UN 2977: Radioactive material, uranium hexafluoride, fissile

DOT Classification and Shipping

UN 2977 is assigned the proper shipping name Radioactive material, uranium hexafluoride, fissile in the U.S. DOT Hazardous Materials Table (49 CFR 172.101). It is classified as a Class 7 Radioactive Material material. Required label(s): 7, 8, 6.1.

Packing group indicates the degree of danger within a hazard class: PG I is high danger, PG II medium, PG III low. The proper shipping name, hazard class, UN number, and packing group together form the basic shipping description that must appear on shipping papers and, where required, on the package and placard.

Emergency Response (ERG Guide 166)

Hazards: RADIOACTIVE. CORROSIVE. Reacts with water producing toxic and corrosive HF gas. High radiation.

Fire: DO NOT use water on material. Use dry chemical, CO2 for surrounding fire.

Spill: Do not touch. Fully encapsulating suit. Keep material dry. Contain runoff.

Chemical and Physical Properties

Need the full interactive record? Open UN 2977 in the SpillNerd lookup tool for the live database entry with placard graphics, GHS pictograms, full segregation tables, and synonym search. For another material, use the UN number and chemical lookup.

Reference data compiled from the DOT Hazardous Materials Table (49 CFR 172.101), the 2024 Emergency Response Guidebook, and public chemical databases (PubChem, NIOSH, EPA). Always verify the correct shipping description against the current regulation and the manufacturer's SDS Section 14 before shipping.