Subclass 1.1
Explosives with a high risk of explosion. The high explosion risk affects all the cargo at the same time.
Subclass 1.4
Materials with a low explosion risk. The risk of explosion is mainly limited to the package they are contained in. The materials inside the package do not pose an explosion risk in the event of an external fire threat.
Subclass 1.2
Materials with a risk of explosion through a connected route (dispersion, scattering, etc.). They do not pose a high explosion risk.
Subclass 1.5
Explosives independent of external influences. Although materials in this group have a high explosion risk, the risk of them being affected and exploding under normal transport conditions is very low.
Subclass 1.3
Materials with a greater risk of fire. They have low explosion risks, whether high or connected.
Subclass 1.6
Extremely insensitive materials with no high explosion risks. This class contains materials that can trigger explosions, but there is no risk of accidental explosions.
CLASS 2: GASES
Subclass 2.1 Flammable Gases
Materials that are in a gaseous state below 20°C (68°F) and have a pressure of 101.3 kPa (14.7 psi). These materials are flammable at 101.3 kPa (14.7 psi) pressure and air mixtures below 13%. Alternatively, they are flammable in at least 12% air mixtures and 101.3 kPa (14.7 psi) pressure regardless of the lower limit.
Subclass 2.2 Non-Flammable, Non-Toxic Gases
Materials with a risk of explosion through a connected route (dispersion, scattering, etc.). This class includes compressed gases, liquefied gases, compressed cryogenic gases, compressed gases in solution, and oxidizing gases. They are effective materials that are neither flammable nor toxic and are not classified in classes 2.1 and 2.3 at 20°C (68°F) with a pressure content of 280 kPa (40.6 psia).
Subclass 2.2 Oxygen Gas
This marking is an optional label for class 2.2. It is used for oxygen in gas or liquid form. Oxygen is not inherently flammable; however, it needs to be present for combustion to occur in the environment. Higher concentrations of oxygen increase the risk and power of explosions.
CLASS 3: FLAMMABLE LIQUIDS
Class 3 Flammable Liquid
Materials that are in a gaseous state below 20°C (68°F) and have a pressure of 101.3 kPa (14.7 psi). These materials are flammable at 101.3 kPa (14.7 psi) pressure and air mixtures below 13%. Alternatively, they are flammable in at least 12% air mixtures and 101.3 kPa (14.7 psi) pressure regardless of the lower limit.
CLASS 4: FLAMMABLE SOLIDS AND OTHER MATERIALS
Class 4.1 Flammable Solids and Other Materials
Materials included in Class 1 but classified as effective explosives or specifically included in this class by the manufacturer. These are solids that are inherently flammable. These materials can ignite through friction and have burning speeds exceeding 2.2 mm (0.087 inches) per second. Metal powders that can ignite spontaneously and react entirely within 10 minutes or less are also included in this class.
Class 4.2 Flammable Solids
Pyrophoric materials are substances that ignite spontaneously. These are materials that ignite or heat up without requiring an additional energy source when they come into contact with air within the fifth minute or when they come into contact with air.
Class 4.3 Substances Emitting Flammable Gases on Contact with Water
Also known as Substances Dangerous When Wet, these are materials that emit flammable or toxic substances upon contact with water. The hazard criterion is to emit more than 1 liter of gas per hour per kilogram of material.
CLASS 5: OXIDIZING AGENTS THAT INCREASE THE RISK OF COMBUSTION BY RELEASING OXYGEN
Class 5.1 Oxidizing Agents Releasing Oxygen to Increase Combustion Risk
These materials release oxygen to facilitate or accelerate the combustion of other materials.
Class 5.2 Organic Peroxides
Organic peroxides (Class 5.2) are materials containing oxygen in the form of O-O. These can be considered derivatives of hydrogen peroxide and are produced by the displacement of one or more hydrogen atoms in water with organic radicals.
CLASS 6: TOXIC SUBSTANCES
Class 6.1 Toxic Substances
Materials known to be harmful to humans during transport are classified as toxic substances. Additionally, materials that have been determined to be toxic in tests on animals, even if their harmful effects on humans have not been conclusively proven, with an LC50 value above 5000 ml/m3, are considered dangerous for humans and are included in this category.
Class 6.2 Infectious Substances
Materials that carry a pathogen known or suspected to cause disease. Pathogens are microorganisms (bacteria, viruses, fungi, etc.) or other agents that cause disease in humans or animals.
CLASS 7: RADIOACTIVE MATERIALS
Class 7 Radioactives
Materials carrying the Yellow Radioactive III (LSA-III) label. While some radioactive materials may not use this label, they must display posters indicating radioactivity.
CLASS 8: CORROSIVES
Class 8 Corrosives
Materials that, upon contact for a specified period, have a corrosive, thinning effect on human skin. Materials that have a corrosive effect on steel and aluminum are also included in this class.
CLASS 9: MISCELLANEOUS DANGEROUS SUBSTANCES
Class 9 Miscellaneous
Materials that pose a danger during transport but do not fall under defined classes are included in this class. This class includes the following materials: 1. Anesthetics or other harmful substances. These are substances that can cause enough discomfort to flight crews or ship personnel to interfere with their duties. 2. Materials with increased temperature levels, harmful substances, harmful residues, or materials that pose a risk of polluting the sea.