CAS 1719-53-5: Dichlorodiethylsilane

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Dichlorodiethylsilane is used in ethchlorvynol assay. It is used in Organic Synthesis, Pharmaceuticals, Agrochemicals and Dyestuffs. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Bridging Silicon-Based Blocking Agent Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure. 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. Diethyldichlorosilane; Dichlorodiethylsilane; DES ΔHvap: 41.9 kJ/molDipole moment: 2.4 debyeSurface tension: 30.3 mN/mVapor pressure, 21 °C: 10 mmThermal conductivity: 0.134 W/m°CSimilar to, but more stable derivatives than dimethylsilylenesSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

Dichlorodiethylsilane is an aromatic hydrocarbon that is a colorless liquid with a pungent odor. It has been used as a chemical intermediate and in the synthesis of dyes, pharmaceuticals, and other organic chemicals. Dichlorodiethylsilane reacts with hydrogen fluoride to form hydrogen chloride and dichloroethane. The reaction products are acidic due to the presence of hydroxyl groups, which react with water vapor to form hydrochloric acid and alcohols. Dichlorodiethylsilane reacts with nucleophiles such as chlorides or hydroxides to form ether linkages. This compound also reacts with c1-c4 haloalkyls to form chlorinated alkyl groups. Dichlorodiethylsilane is soluble in water, but not in ether or benzene. It is stable at room temperature but decomposes when heated to temperatures above 200°C (392°F).