I want to ask you, at what temperature is it appropriate to dry ZnCl2 to the anhydrous form? At a melting point of 293°C of ZnCl2 it can be 200°C? I used it for Lucas´reagent with HCl, and now after the reaction when I made 2-chloropropane I got it solidified in a flask after about 2 hours of boiling to remove most of the water, and I want to get ZnCl2 back as anhydrous. It is strange that it is yellow-brown and glassy (photo).
And I want to ask you if I can dry it in a normal user oven? Will it not release harmful fumes? Pungent fumes were released during boiling, but I judge (since the vapor temperature was over 100°C and the plate was full, about 380°C) that ZnCl2 was also released. Unfortunately, I have no other oven.
Thak you, Lukáš S.