UN1955 — Compressed gas, toxic, n.o.s.

Class 2.3

Quick facts: UN1955

What it is
Compressed gas, toxic, n.o.s. Inhalation Hazard Zone A
Hazard class
2.3
Packing group
None assigned
Label
Division 2.3 - Toxic Gas
Packaging (49 CFR 173)
Non-bulk §173.192 · Bulk §173.245
Air limit per package
Passenger aircraft: Forbidden · Cargo aircraft: Forbidden
Special provisions
1

Source: 49 CFR 172.101 Hazardous Materials Table — UN1955 (2025-01-01)

UN Number
UN1955
Hazard Class
2.3
Packing Group
Not assigned

Hazard Labels / Marks

  • Division 2.3 - Toxic Gas

Source: 49 CFR §172.101 Hazardous Materials Table · 49 CFR §172.101 (2025-01-01)

Reference data transcribed from the published Dangerous Goods List. It is not legal advice and may not capture entry-specific exceptions, special provisions or packing-group ranges. Always verify against the current regulation edition for a specific shipment.

This is the reference entry for UN1955.

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