USDOT Label Table for hazmat packages General labeling requirements table from 172.400 This is the full section of 172.400 general labeling requirments and the table that tells you which label goes with what hazard class or division of material. Specifics of labels, excluding color are found in 172.411-172.450. You can also read our article on hazmat labeling. Read more...   Hazmat Labeling What are labels and when should they appear on the package? Labels look like mini placards that communicate the hazard inside a package. Although there are some exceptions, packages that contain a hazardous material should have labels on them. Read more...