A thorough understanding of a chemical compound's properties is fundamental for its effective use in research and industrial applications. Bis(trichlorosilyl)methane (CAS 4142-85-2), an important organosilicon intermediate, possesses a unique set of chemical and physical characteristics that dictate its utility and handling. This article explores these properties, providing valuable insights for chemists, researchers, and procurement specialists.

Bis(trichlorosilyl)methane, with the molecular formula CH2Cl6Si2 and a molecular weight of 282.92 g/mol, is typically a colorless clear liquid. Its structure features a central methylene group bridging two trichlorosilyl groups (Cl3Si-CH2-SiCl3). The presence of six silicon-chlorine bonds is the key to its reactivity. These bonds are polar and susceptible to nucleophilic attack, particularly by water and alcohols, leading to hydrolysis. This rapid reaction with moisture means that Bis(trichlorosilyl)methane is highly sensitive to water, necessitating storage under anhydrous conditions and handling in dry atmospheres, often under nitrogen or argon.

The boiling point of Bis(trichlorosilyl)methane is cited around 179-180 °C at atmospheric pressure, though some sources list a different value (e.g., 145.0±13.0 °C at 760 mmHg from Alfa Chemical). Its density is approximately 1.545 g/mL at 25 °C. These physical parameters are important for process design and handling protocols. Its flash point is reported as >221 °F, indicating it is combustible but not highly flammable under standard conditions, though its reactivity with moisture should always be considered a primary hazard.

Chemically, Bis(trichlorosilyl)methane is a versatile building block. It readily undergoes reactions such as hydrosilylation, substitution, and condensation. These reactions are fundamental to its use as a precursor in the synthesis of silicon-containing polymers, silanes, and other organosilicon compounds. In pharmaceutical synthesis, its ability to react with various functional groups makes it useful for introducing silicon moieties or as a reagent in specific transformations.

For those looking to buy Bis(trichlorosilyl)methane, understanding these properties is crucial for selecting the right grade and ensuring safe handling. A reputable manufacturer will provide detailed safety data sheets (SDS) and technical specifications. When procuring this compound, especially from a supplier in China, verifying purity (e.g., 97% min) and understanding its hydrolytic sensitivity are key steps to successful integration into your chemical processes. Proper storage, handling, and reaction conditions are vital to maximize yield and safety when working with this reactive intermediate.