UN number
UN 1017 — Chlorine
Last updated: 6 Jul 2026Reviewed by Ms. Rubab Nizami, Lead AVSEC Faculty
In short
UN 1017 is the UN number for chlorine, a dangerous good in Class 2.3. It is commonly toxic gas used in water treatment and industry. For passengers: forbidden in passenger baggage.
- Proper shipping name
- Chlorine
- Class
- 2.3
- Common use
- Toxic gas used in water treatment and industry.
What is UN 1017?
UN 1017 identifies chlorine in international transport. It belongs to dangerous-goods Class 2.3, and is used for toxic gas used in water treatment and industry.
Can passengers carry Chlorine?
Forbidden in passenger baggage. Always follow your airline's dangerous-goods policy, since limits and approvals differ between carriers.