Polyether polyol
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What if it’s a dried polyether polyol? ? ? ?
Just add magnesium sulfate! :lol:lol
Reply to 2# ha*a: Well, I used a physical method before, by creating a vacuum. However, the drying is incomplete. What is the principle behind drying with magnesium sulfate?
Magnesium sulfate is not used for drying; reduced-pressure distillation is generally sufficient. Laboratory drying can be carried out by heating while creating a vacuum, and it is best if it also has stirring. However, be sure to replace it with nitrogen several times; otherwise it will turn yellow. You can also add a little antioxidant, such as BHT
Reply to 4# justin-1983: Learned something new, hehe
Vacuum, nitrogen inflation, dehydration, appropriate temperature, pressure, dehydration time,