I've so far handled only concentrated fuming Nitricnitric, Sulfuricsulfuric & hydrochloric acids from the inorganic side. Even during an accidental spill on the hand I did say only the HNO3$\ce{HNO3}$ affects the skin by turning it yellow and the top layer sometimes peels off.
But in the organic acid side I've had once experience in the past long long ago with Formicformic acid and it was pretty nasty. A really pungent smell and if it gets on the hand then immediately the top layer of skin will peel off. Worse than there inorganic ones. Is 99.8% Aceticacetic acid this strong?
I'm about to prepare some homemade stop bath solution for Black and White film development. I'm going to prepare a 10% Aceticacetic acid solution. Just wanted to know though I will wear nitrile gloves, in case a few drops come on the skin how bad will it be? I can't seem to find any video or much info of it's effect on YouTube or anywhere either? Just want to take all precautions.