UN1971 — Methane, compressed Natural gas, compressed

Class 2.1

Quick facts: UN1971

What it is
Methane, compressed Natural gas, compressed or
Hazard class
2.1
Packing group
None assigned
Label
Division 2.1 - Flammable Gas
Packaging (49 CFR 173)
Exceptions §173.306 · Non-bulk §173.302
Air limit per package
Passenger aircraft: Forbidden · Cargo aircraft: 150 kg

Source: 49 CFR 172.101 Hazardous Materials Table — UN1971 (2025-01-01)

UN Number
UN1971
Hazard Class
2.1
Packing Group
Not assigned

Hazard Labels / Marks

  • Division 2.1 - Flammable 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 UN1971.

To verify your actual package — labels, marks, SDS and packaging — scan it with DG Inspector. It reads the real evidence in front of you and shows the reasoning so you can check it.

A reference lookup is a dictionary, not a compliance verdict. It tells you what UN1971 requires; it cannot confirm that your specific shipment meets those requirements.

Scan your package — Start Free