Dangerous goods
Dangerous Goods Class 5.2 — Organic Peroxide
Last updated: 6 Jul 2026Reviewed by Ms. Rubab Nizami, Lead AVSEC Faculty
In short
Dangerous-goods Class 5.2 is organic peroxide. Unstable substances that can burn rapidly, explode or react, such as some hardeners and catalysts. Its hazard label is a red-and-yellow diamond showing a flame.
- Class
- 5.2
- Label colour
- Red-and-yellow
- Symbol
- Flame
- Passenger baggage
- Forbidden in passenger baggage.
What are examples of Class 5.2?
Examples include UN 3101 Organic peroxide type B, liquid. Unstable substances that can burn rapidly, explode or react, such as some hardeners and catalysts.
How is Class 5.2 handled and labelled?
Temperature-controlled; the label is red on top, yellow on the bottom, with a flame. For passengers: forbidden in passenger baggage.