To placard or not to placard

Years ago, I had hazmat on my license. I dropped it at renewal time because I didn't want to mess with the hassle. Here's my situation. I know from memory (unless they changed it) up to a certain weight no placard required. I turned down a load because the load was BBQ lighter fluid. Something along the lines of around 1700 bottles of it. Lighter fluid wouldn't it fall under class III, but was I wrong for refusing it?

 

They had the bills printed out. If I read it correctly, 21 pallets(I don't know how many per pallet) of boxes with 12 32oz bottles per box.

 

I mean, I looked the bol over, saw the number of pallets, I guess what caught my eye was it said a net weight of a bit under 37k for the load.

 

That's what I was thinking. It only showed the 21 pallets, the net weight of around 37k. I asked the shipper what the abbreviation clf was he said charcoal lighter fluid. I could see a pallet of it but he said that was the entire load, so I turned it down and left.