Dangerous goods quick reference guide - Class 2: Gases


Gases are divided into three divisions: 2.1: Flammable Gases: Ignite in air or contribute to fire; sensitive to temperature changes. Examples: Acetylene, butane, propane, LPG, hydrogen, aerosols.


2.2: Non-Flammable, Non-Toxic Gases: Can cause asphyxiation, oxidization, or explode under pressure. Examples: Carbon dioxide, helium, nitrogen, oxygen, argon.


2.3: Toxic Gases: Harmful or fatal if inhaled. Examples: Chlorine, fluorine, methyl bromide, hydrogen fluoride, sulphur dioxide.


Key Handling Guidelines: - Packing: Use tanks/cylinders per manufacturer’s instructions; never use damaged or overfilled containers; do not repackage without expert advice.


- Storing: Store in well-ventilated, temperature-controlled areas; keep away from heat sources; use leak detectors; inspect regularly; train staff in emergency response.


- Transporting: Ensure ventilation during transport; secure tanks/cylinders tightly; avoid ignition sources near flammable gases; have a security plan for high-consequence cargo; comply with CTU Code.


Handling:


Never throw, drop, or drag cargo; maintain emergency response plans; communicate clearly across the supply chain.


Dangerous goods quick reference guide - Class 3: Flammable liquids


Class 3 dangerous goods include flammable liquids that pose risks such as property damage, cargo damage, injury, environmental harm, insurance invalidation, and potential criminal prosecution.


Common Types & Examples: Alcohol-based products: Methanol, Ethanol. Fuels: Petrol, Gasoline, Kerosene, Diesel.


Industrial products: Adhesives, Paints, Turpentine, Printing inks, Varnishes, Perfumery products.


Solvents: Methyl ethyl ketone (MEK), Acetone.


Flammable liquids are grouped into Packing Groups I, II, III based on boiling and flash points. Some cargoes (e.g., paint) can fall into multiple groups.


Key Handling Guidelines: - Packing: Use only approved tanks/packaging; avoid damaged or contaminated containers; never overfill; keep spill management equipment nearby; control ignition sources.


- Storing: Store in well-ventilated, temperature-controlled areas; away from heat and ignition sources; close to ground; inspect regularly; train staff in emergency response; alert DG competent person if issues arise.


- Transporting: Segregate from other cargoes; follow manufacturer’s instructions; secure containers; comply with CTU Code; avoid ignition sources; obtain permissions for public/built-up areas.


114 | ISSUE 115 | MAR 2026 | THE REPORT Handling:


Never expose to extreme temperatures; never throw, drop, or drag cargo; maintain emergency response plans; communicate clearly across the supply chain.


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