Dichloro(ethyl)silane

Dichloro(ethyl)silane is an organosilicon compound with the molecular formula C2H6Cl2Si and CAS number 1789-58-8. This chemical features a silicon atom bonded to an ethyl group and two chlorine atoms, making it a chlorosilane derivative. With a molecular weight of 129.06 g/mol, it serves as an important intermediate in silicon chemistry and organosilicon synthesis. The compound belongs to the family of alkylchlorosilanes, which are widely used in industrial applications requiring silicon-carbon bond formation.

Dichloro(ethyl)silane is typically a colorless liquid at room temperature with a characteristic pungent odor common to chlorosilanes. The compound is highly reactive with water and moisture, readily hydrolyzing to form silanols and hydrogen chloride gas. It exhibits low viscosity and relatively high volatility due to its molecular structure. The presence of two reactive Si-Cl bonds makes it susceptible to nucleophilic substitution reactions, while the ethyl group provides hydrophobic character to the molecule.

Dichloro(ethyl)silane is primarily used as a building block in organosilicon chemistry and silicone polymer synthesis. It serves as a coupling agent for surface modification of materials, enabling the attachment of organic groups to inorganic substrates. The compound is utilized in the production of specialized silicone elastomers, resins, and functional coatings. Additionally, it finds applications in semiconductor manufacturing processes and as an intermediate for synthesizing other organosilicon compounds with specific functionalities required in advanced materials.

Dichloro(ethyl)silane must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation of vapors. Avoid contact with water and moisture, as the compound hydrolyzes to produce corrosive hydrogen chloride gas. Use non-sparking tools and equipment, and ensure proper grounding to prevent static electricity buildup. Always have emergency eyewash stations and safety showers readily accessible.

Dichloro(ethyl)silane should be stored in tightly sealed, moisture-proof containers in a cool, dry, and well-ventilated area away from heat sources and ignition sources. The storage area must be protected from water and humidity to prevent hydrolysis reactions. Keep the compound away from incompatible materials such as alcohols, amines, and strong bases. Storage containers should be made of appropriate materials resistant to chlorosilanes, and the storage area should be equipped with proper ventilation systems to handle any potential vapor release.

Dichloro(ethyl)silane contact requires immediate emergency response due to its reactive nature. For skin contact, immediately remove contaminated clothing and flush the affected area with plenty of water for at least 15 minutes. In case of eye contact, rinse thoroughly with water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Do not induce vomiting if ingested. Seek immediate medical attention in all cases of exposure and provide the safety data sheet to medical personnel.

Dichloro(ethyl)silane disposal must comply with local, national, and international waste regulations as a hazardous chemical waste. The compound should never be disposed of down drains or into the environment due to its reactive nature with water. Arrange disposal through licensed hazardous waste contractors who can handle chlorosilane compounds safely. Small quantities may be carefully hydrolyzed under controlled conditions by trained personnel, but this should only be done following proper safety protocols and environmental guidelines.

Dichloro(ethyl)silane is classified under ADR transport regulations as Class 4.3 (substances which, in contact with water, emit flammable gases), Packing Group I, indicating high danger level. Transport requires specialized packaging that prevents moisture ingress and meets UN specification requirements. Vehicles must carry appropriate emergency equipment and documentation. Drivers need specific training for dangerous goods transport, and the shipment must be properly labeled with hazard placards. Transport should avoid extreme temperatures and ensure secure packaging to prevent leakage.

Dichloro(ethyl)silane is subject to various chemical regulations including REACH registration requirements for manufacture, import, and use in the European Union. Under the CLP Regulation, it requires proper classification, labeling, and safety data sheets. The compound is not currently listed as a Substance of Very High Concern (SVHC) under REACH. Industrial users must comply with workplace safety regulations and may need specific permits for handling and storage. Export/import may require additional documentation depending on destination country regulations.

Dichloro(ethyl)silane is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides high-quality dichloro(ethyl)silane with proper documentation, safety data sheets, and regulatory compliance support. As an established chemical distributor, OYSI ensures reliable supply chains and technical support for industrial applications. Contact OYSI directly for specific grades, quantities, and delivery options tailored to your technical requirements and geographical location within Europe.