HazMat Tool — substance information

Radioactive material, uranium hexafluoride, fissile

HMT May 2026

On this page

Source: 49 CFR §172 (2026/05)

UN 2977

n/a

(9A) Passenger aircraft/rail	n/a
(9B) Cargo aircraft only	n/a

(10A) Location

Stowage category “B” means

(i) The material may be stowed “on deck” or “under deck” on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and
(ii) “On deck only” on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.

(10B) Other

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

	Must not be loaded, transported, or stored together in the same vehicle or facility.
	May be loaded, transported, or stored together.
	May be loaded, transported, or stored together only with restrictions.

UN / ID	Proper shipping name	Hazard class
UN 3507	Uranium hexafluoride, radioactive material, excepted package, less than 0.1 kg per package, non-fissile or fissile-excepted	6.1
UN 2978	Radioactive material, uranium hexafluoride non fissile or fissile-excepted	7
UN 1858	Hexafluoropropylene compressed or Refrigerant gas R 1216	2.2
UN 2193	Hexafluoroethane, or Refrigerant gas R 116	2.2
UN 2194	Selenium hexafluoride	2.3
UN 1080	Sulfur hexafluoride	2.2
UN 2195	Tellurium hexafluoride	2.3
UN 2196	Tungsten hexafluoride	2.3
UN 2552	Hexafluoroacetone hydrate, liquid	6.1
UN 3436	Hexafluoroacetone hydrate, solid	6.1