UN1805 — Phosphoric acid solution

Class 8

Quick facts: UN1805

What it is
Phosphoric acid solution
Hazard class
8
Packing group
III
Label
Class 8 - Corrosive
Packaging (49 CFR 173)
Exceptions §173.154 · Non-bulk §173.203 · Bulk §173.241
Air limit per package
Passenger aircraft: 5 L · Cargo aircraft: 60 L
Special provisions
A7, IB3, N34, T4, TP1

Source: 49 CFR 172.101 Hazardous Materials Table — UN1805 (2025-01-01)

UN Number
UN1805
Hazard Class
8
Packing Group
III

Hazard Labels / Marks

  • Class 8 - Corrosive

Also searched as

phosphoric acid solutionorthophosphoric acidh3po4 solutionrust remover acidfood grade phosphoric acidphosphoric acid

Note

Solution form; PG III. Solid phosphoric acid is a separate UN entry (UN3453).

Source: UN Model Regulations Dangerous Goods List · 23rd revised edition (2023)

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 UN1805.

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