p-Hydroxyanisole
Thread Content
Dear colleagues: Our facility needs to distill acrylonitrile, with the temperature to be maintained between 40 and 50 degrees. Which type of inhibitor would be suitable? One that does not affect the quality of the acrylonitrile at the top of the tower while still providing effective inhibition. Some people say that p-hydroxybenzyl ether is good for this purpose. Is there a specific temperature range within which it exerts its inhibitory effect? Does it stop working at temperatures of 40-50 degrees?
It basically doesn’t work at temperatures over 40 degrees. It merely acts as a polymerization inhibitor in storage.
40-50 degrees is just a theoretical value.
The boiling point of acrylonitrile is 77 degrees. How can the vacuum be controlled to lower its boiling point to 40-50 degrees? ? ?
The vacuum controls the absolute pressure at around 35 kPa