During this first stage care must be taken as Hydrochloric acid is produced. The starting products are not particularily dangerous PCl3 is toxic if inhaled as Hydrochloric acid would be formed.
Methanol is extremly flamable.
Second Stage Simple heating will result in this transformation shown, however the product shown below is also formed simultaneously. During this stage care must be taken as chlorine is required as well as the toxic PCL3 used in the first stage. Yet again HCl is produced so care must be taken. The product can be separated from the other products by distillation. Yet again Hydrochloric acid is produced during this stage and the Hydrofluoric acid used is extremely dangerous.