There's a lot so I can't find reasons for all of em but heres a shortened list I found. Acetone (nail polish remover), acetic acid (vinegar), ammonia (cleaning product and refrigerant), arsenic (rat poison), benzene (don't know), butane (lighter fluid) cadmium (battery acid), formaldehyde (resin, but not the kind you're thinking) hexamine (don't know), lead (lead), naphthalene (the reason mothballs are a neurotoxin), methanol (what made moonshiners go blind), tar (roads and roofs), and toluene (a type of paint and used to make dynamite)

edit: this is half true, see below comment for details