I had a 2N solution of KOH stored in a 2L plastic soda bottle. I went to use some today and the bottom the bottle had cracked and it leaked everywhere. I’ve heard you shouldn’t store it in glass. Anyone have suggestions for how I should store it?
Yeah I have some empty 1-gallon vinegar jugs I could use. I read somewhere you should use PET bottles to store a KOH solution. I’ve read elsewhere that PET provides good chemical resistance, so I’m surprised it was an issue.
I use 8N KOH for titrating calcium hardness in water. I buy it already made up (mixing an 8N KOH solution is a highly exothermic process). The KOH reagent bottles are made of HDPE.
I also use the 8N KOH for controlling pH in fermenting mead and sugar washes.
This sounds like a case of a little knowledge is a dangerous thing. PET is a condensation polymer so it is susceptible to attack from highly basic solutions.