HazMat Tool — substance information Reference only — not a shipping paper, placard mandate, or CVI record.

Nitrogen, compressed

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 1066
Hazard class
2.2
Packing group
(multiple — see tabs)
ERG guide
ERG 121
Special provisions
Source
49 CFR §172 (15 June 2026)

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Nitrogen, compressed


Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the element bond to form N2, a colourless and odourless diatomic gas Wikipedia

Substance Data

Source: PubChem (HSDB, 16.12.2019)

CAS-Number

7727-37-9

Flash Point

Boiling Point


Emergency Response Guide No. 121

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

2.2
Non-toxic, non-flammable gases

(4) Identification number Help

UN 1066

(5) Packing Group Help

(6) Labels Help

Non-toxic, non-flammable gases (2.2)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.

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

(8A) Exceptions306, 307see 49 CFR §173.306, 307
(8B) Non-bulk302see 49 CFR §173.302
(8C) Bulk314, 315see 49 CFR §173.314, 315

(9) Quantity Limits Help

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

(10) Vessel stowage Help

(10A) Location
(10B) Other

Tires and tire assemblies,