UN number
UN 1789 — Hydrochloric acid
Last updated: 6 Jul 2026Reviewed by Ms. Rubab Nizami, Lead AVSEC Faculty
In short
UN 1789 is the UN number for hydrochloric acid, a dangerous good in Class 8. It is commonly corrosive acid used in cleaning and industry. For passengers: forbidden in passenger baggage.
- Proper shipping name
- Hydrochloric acid
- Class
- 8
- Packing group
- II/III
- Common use
- Corrosive acid used in cleaning and industry.
What is UN 1789?
UN 1789 identifies hydrochloric acid in international transport. It belongs to dangerous-goods Class 8, packing group II/III, and is used for corrosive acid used in cleaning and industry.
Can passengers carry Hydrochloric acid?
Forbidden in passenger baggage. Always follow your airline's dangerous-goods policy, since limits and approvals differ between carriers.