I have recently had a bit of trouble with PVC coin albums (https://en.numista.com/forum/topic63062.html), the coins haven't been damaged yet but I would like to prevent any damage at all. I went to buy some acetone to clean the coins, but the closest to pure acetone that I could find contained 1% "Bitrex", a trade name for denatonium or denatonium benzoate. Is it safe for coins?
Also, is there any rush to remove the PVC? The coins have only been in the albums for a few weeks.