Yep, class 8 plus the color scheme and icons give away some of the mysteries within even before looking up the UN/NA number. The horseshoe shape means it’s insulated and doesn’t always indicate corrosive but another good one to look for has a series of reinforcing rings that are easy to spot if you see it from the side. Ribbed for nobody’s pleasure.

MC 312 / DOT 412 trailer

If you like mnemonics that are almost never really useful outside of tests:
Every Good Fire Fighter Ought To Read Comics Monthly.
Explosives, Gases, Flammable liquids, Flammable solids, Oxidizers, Toxic materials, Radioactive materials, Corrosive, Miscellaneous.

Having two Fs in there isn’t ideal but it’s easy enough to keep them straight if you remember that liquid is (often) between gas and solid. This concludes today’s hazmat awareness mini-refresher.