DIMETHYLDIETHOXYSILANE, 98%

CAS: 78-62-6

Ref. 3H-SID4121.0

Product Information

• Name: DIMETHYLDIETHOXYSILANE, 98%
• 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.Dimethyldiethoxysilane; DiethoxydimethylsilaneViscosity: 0.53 cStVapor pressure, 25 °C: 15 mmΔHcomb: -4,684 kJ/molΔHform: 837 kJ/molΔHvap: 41.0 kJ/molDipole moment: 1.39 debyeVapor pressure, 25 °C: 15 mmCoefficient of thermal expansion: 1.3 x 10-3Hydrophobic surface treatment and release agentDialkoxy silane

Chemical properties

• Molecular weight: 148.28
• Formula: C₆H₁₆O₂Si
• Purity: 98%
• Color/Form: Colorless To Slightly Yellow Liquid