Shipping Classification
Air, compressed
What this means
Air, compressed appears on the federal Hazardous Materials Table (49 CFR §172.101), the table that governs how a material must be classified, packaged, and labeled for transport.
IdentificationPackagingTransport limitsVessel stowage
Hazard class / division
Class 2.2
UN / NA identification number
Packing group
N/A
Label codes
2.2
Packaging — exceptions
306, 307
Packaging — non-bulk
302
Packaging — bulk
302
Passenger aircraft / rail limit
75 kg
Cargo aircraft only limit
150 kg
Vessel stowage location
A
Vessel stowage — other
None
Special provisions (§172.102)
78 — Mixtures of nitrogen and oxygen containing not less than 19.5% and not more than 23.5% oxygen by volume may be transported under this entry when no other oxidizing gases are present. A Division 5.1 subsidiary hazard label is not required for any concentrations within this limit. Compressed air containing greater than 23.5% oxygen by volume must be shipped using the description “Compressed gas, oxidizing, n.o.s., UN3156.”
Packaging citations reference sections of 49 CFR Part 173 not expanded here. View the full official table on eCFR.gov.
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Source: Hazardous Materials Table (49 CFR §172.101) and Special Provisions (49 CFR §172.102), current as retrieved from eCFR.gov. View official table.