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IMO Class |
Description |
Class 1 |
Explosives |
1.1 |
Substances and articles which
have a mass explosion hazard. |
1.2 |
Substances and articles which
have a projection hazard but not a mass explosion
hazard. |
1.3 |
Substances and articles which
have a fire hazard and either a minor blast
hazard or a minor projection hazard or both,
but not a mass explosion hazard. |
1.4 |
Substances and articles which
present no significant hazard. |
1.5 |
Very insensitive substances
which have a mass explosion hazard. |
1.6 |
Extremely insensitive articles
which do not have a mass explosion hazard. |
Class 2 |
Gases: Compressed, Liquefied
or Dissolved under Pressure |
2.1 |
Flammable gases |
2.2 |
Non-Flammable gases |
2.3 |
Toxic gases |
Class 3 |
Flammable Liquids |
3.1 |
Low flash-point group of liquids
(flash-point below -18?C.) |
3.2 |
Intermediate flash-point group
of liquids (flash-point of -18?C. up to but
not incl. +23?C.) |
3.3 |
High flash-point group of liquids
(flash-point of +23?C. up to and incl. +61?C.)
|
Class 4 |
Flammable Solids or Substances
|
4.1 |
Flammable solids |
4.2 |
Substances liable to spontaneous
combustion |
4.3 |
Substances which, in contact
with water, emit flammable gases. |
Class 5 |
Oxidizing Substances (agents)
and Organic Peroxides |
5.1 |
Oxidizing substances (agents)
by yielding oxygen increase the risk and intensity
of fire |
5.2 |
Organic peroxides - most will
burn rapidly and are sensitive to impact or
friction |
Class 6 |
Toxic and infectious Substances
|
6.1 |
Toxic substances |
6.2 |
Infectious substances |
Class 7 |
Radioactive Substances |
Class 8 |
Corrosives |
Class 9 |
Miscellaneous dangerous substances
and articles * |
MHB |
Materials hazardous only in
bulk ** |
| * |
Marine pollutants which are
not of an otherwise dangerous nature are
listed in class 9 |
| ** |
The regulations for materials
hazardous only in bulk are not applicable
to these materials when they are carried
in closed freight containers, however, many
precautions may have to be observed |
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