Due to COVID-19 and peoples' practice of hoarding, IPA is becoming incredibly difficult to find where I live (and online). Since we are all home so much these days, I like spending some of that time restoring vintage computers. My normal routine is to clean the PCB's with 99.9% IPA and use denatured alcohol for cleaning stubborn pen marks, etc. on the case. I often use glass cleaner for the plastic cases too.
I have a bit of denatured alcohol which doesn't seem to be hard to get. So my question is, will I damage my electronics by using denatured alcohol (pictured below) to clean the boards?
From what I understand, denatured alcohol is an umbrella term for the fact of adding a denaturing ingredient to alcohol. This could be lots of stuff like kerosene. One reason is to prevent people from drinking it. Also, IPA is denatured as well (again, from my understanding). But if it helps any, this is typically what I use: