Prohibited Items List

List Of Prohibited Articles- Part IV

Source: IATA- Dangerous Goods Regulations

Definitions of nine classes of dangerous goods

Class 1: Explosives

Class 1 comprises

(a) Explosive substances (a substance which is not itself an explosive but which can form an explosive atmosphere of gas, vapour or dust is not included in Class 1), except those that are too dangerous to transport or those where the predominant hazard is appropriate to another class;

(b) Explosive articles, except devices containing explosive substances in such quantity or of such a character that their inadvertent or accidental ignition or initiation, during transport, will not cause any effect external to the device either by projection, fire, smoke, heat or loud noise; and

(c) Articles and substances not mentioned under (a) and (b) above which are manufactured with a view to producing a practical, explosive or pyrotechnic effect.

Division 1.1

Articles and substances having a mass explosion hazard (a mass explosion is one which affects almost the entire load virtually instantaneously).

Division 1.2

Articles and substances having a projection hazard but not a mass explosion hazard.

Division 1.3

Articles and substances having a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard. This division comprises articles and substances that:

(a) Give rise to considerable radiant heat; or

(b) Burn one after another, producing minor blast and/or projection effects.

Division 1.4

Articles and substances that present no significant hazard. The division comprises articles and substances which present only a small hazard in the event of ignition or initiation during transport. The effects are largely confined to the package and no projection fragments of appreciable size or range is to be expected. An external fire must not cause virtually instantaneous explosion of almost the entire content of the package.

Division 1.5

Very insensitive substances, having a mass explosion hazard, which are so insensitive that there is very little probability of initiation or of transition from burning to detonation under normal conditions of transport.

Division 1.6

Extremely insensitive articles which do not have a mass explosion hazard. This division compromises articles which contain only extremely insensitive detonating substances and which demonstrate a negligible probability of accidental initiation propagation.

Note: the Risk from articles of Division 1.6 is limited to the explosion of a single article.

Class 2: Gases

A gas is a substance which:

(a) At 50°C (122°F) has a vapour pressure greater than 300 kPa (3.0 bar, 43.5 lb/in); or

(b) Is completely gaseous at 20°C (68°F) at a standard pressure of 101.3 kPa (1.01 bar, 14.7lb/in).

Division 2.1 Flammable gas

Gases which at 20°C (65°F) and a standard pressure of 101.3 kPa (1.01 bar, 14.7lb/in).

(a) Are ignitable when in a mixture of 13% or less by volume with air; or

(b) Have a flammable range with air at least 12 percentage points regardless of the lower flammable limit. Flammability must be determined by tests or by calculation in accordance with methods adopted by ISO (see ISO STANDARD 10156:1990). Where insufficient data are available to use these methods, tests by a comparable method recognized by appropriate national authority must be used.

Division 2.2 Non-Flammable, non-toxic gas

Gases which are transported at a pressure not less than 280 kPa at 20°C, or as refrigerated liquids, and which:

(a) Are asphyxiant- gases which dilute or replace the oxygen normally in the atmosphere; or

(b) Are oxidizing - gases which may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does; or

(c) Do not come under the other divisions.

Division 2.3 Toxic gas

Gases which:

(a) Are known to be so toxic or corrosive to humans as to pose a hazard to health: or

(b) Are presumed to be toxic or corrosive to humans because the have LC50 value equal to or less than 5000 mL/m3(ppm) when tested in accordance with the criteria for Inhalation Toxicity.

Class 3: Flammable liquids

This class has no subdivisions. It comprises liquids or mixtures of liquids or liquids containing solids in solution or in suspension (for example paints, varnishes, lacquers, etc., but not including substances otherwise classified on account of their dangerous characteristics) which give off a flammable vapour temperatures of not more than 60.5°C(141°'F) closed-cup test or not more than 65.5°C (150°F) open-cup test normally referred to as the flash point.

Liquids described above flash point exceeding 35°C (95°F) need not be considered flammable liquids for the purposes of these Regulations, if:

(a) They do not sustain combustion when subjected to the method of testing for combustibility of Class 3 substances ;or

(b) Their fire point according to ISO 2592 is greater than 100°C (212°F); or

(c) They are miscible solutions with a water content of more than 90% by weight.

Liquids offered for transport at temperatures at or above their flash point are considers as flammable liquids.

Substances that are transported or offered for transport at elevated temperatures in a liquid state and which give off a flammable vapour at a temperature at or below the maximum transport temperature (i.e. the maximum temperature likely to be encountered by the substance in transport) are also considered to be flammable liquids. This also includes perfumes.

Class 4: Flammable solids; substances liable to spontaneous combustion; substances which, in contact water, emit flammable gases

Division 4.1 Flammable solids; self reactive and related substances; desensitized explosives

Solids which, under conditions encountered in transport, are readily combustible or may cause or contribute to fire through friction; self-reactive and related substances which are liable to undergo a strongly exothermic reaction; desensitized explosives which may explode if not diluted sufficiently. Division 4.1 contains:

- flammable solids;

- self-reactive and related substances;

- desensitized explosives.

Flammable solids are readily combustible solids and solids which may cause fire through friction. Readily combustible solids are powdered, granular or pasty substances which are dangerous if they can be easily ignited by brief contact with an ignition source, such as a burning match, and if the flame spreads rapidly. The danger may not only come from the fire but also from toxic combustion products. Metal powders are especially dangerous because of the difficulty of extinguishing a fire since normal extinguishing agents such as carbon dioxide or water can increase the hazard.

Self- reactive substances: Thermally unstable substances liable to undergo a strongly exothermic decomposition even without the participation of oxygen (air). The following substances must not be considered to be self-reactive substances of Division 4.1:

- Explosives according to criteria of Class 1;

- Oxidizing substances according to the assignment procedure for Oxidizing Solids;

- Organic peroxides according to the criteria of Division 5.2;

- Substances where the heat of decomposition is less than 300 J/g; or

- Substances where the self- accelerating decomposition temperature is greater than 75°C for 50 kg package.

Related substances are distinguished from self-reactive substances by having a self-accelerating decomposition temperature greater then 75°C. They are liable to undergo, as are self-reactive substances, a strongly exotherming decomposition. They are also liable, in certain packagings, to meet the criteria for substances of Class 1.

Division 4.2 Substances liable to spontaneous combustion

Substances which are liable to spontaneous heating under normal conditions encountered in transport, or to heating up in contact with air, and being then liable to catch fire.

The following types of substances are classified in Division 4.2:

- Pyrophoric substances;

- Self-heating substances.

Division 4.3 Substances which, in contact with water, emit flammable gases

Substances which, in contact with water, emit flammable gases (Dangerous when wet). Substances which, by interaction with water, are liable to become spontaneously flammable or to give off flammable gases in dangerous quantities.

These are described in the List of Dangerous Goods as "Water-reactive" substances.

Class 5: Oxidizing substances and organic peroxides

Division 5.1 Oxidizing substances

Substances which, themselves are not necessarily combustible, but may generally cause or contribute to the combustion of other material by yielding oxygen.

Division 5.2 Organic peroxides

Organic substances which contain the bivalent structure -O-O- and may be considered derivatives of hydrogen peroxide in which one or both of the hydrogen atoms have been replaced by organic radicals.

Organic peroxides are thermally unstable substances which may undergo exothermic, self-accelerating decomposition. In addition, they may have one or more of the following properties:

- be liable to explosive decomposition;

- burn rapidly;

- be sensitive to impact or friction;

- react dangerously with other substances;

- cause damage to the eyes

Class 6: Toxic and infectious substances

Division 6.1 Toxic substances

Substances which are liable to cause death or injury or to harm human health if swallowed, inhaled or contacted by the skin.

Division 6.2 Infectious substances

Division 6.2 includes substances which are infectious to humans and/or animals, genetically modified micro-organisms and organisms, biological products, diagnostic specimens and clinical and medical waste.

Substances known to contain, or reasonably expected to contain, pathogens. Pathogens are micro-organisms (including bacteria, viruses, rickettsia, parasites, fungi) or recombinant micro- organisms (hybrid or mutant) that are known or reasonably expected to cause infectious disease in humans or animals. Infectious substances are not subject to the provisions of these Regulations for Division 6.2 if they are unlikely to cause human or animal disease. Infectious substances are, however, subject to the provisions of these Regulations for Division 6.2 if they are capable of spreading disease.

Class 7: Radioactive material

A radioactive material is any article or substance having a specific activity greater than 70kBq/kg (0.02 u Ci/g)

Radioactive materials are articles or substances which spontaneously and continuously emit ionizing radiation which can be harmful to the health of humans and animals and can affect photographic or X-Ray film. This radiation cannot be detected by any of the human senses (sight, smell, touch or taste), but it can be detected and measured with suitable instruments.

Class 8: Corrosives

Substances which, in the event of leakage, can cause severe damage by chemical action when in contact with living tissue or can materially damage other freight or the means of transport.

Class 9: Miscellaneous dangerous goods

Articles and substances which during air transport present a danger not covered by other classes. Included in this class are: Aviation regulated solids or liquids, magnetized material and miscellaneous articles and substances.

Any material which has narcotic, noxious, irritating or other properties such that, in the event of spillage or leakage on an aircraft, could cause extreme annoyance or discomfort to crew members so as to prevent the correct performance of assigned duties. The materials included under this proper shipping name must not meet any of the definitions for Classes 1 through 8.

Magnetized material: Any material which, when packed for air transport, has a magnetic field strength of 0.159 A/m (0.002 gauss) or more at a distance of 2.1 m (7 ft) from any point on the surface of the assembled package (see also Packing Instruction 902, which includes methods of determining magnetic field strength).

Elevated temperatures substances: Substances that are transported or offered for transport in a liquid state at temperature equal to or exceeding 100°C (212°F) and below their flash point, or in a solid state at temperatures equal to or exceeding 240 °C (464°F).These substances may only be carried under special government exemption.

Miscellaneous articles and substances: Examples included in this class:

- asbestos;

- carbon dioxide , solid (dry ice);

- consumer commodity;

- chemical and first aid kits;

- environmentally hazardous substances;

- life- saving appliances;

- engines, internal combustion;

- vehicles (flammable gas powered), vehicles (flammable liquid powered);

- polymeric beads;

- battery- powered equipment or vehicles;

- zinc dithionite;

- genetically modified organisms or micro-organisms which are not infectious substances but which are capable of altering animals, plants or microbiological substances in a way which is not normally the result of natural reproduction.

For further information, please consult the IATA - Dangerous Goods Regulations Montreal - Geneva