IMO classes

CLASSIFICATIONS OF DANGEROUS GOODS DANGEROUS GOODS

   The substances and material with physical and chemical properties of the highest rate of danger are related to the Category of the Dangerous Goods under All-Union Standard 19433-88 hereinafter “Dangerous Goods”:
• Class 1 Explosives excluding sub-classes 1.4, 1.5 и 1.6;
• Class 7 Radioactive Substances;
• Non-flammable non-toxic gases oxidize;
• Toxic gases oxidize;
• Toxic gases oxidize, acid and/or corrosive; 6. Flammable liquids with ignition temperature below -18oC toxic;
• Flammable liquids with ignition temperature below -18oC - acid, and/or corrosive;
• Flammable liquids with ignition temperature from -18oC to +23oC - acid and/or corrosive;
• Flammable liquids with ignition temperature from -18oC to +23oC - toxic acid and/or corrosive;
• Flammable solid substances - acid and/or corrosive;
• Flammable solid substances – self-destroying at the temperature of below +50oC in danger of packaging damage.
•Flammable solid substances – toxic;
• Flammable solid substances – acid and/or corrosive;
• Substances which effervesce flammable gas due to interaction with water - easy inflammable;
• Substances which effervesce flammable gas due to interaction with water self-inflammable and toxic;
• Substances which effervesce flammable gas due to interaction with water - easy inflammable, acid and/or corrosive;
• Oxidizing substances – toxic, acid and/or corrosive;
• Organic peroxides – explosive, self-destroying at the temperature of below +50oC;
• Organic peroxides –self-destroying at the temperature of below +50oC;
• Organic peroxides – explosive;
• Organic peroxides – with no other dangerous peculiarities;
• Organic peroxides – with acid danger for eyes;
• Organic peroxides – flammable;
• Organic peroxides – flammable, with acid danger for eyes;
• Toxic substances – volatile, with no other dangerous peculiarities;
• Toxic substances – volatile, inflammable at the temperature below +23oC;
• Toxic substances – volatile, inflammable at the temperature above +23oC, but no more than +6GC;
• Toxic substances – volatile, acid and/or corrosive;
• Acid and/or corrosive substances – acidiferous, toxic and oxidizing;
• Acid and/or corrosive substances – acidiferous, oxidizing;
• Acid and/or corrosive substances – acidiferous, toxic;
• Acid and/or corrosive substances – with basic properties, inflammable at the temperature from +23oC till +61oC;
• Acid and/or corrosive substances – with basic properties, oxidizing;
• Acid and/or corrosive substances – miscellaneous, toxic and oxidizing;
• Acid and/or corrosive substances – miscellaneous, inflammable at the temperature below +23oC;
• Acid and/or corrosive substances – miscellaneous, inflammable at the temperature from +23oC till +61oC;
• Acid and/or corrosive substances – miscellaneous, toxic.

Dangerous Goods under All-Union Standard 19433-88, their classifications and marking:
• Explosives;
• Gases: compressed, liquefied and resoled under compression;
• Flammable Liquids;
• Flammable solids;
• Substance which emits flammable gas in contact with water;
• Oxidizing substance & Organic peroxide;
• Toxic substance & Infectious substance;
• Radioactive material;
• Corrosive substances;
• Miscellaneous dangerous substances
Classifications
Subjects covered in the guide below:
The substances are ranged into classes according to their physical and chemical properties, types and grade of danger while transportation and divided into sub-classes, categories and groups
CLASS 1 – explosives, which can cause explosions, fire, as well as the equipment containing explosives and explosive ingredients, pyrotechnic agents and materials;
IMO 1.1 - Explosives with a mass explosion hazard;
IMO 1.2 - Explosives with a severe projection hazard;
IMO 1.3 - Explosives with a fire, blast or projection hazard but not a mass explosion hazard;
IMO 1.4 - Consists of explosives that present a minor explosion hazard. The explosive effects are largely confined to the package and no projection of fragments of appreciable size or range is to be expected. An external fire must not cause virtually instantaneous explosion of almost the entire contents of the package;
IMO 1.5 - Consists of very insensitive explosives. This division is comprised of substances which have a mass explosion hazard but are so insensitive that there is very little probability of initiation or of transition from burning to detonation under normal conditions of transport;
IMO 1.6 - Consists of extremely insensitive articles which do not have a mass explosive hazard. This division is comprised of articles which contain only extremely insensitive detonating substances and which demonstrate a negligible probability of accidental initiation or propagation.
CLASS 2 - Gases which are compressed, liquefied or dissolved under pressure as detailed below. Some gases have subsidiary risk classes; poisonous or corrosive.
Absolute pressure at the temperature of +50oС is/above 3 KGS/cm;
Thermal critical point below +50oС. According their physical condition the gasses are divided by:
• Compressed, critical point below -10oС;
• Liquefied, critical point at or above -10oС, but below 70oС;
• Liquefied, critical point at or above 70oС;
• Dissolved under pressure;
• Liquefied by refrigerant sub-cooling;
• Mechanical gas (aerosol ) and compressed gas under special directions.
Sub-class:
IMO 2.1 - Nonflammable Gas;
IMO 2.2 - Nonflammable Toxic Gas;
IMO 2.3 - Flammable Gas;
IMO 2.4 - Flammable Poisonous by Inhalation Gas;
IMO 2.5 – Chemically Unstable;
IMO 2.6 - Chemically Unstable Poisonous by Inhalation.
CLASS 3 - A flammable liquid means a liquid having a flash point of not more than 60.5°C (141°F), or any material in a liquid phase with a flash point at or above 37.8°C (100°F) that is intentionally heated and offered for transportation or transported at or above its flash point in a bulk packaging, with the following exceptions:
IMO 3.1 – flammable liquids with the low ignition temperature and liquids with inflammable temperature below -18oC under closed cup or with the inflammable temperature combined with the other dangerous properties, excluding easy-flammability;
IMO 3.2 – inflammable liquids with the average ignition temperature - liquids with the ignition temperature from -18oC till +23oC under closed cup;
IMO 3.3 – inflammable liquids with the high ignition temperature - liquids with the ignition temperature from +23oC till +61oC including those under closed cup;
CLASS 4 – inflammable solids or substance (excluding those that are classified as explosives) able to ignite from other sources, as a result of friction, moister absorption, spontaneous chemical reactions and heat during transportation;
IMO 4.1 – self-reactive materials and inflammable solids able to ignite from short-term exposure of the external sources of fire (such as sparks, flame, friction) and aggressively burn;
IMO 4.2 – spontaneously combustible material able to heat and inflame spontaneously while usual conditions of transportation;
IMO 4.3 – substances which, in contact with water, emit flammable gases.
CLASS 5 – oxidizing substances (agents) and organic peroxides able to emit oxygen easily, support burning as well as cause ignition and explosion under suitable conditions or in mixture;
IMO 5.1 – oxidizing substances (agents) non-flammable by themselves, but by yielding oxygen increase the risk and intensity of fire
IMO 5.2 - organic peroxides - most will burn rapidly and are sensitive to impact or friction
CLASS 6 –poisonous (toxic) and infectious substances known to cause death, poisoning or disease interiorly or by interaction with the skin or the mucous membrane;
IMO 6.1 – toxic, poison substances able to cause intoxication by inhale (evaporation, dust) interiorly or by interaction with the skin;
IMO 6.2 – infectious substance material is known to contain or suspected of containing a pathogen which is dangerous for human health and animals;
CLASS 7 – radioactive substances at bulk specific activity over 70 kBk/kg (2 nKy/g)
CLASS 8 – corrosive substances cause skin injury, mucous membrane injury of eyes and airway passages, metals corrosion and means of transportation damages, constructions and cargos, as well as cause spontaneous ignition by the interaction with organic materials and some chemical sunstances;
IMO 8.1 – acid;
IMO 8.2 - alkalies;
IMO 8.3 – other corrosives.
CLASS 9 – miscellaneous dangerous substances and articles with relatively low level of danger while transportation not pertaining to any class above, but are to be covered by certain regulations of the transportation and storage;
IMO 9.1 – solids and liquid substances and materials whose properties do not cover by classes 3 and 4, but under certain conditions are able to be inflammably dangerous (flammable liquids with the temperature of ignition from +61oC till +100oC under cover cup, fiber etc.)
IMO 9.2 – substances are known to become acid and corrosive under certain conditions.