UN2055 — Styrene monomer, stabilized

Class 3

Quick facts: UN2055

What it is
Styrene monomer, stabilized
Hazard class
3
Packing group
III
Label
Class 3 - Flammable Liquid
Packaging (49 CFR 173)
Exceptions §173.150 · Non-bulk §173.203 · Bulk §173.242
Air limit per package
Passenger aircraft: 60 L · Cargo aircraft: 220 L
Special provisions
387, B1, IB3, T2, TP1

Source: 49 CFR 172.101 Hazardous Materials Table — UN2055 (2025-01-01)

UN Number
UN2055
Hazard Class
3
Packing Group
III

Hazard Labels / Marks

  • Class 3 - Flammable Liquid

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 UN2055.

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