n-OCTADECYLTRIMETHOXYSILANE

CAS : 3069-42-9

Ref. 3H-SIO6645.0

Informations sur le produit

• Nom: n-OCTADECYLTRIMETHOXYSILANE
• Marque: Gelest
• Description: Alkyl Silane - Conventional Surface BondingAliphatic, 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-Octadecyltrimethoxysilane; Trimethoxyoctadecylsilane; TrimethoxysilyloctadecaneContains 5-10% C18 isomersMelting point: 13-17 °C (55-63 °F)Forms hydrophobic, oleophilic coatingsForms clear, ordered films with tetramethoxysilaneUndergoes oscillatory adsorption to form SAMsTrialkxoy silane

Propriétés chimiques

• Masse moléculaire: 374.68
• Formule: C₂₁H₄₆O₃Si
• Degré de pureté: 92% including isomers
• Couleur/Forme: Straw Liquid