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