eCFR
49 CFR 178.347 — Specification DOT 407 Cargo Tank
Construction spec for DOT 407 tanks: solvents and other chemicals.
The construction specification DOT 407 cargo tanks are built to. The 407 replaced the MC 307. These tanks typically haul chemicals, such as solvents and plasticizers.
Open it when you need to know what a DOT 407 is supposed to be as built. For testing and inspecting a tank already in service, go to 49 CFR 180.407.
What a given tank may haul is set by the hazmat rules for each product, not by the tank type alone.
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