49 CFR 173.301 : Transportation (§ 1.1 To Parts 1581-1699) — (Parts 100-104 To § 177.870) — Other Regulations Relating To Transportation (Parts 100-104 To § 177.870) — Pipeline And Hazardous Materials Safety Administration, Department Of Transportation (Parts 100-104 To § 177.870) — Hazardous Materials Regulations (§ 171.1 To § 177.870) — Shippers - General Requirements For Shipments And Packagings (§ 173.1 To Appendix H To Part 173) — Gases; Preparation And Packaging (§ 173.300 To § 173.340) — General requirements for shipment of compressed gases and other hazardous materials in cylinders, UN pressure receptacles and spherical pressure vessels.