Chloro(dimethyl)silane

Chloro(dimethyl)silane is an organosilicon compound with the molecular formula C2H7ClSi and CAS number 1066-35-9. This chemical compound belongs to the chlorosilane family and contains both silicon-carbon and silicon-chlorine bonds. With a molecular weight of 94.61 g/mol, it serves as an important intermediate in silicone chemistry and various industrial applications requiring silicon-based functionalization.

Chloro(dimethyl)silane is typically a colorless to pale yellow liquid at room temperature with a characteristic pungent odor. As an organosilicon compound, it is highly reactive with water and moisture, undergoing hydrolysis reactions. The compound is soluble in organic solvents but reacts vigorously with water and alcohols, making it moisture-sensitive and requiring anhydrous storage conditions.

Chloro(dimethyl)silane is primarily used as a chemical intermediate in the synthesis of silicone polymers and organosilicon compounds. It serves as a coupling agent for surface modification of materials, particularly in the production of silicone-based adhesives, sealants, and coatings. The compound is also utilized in the pharmaceutical and specialty chemical industries for introducing dimethylsilyl protecting groups in organic synthesis.

Chloro(dimethyl)silane requires careful handling 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 avoid inhalation of vapors. Due to its reactivity with moisture, avoid contact with water and maintain dry conditions. Use non-sparking tools as the compound is classified as flammable (ADR Class 3).

Chloro(dimethyl)silane must be stored in tightly sealed, dry containers away from moisture and humidity. Storage areas should be cool, well-ventilated, and protected from direct sunlight and heat sources. Keep away from water, alcohols, and strong bases which can cause vigorous reactions. Storage facilities should comply with flammable liquid regulations due to its ADR Class 3 classification and Packing Group I requirements.

In case of skin contact with chloro(dimethyl)silane, immediately remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. For eye contact, flush thoroughly with water and seek immediate medical attention. If inhaled, move the person to fresh air and provide respiratory support if needed. In case of ingestion, do not induce vomiting and seek immediate medical care.

Chloro(dimethyl)silane disposal must comply with local and national hazardous waste regulations. The compound should never be disposed of in regular waste streams or sewage systems due to its reactive nature. Contact licensed hazardous waste disposal companies for proper treatment and disposal. Small quantities can be carefully hydrolyzed under controlled conditions by trained personnel, but this should only be done following proper safety protocols.

Chloro(dimethyl)silane is classified under ADR as Class 3 (flammable liquids), Packing Group I, indicating high danger level. Transport requires proper packaging in approved containers with appropriate labeling and documentation. Vehicles must comply with ADR regulations for dangerous goods transport, including proper placarding and emergency equipment. Only trained personnel should handle transportation, and emergency response information must be readily available.

Chloro(dimethyl)silane is subject to various chemical regulations including REACH registration requirements in Europe. While not currently listed as a Substance of Very High Concern (SVHC), it must comply with CLP regulation requirements for classification, labeling, and packaging. Users must follow occupational health and safety regulations, and industrial facilities may need to report usage under various environmental and chemical inventory requirements.

Chloro(dimethyl)silane is available through OYSI, a European distributor of specialty chemicals serving various industries across Europe. OYSI provides reliable supply chains for organosilicon compounds and technical chemicals to professional users. For procurement, contact OYSI directly to discuss specific requirements, quantities, and delivery options. Purchases typically require verification of end-use applications due to the specialized nature of this chemical intermediate.