Methyltrichlorosilane

The Molecular Structure of Methyltrichlorosilane (CAS NO.75-79-6):

Empirical Formula: CH₃Cl₃Si
Molecular Weight: 149.479 
IUPAC Name: trichloro(methyl)silane 
Appearance: Colorless clear liquid
Nominal Mass: 148 Da
Average Mass: 149.479 Da
Monoisotopic Mass: 147.906959 Da 
Index of Refraction: 1.434
Molar Refractivity: 29.94 cm³
Molar Volume: 114.9 cm³
Surface Tension: 21.1 dyne/cm
Density: 1.3 g/cm³
Enthalpy of Vaporization: 30.17 kJ/mol
Boiling Point: 73.5 °C at 760 mmHg
Vapour Pressure: 124 mmHg at 25°C 
Storage temp: Flammables area
Water Solubility: REACTS
FreezingPoint:  -77.8°C 
Melting Point: -77°C 
Flash Point: -13°C 
Sensitive: Moisture Sensitive
Stability: Stable, but reacts violently with water. Highly flammable. Incompatible with moisture, water, strong bases, strong acids, strong oxidizing agents
InChI
InChI=1/CH3Cl3Si/c1-5(2,3)4/h1H3
Smiles
[Si](C)(Cl)(Cl)Cl 
Synonyms: Methyl silicochloroform ; Methylsilicon trichloride ; Methylsilichloroform ; Methylsilyltrichloride  
Product Categories: Chloro;Organics;Biochemistry;Functional Materials;Reagents for Oligosaccharide Synthesis;Si (Classes of Silicon Compounds);Si-Cl Compounds;Silane Coupling Agents;Silane Coupling Agents (Intermediates);Silicon Compounds (for Synthesis);Synthetic Organic Chemistry;Trichlorosilanes;Chloro Silanes

 Methyltrichlorosilane (CAS NO.75-79-6) is mainly used a precursor for forming various cross-linked siloxane polymers. Methyltrichlorosilane (CAS NO.75-79-6) is mainly used to form polymers such as poly(methylsilyne). Esters and lactones can also be cleaved with methyltrichlorosilane and sodium iodide to give the corresponding carboxylic acids . Acetals convert to carbonyl compounds.Thus, Methyltrichlorosilane (CAS NO.75-79-6)can be used to remove acetal protecting groups from carbonyl compounds under mild conditions. Finally, Methyltrichlorosilane (CAS NO.75-79-6) and sodium iodide can be used as a means of converting alcohols to their corresponding iodides.

 Methyltrichlorosilane (CAS NO.75-79-6) results from the "direct reaction" of chloromethane with elemental silicon in the presence of a copper catalyst, usually at a temperature of at least 250 °C.
3 CH₃Cl + Si → CH₃SiCl₃ + C₂H₄ + H₂ 
While this reaction is currently the standard in industrial silicone production and is nearly identical to the first direct synthesis of methyltrichlorosilane, the overall process is inefficient with respect to methyltrichlorosilane.

Poison by inhalation and intraperitoneal routes. Moderately toxic by ingestion. A severe irritant to skin, eyes, and mucous membranes. Flammable when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits toxic fumes of Cl⁻. See also CHLOROSILANES.