Hazmat 6.1 confusion

Started trucking like a month ago with a company that haul’s hazmat. There’s a route we take that doesn’t allow certain hazmat/anything bulk. 6.1 inhalation hazard is one of the hazmats that’s restricted rather it’s bulk or not. Well a couple days ago I got hazmat that was class “8(6.1)” and was said no placards was needed as it was only 100 pounds. 8 is corrosive obviously but the subclass is 6.1? Inhalation hazard? Or just toxic? Usually ANY amount of inhalation hazard is placarded but this load said no placards needed. My dispatch and co workers have no ####ing clue because apparently they never had it or cared enough to worry about it. I avoided the restricted road which added like 2 hours to my day. Was that for no reason? Can anyone confirm??

 

Is 6.1 and 6 the same? I might have a lot of dumb questions cause this is my first trucking job

 

It was batteries and some type of acid

 

The big problem with that is everyone told me it would need to be placarded if it was actually inhalation hazard and since it wasn’t placarded, you can take it on that restricted road. But my question is why would it say 6.1 if it’s not really inhalation hazard? Can 6.1 be poison/toxic but NOT inhalation hazard?