sentences:  Methyltrichlorosilane and sodium iodide can be used as a means of converting alcohols to their corresponding iodides; however, this reaction does not work as well with primary alcohols.Methyltrichlorosilane is used as a reagent in Silicon Carbide epitaxy to introduce chloride in the gas phase.Chloride is used to reduce the tendency of silicon to react in the gas phase and thus to increase the growth rate of the process.