i don’t think it’s oil based, but how would i tell? it’s a simple child’s bookcase, what would the norm be?
Googling it, it says that if you scrub a small area well with a mixture of household cleaner and water, than towel dry, you should be able to tell by soaking a q-tip with alcohol and rubbing it around on the surface. If the paint comes off its latex, if it doesn’t its oil based.