humidité pour former des liaisons siloxane, conduisant à la formation de réseaux de silane stables. Des précautions de sécurité sont nécessaires lors de la manipulation de ce composé, car il peut être irritant pour la peau et les yeux, et des conditions de stockage appropriées doivent être maintenues pour éviter l'hydrolyse.

Formule : C₂₀H₄₃ClSi

InChI : InChI=1S/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

Code InChI : InChIKey=GZGREZWGCWVAEE-UHFFFAOYSA-N

SMILES : C(CCCCCCCCCCCCCCC)CC[Si](C)(C)Cl

Synonymes :

• Chlorooctadecyldimethylsilane
• Dimethyl(octadecyl)chlorosilane
• Dimethyl(octadecyl)silyl chloride
• Dimethyl(octyldecyl)silyl chloride
• N-octadecyldimethylchlorosilane
• Octadecylchlorodimethylsilane
• Octadecyldimethylchlorosilane
• Silane, chlorodimethyloctadecyl-
• Chlorodimethyloctadecylsilane

Dimethyloctadecylchlorosilane

CAS : 18643-08-8

Formule : C₂₀H₄₃ClSi

Degré de pureté : >97.0%(T)

Couleur et forme : White to Almost white powder to lump

Masse moléculaire : 347.10

Ref: 3B-D1560

Chlorodimethyl-n-octadecylsilane, 95%

CAS : 18643-08-8

Preparation of hydrophobic surfaces, chain terminator

Formule : C₂₀H₄₃ClSi

Degré de pureté : 95%

Masse moléculaire : 347.1

Ref: 02-042414

Chlorodimethyloctadecylsilane

CAS : 18643-08-8

Formule : C₂₀H₄₃ClSi

Degré de pureté : 95%

Couleur et forme : Liquid

Masse moléculaire : 347.0939

Ref: IN-DA0034LG

Chlorodimethyl(Octadecyl)Silane

CAS : 18643-08-8

Chlorodimethyl(Octadecyl)Silane

Degré de pureté : 98%

Masse moléculaire : 347.09g/mol

Ref: 54-OR1029958

n-OCTADECYLDIMETHYLCHLOROSILANE, 97%

CAS : 18643-08-8

Alkyl Silane - Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.
n-Octadecyldimethylchlorosilane; Dimethyl-n-octadecylchlorosilane; Chlorodimethyloctadecylsilane; Chlorodimethylsilyl-n-octadecane
Contains <5% C18 isomersEmployed in bonded HPLC reverse phases

Formule : C₂₀H₄₃ClSi

Degré de pureté : 97% including isomers

Couleur et forme : Off-White Solid

Masse moléculaire : 347.1

Ref: 3H-SIO6615.1

n-OCTADECYLDIMETHYLCHLOROSILANE

CAS : 18643-08-8

Alkyl Silane - Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.
n-Octadecyldimethylchlorosilane; Dimethyl-n-octadecylchlorosilane; Chlorodimethyloctadecylsilane; Chlorodimethylsilyl-n-octadecane
Contains 5-10% C18 isomersEmployed in bonded HPLC reverse phases

Formule : C₂₀H₄₃ClSi

Degré de pureté : 97% including isomers

Couleur et forme : Off-White Solid

Masse moléculaire : 347.1

Ref: 3H-SIO6615.0

n-Octadecyldimethylchlorosilane

CAS : 18643-08-8

Formule : C₂₀H₄₃ClSi

Degré de pureté : 95%

Couleur et forme : Solid

Masse moléculaire : 347.1

Ref: 10-S12175

n-OCTADECYLDIMETHYLCHLOROSILANE, 70% in toluene

CAS : 18643-08-8

Alkyl Silane - Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.
n-Octadecyldimethylchlorosilane; Dimethyl-n-octadecylchlorosilane; Chlorodimethyloctadecylsilane; Chlorodimethylsilyl-n-octadecane
Contains 5-10% C18 isomers70% in toluene

Formule : C₂₀H₄₃ClSi

Couleur et forme : Straw Amber Liquid

Masse moléculaire : 347.1

Ref: 3H-SIO6615.2