Separation of methyl-trichlorosilane and dimethyl dichlorosilane useful in silicone and silicon production comprises extractive distillation with high boiling ether as entrainer

摘要

Separation of methyl trichlorosilane (CH3SiCl3) and dimethyl dichlorosilane ((CH3)2SiCl2) by distillation comprises extractive distillation, using an ether R-O-R' with a normal boiling point of over 120 deg C as entrainer.