CLASSIFICATION OF FLAMMABLE CODES

1.1 — Mass Explosion Hazard

Explosives with mass detonation risk. Substances in this class carry the risk of instantaneous mass explosion and represent the highest hazard level.

1.2 — Projection Hazard, No Mass Explosion

Explosives with fragment projection risk but no mass explosion. These substances can project fragments at high velocity.

1.3 — Fire Hazard, Minor Blast Hazard

Substances with fire hazard and low detonation strength. Primarily creates hazard through heat effects.

1.4 — Minor Explosion Hazard

Explosives with slight explosion risk where effects are confined to packaging. Creates limited hazard.

1.5 — Very Insensitive Explosives with Mass Explosion Hazard

Very insensitive explosive substances that are very difficult to detonate. Mass explosion risk is low under normal conditions but increases under fire.

1.6 — Extremely Insensitive, No Mass Explosion Hazard

Extremely insensitive substances with no mass explosion risk. The lowest risk category of explosives.

2.1 — Flammable Gases

Gases that are gaseous at 20°C and below with low flammability limits. Can form explosive mixtures when mixed with air.

2.2 — Non-Flammable, Non-Toxic Gases

Compressed, liquefied or cryogenic gases. Not flammable or toxic but creates pressure hazard.

2.3 — Toxic Gases

Gases harmful to human health that pose serious danger during transport. Can be lethal if inhaled.

3.0 — Flammable Liquids

Liquids with flash point below 60.5°C. Can easily ignite and create fire hazard. This class includes petroleum products, alcohol, solvents and similar substances.

4.1 — Flammable Solids

Solid substances that can ignite by friction and burn rapidly. Can easily ignite through friction or heat during transport.

4.2 — Spontaneously Combustible

Substances that spontaneously ignite upon contact with air. Create fire hazard even under normal transport conditions.

4.3 — Dangerous When Wet

Substances that react with water to emit flammable or toxic gas. Dangerous even in humid environments.

5.1 — Oxidizers

Substances that accelerate combustion by releasing oxygen. While not combustible themselves, they support and intensify the combustion of other materials.

5.2 — Organic Peroxides

Substances containing O–O bond, derivatives of hydrogen peroxide. Thermally unstable and carry risk of explosive decomposition.

6.1 — Toxic Substances

Substances harmful to humans, proven toxic in laboratory tests. Can cause poisoning through ingestion, inhalation or skin contact.

6.2 — Infectious Substances

Substances known or suspected to carry pathogens. Contains or is suspected to contain disease-causing agents.

7.0 — Radioactive Materials

Substances exhibiting radioactivity. Have special labeling, packaging and transport requirements. Emit ionizing radiation.

8.0 — Corrosive Materials

Substances that cause chemical damage to human skin, steel and aluminum. Includes substances like acids and bases. Causes severe burns and corrosion.

9.0 — Miscellaneous Dangerous Substances

Substances that do not fit other classes but pose danger during transport. Includes anesthetics, heated substances, marine pollutants, environmentally hazardous substances and lithium batteries.