Additional Properties
Hydrolytic Sensitivity 7: reacts slowly with moisture/water Safety
Hazard Info oral rat, LD50: >2,000 mg/kg
Packaging Under Nitrogen 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. Dimethyldimethoxysil
ane; DMDMOS; Dimethoxydimethylsil
ane
Contains methanol
Viscosity, 20 °: 0.44 cSt
ΔHcomb: 3,483 kJ/mol
ΔHform: 716 kJ/mol
Dipole moment: 1.33 debye
Vapor pressure, 36 °C: 100 mm
Coefficient of thermal expansion: 1.3 x 10-3
Provides hydrophobic surface treatments in vapor phase applications
Dialkoxy silane
Gelest, Inc.
Done
Datasheet
Description
Additional Properties
Hydrolytic Sensitivity 7: reacts slowly with moisture/water Safety
Hazard Info oral rat, LD50: >2,000 mg/kg
Packaging Under Nitrogen 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. Dimethyldimethoxysil
ane; DMDMOS; Dimethoxydimethylsil
ane
Contains methanol
Viscosity, 20 °: 0.44 cSt
ΔHcomb: 3,483 kJ/mol
ΔHform: 716 kJ/mol
Dipole moment: 1.33 debye
Vapor pressure, 36 °C: 100 mm
Coefficient of thermal expansion: 1.3 x 10-3
Provides hydrophobic surface treatments in vapor phase applications
Dialkoxy silane
Additional Properties
Hydrolytic Sensitivity 7: reacts slowly with moisture/water Safety
Hazard Info oral rat, LD50: >2,000 mg/kg
Packaging Under Nitrogen 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. Dimethyldimethoxysil
ane; DMDMOS; Dimethoxydimethylsil
ane
Contains methanol
Viscosity, 20 °: 0.44 cSt
ΔHcomb: 3,483 kJ/mol
ΔHform: 716 kJ/mol
Dipole moment: 1.33 debye
Vapor pressure, 36 °C: 100 mm
Coefficient of thermal expansion: 1.3 x 10-3
Provides hydrophobic surface treatments in vapor phase applications
Dialkoxy silane
Additional Properties
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
Safety
Hazard Info oral rat, LD50: >2,000 mg/kg
Packaging Under Nitrogen
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.
Dimethyldimethoxysilane; DMDMOS; Dimethoxydimethylsilane
Contains methanol
Viscosity, 20 °: 0.44 cSt
ΔHcomb: 3,483 kJ/mol
ΔHform: 716 kJ/mol
Dipole moment: 1.33 debye
Vapor pressure, 36 °C: 100 mm
Coefficient of thermal expansion: 1.3 x 10-3
Provides hydrophobic surface treatments in vapor phase applications
