ETHYLTRICHLOROSILANE

CAS: 115-21-9

Ref. 3H-SIE4901.0

Product Information

• Name: ETHYLTRICHLOROSILANE
• Brand: 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.Ethyltrichlorosilane; TrichloroethylsilaneViscosity: 0.48 cStΔHcomb: -2,696 kJ/molΔHform: -84 kJ/molΔHvap: 37.7 kJ/molΔHfus: 7.0 kJ/molDipole moment: 2.1Vapor pressure, 20 °C: 26 mmVapor pressure, 30.4 °C: 66 mmCritical temperature: 287 °CCoefficient of thermal expansion: 1.5 x 10-3Employed in the cobalt-catalyzed Diels-Alder approach to 1,3-disubstituted and 1,2,3-trisubstituted benzenes

Chemical properties

• Molecular weight: 163.51
• Formula: C₂H₅Cl₃Si
• Purity: 97%
• Color/Form: Straw Liquid