HazMat Tool — substance information

Xenon, compressed

HMT May 2026
UN / ID
UN 2036
Hazard class
2.2
Packing group
ERG guide
ERG 121
Special provisions
Source
49 CFR §172 (2026/05)

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Xenon, compressed


Xenon is a chemical element; it has symbol Xe and atomic number 54. It is a dense, colorless, odorless noble gas found in Earth's atmosphere in trace amounts. Although generally unreactive, it can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized. Xenon is used in flash lamps and arc lamps, and as a general anesthetic. The first excimer laser design used a xenon dimer molecule (Xe2) as the lasing medium, and the earliest laser designs used xenon flash lamps as pumps. Wikipedia

Emergency Response Guide No. 121

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

2.2
Non-toxic, non-flammable gases

(4) Identification number Help

UN 2036

(5) Packing Group Help

n/a

(6) Labels Help

Non-toxic, non-flammable gases (2.2)

(7) Special Provisions (§172.102) Help

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions306, 307see 49 CFR §173.306, 307
(8B) Non-bulk302see 49 CFR §173.302
(8C) BulkNone

(9) Quantity Limits Help

(9A) Passenger aircraft/rail75 kg
(9B) Cargo aircraft only150 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other n/a

Segregation chart for load, transport, and storage

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

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

Similar substances

UN / IDProper shipping nameHazard class
UN 2591Xenon, refrigerated liquid (cryogenic liquids)2.2