Flammable Gas Hazard Symbol (UN Class 2.1) - Safety Label Guide #1688840 (License: Personal Use)

This is the official United Nations Globally Harmonized System (GHS) and DOT/ADR hazard placard for Class 2.1: Flammable Gases. The red background with black flame icon over a horizontal line signifies substances that ignite easily at ambient temperature and pressure, such as propane or butane. The numeral “2” in the lower corner denotes Division 2 of Class 2 (gases), specifically flammable gases per regulatory standards.

Used on transport vehicles, storage tanks, and packaging for flammable gases to alert handlers, emergency responders, and regulators; matches user intent for safety training, hazmat compliance, logistics labeling, or regulatory reference.