To search by structure, left click in the box below to display the chemdraw toolbar. Then, draw the chemical structure of interest in the box using the toolbar. When your structure is complete, click “Search by Name” or “Search by SMILES” to generate the product name or SMILES respectively. This feature will search within the Gelest product database for matching chemical names or SMILES. Note: In cases where Gelest uses alternate chemical names, it may be necessary to search for the product of interest by its CAS#.
All structures are computer generated. Please rely on the product data below for placing your order. If you see any errors in structures, please email customer service so that they can be addressed.
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.
Glassclad® 18; Octadecyl functional silane
Alternative Name: Octadecyl functional silane, 20% in t-butanol/diacetone alcohol
Specific Gravity: 0.88
Flashpoint: 10°C (50°F)
HMIS Key: 2-4-1-X
Hydrolytic Sensitivity: 7: reacts slowly with moisture/water
Application: Reduces blood protein adsorption.1
Reference: 1. Arkles, B. et al. In Silanes Surfaces & Interfaces; Leyden, D., Ed; Gordon & Breach: 1986; p 91.
Additional Properties: Surface resistivity of treated surface: 1.2 x 1013 ohms?c of treated glass surface: 31 mN/mCoefficient of friction of treated glass surface: 0.2 - 0.3Pour point: 4°COCTADECYL FUNCTIONAL SILANE, 20% in t-butanol/diacetone alcohol