# Hazardous materials designated in the 49 CFR 172.101 Table — Postal shipping restrictions by item category For Hazardous materials designated in the 49 CFR 172.101 Table, carrier is US DOT (49 CFR, all modes); restriction type is restricted; scope is transportation in commerce (US); conditions is The Hazardous Materials Table designates listed materials as hazardous; for each material it identifies the hazard class or specifies that the material is forbidden in transportation, and specifies labeling, packaging, aircraft quantity limits and vessel stowage, recorded from its source on 2026-08-10. - **Item category:** Hazardous materials designated in the 49 CFR 172.101 Table _(verified: appears in the quote below)_ - **Carrier:** US DOT (49 CFR, all modes) _(our reading, not quoted from the source)_ - **Restriction type:** restricted _(our reading, not quoted from the source)_ - **Scope:** transportation in commerce (US) _(our reading, not quoted from the source)_ - **Conditions:** The Hazardous Materials Table designates listed materials as hazardous; for each material it identifies the hazard class or specifies that the material is forbidden in transportation, and specifies labeling, packaging, aircraft quantity limits and vessel stowage. _(verified: appears in the quote below)_ ## What the source says > hazard class or specifies that the material is forbidden in transportation , and gives the ## Source - https://www.law.cornell.edu/cfr/text/49/172.101 Last verified: 2026-08-10. Review by: 2027-08-10. Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).