| 1 | Explosives | Explosives | Applicable for IMO Codes: IMDG |
| 1.1 | Substances and articles which have a mass explosion hazard | Substances and articles which have a mass explosion hazard | Applicable for IMO Codes: IMDG |
| 1.2 | Subst&art which have project. haz. but not mass explos.haz. | Substances and articles which have a projection hazard but not a mass explosion hazard | Applicable for IMO Codes: IMDG |
| 1.3 | Fire hazard and a minor hazard, but not mass explosion haz. | 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 | Applicable for IMO Codes: IMDG |
| 1.4 | Substances and articles which present no significant hazard | Substances and articles which present no significant hazard | Applicable for IMO Codes: IMDG |
| 1.5 | Very insensitive substances which have a mass explosion haz. | Very insensitive substances which have a mass explosion hazard | Applicable for IMO Codes: IMDG |
| 1.6 | Extrem.insensit.art. which do not have a mass explosion haz. | Extremely insensitive articles which do not have a mass explosion hazard | Applicable for IMO Codes: IMDG |
| 2 | Gases | Gases | Applicable for IMO Codes: IMDG |
| 2.1 | Flammable gases | Flammable gases | Applicable for IMO Codes: IMDG, IGC |
| 2.2 | Non-flammable, non-toxic gases | Non-flammable, non-toxic gases | Applicable for IMO Codes: IMDG, IGC |
| 2.3 | Toxic gases | Toxic gases | Applicable for IMO Codes: IMDG, IGC |
| 3 | Flammable liquids | Flammable liquids | Applicable for IMO Codes: IMDG |
| 4 | Flammable solids | Flammable solids; substances liable to spontaneous combustion; substances which, in contact with water, emit flammable gases | Applicable for IMO Codes: IMDG |
| 4.1 | Flammable solids, self-react.substances&desensitized explos. | Flammable solids, self-reactive substances and desensitized explosives | Applicable for IMO Codes: IMDG, IMSBC |
| 4.2 | Substances liable to spontaneous combustion | Substances liable to spontaneous combustion | Applicable for IMO Codes: IMDG, IMSBC |
| 4.3 | Substances which,in contact with water, emit flammable gases | Substances which, in contact with water, emit flammable gases | Applicable for IMO Codes: IMDG, IMSBC |
| 5 | Oxidizing substances and organic peroxides | Oxidizing substances and organic peroxides | Applicable for IMO Codes: IMDG |
| 5.1 | Oxidizing substances | Oxidizing substances | Applicable for IMO Codes: IMDG, IMSBC |
| 5.2 | Organic peroxides | Organic peroxides | Applicable for IMO Codes: IMDG |
| 6 | Toxic and infectious substances | Toxic and infectious substances | Applicable for IMO Codes: IMDG |
| 6.1 | Toxic substances | Toxic substances | Applicable for IMO Codes: IMDG, IMSBC |
| 6.2 | Infectious substances | Infectious substances | Applicable for IMO Codes: IMDG |
| 7 | Radioactive material | Radioactive material | Applicable for IMO Codes: IMDG, IMSBC |
| 8 | Corrosive substances | Corrosive substances | Applicable for IMO Codes: IMDG, IMSBC |
| 9 | Miscellaneous dangerous substances and articles | Miscellaneous dangerous substances and articles | Applicable for IMO Codes: IMDG, IMSBC |
| A AND B | Cargos which may liquefy and with chemical hazards | | Applicable for IMSBC |
| B | Cargos with chemical hazards | | Applicable for IMSBC |
| HEAVY | Heavy grade oil | Heavy grade oil | Applicable for IMO Codes: MARPOL_ANNEX1 |
| LIGHT | Light grade oil | Light grade oil | Applicable for IMO Codes: MARPOL_ANNEX1 |
| MHB | Material hazardous only in bulk | Material hazardous only in bulk | Applicable for IMO Codes: IMSBC |
| N.A. | Not Applicable | IMO Hazard class does not apply to substances listed in chapter 18 of IBC, but they are subject to certain requirements of Annex II of MARPOL (IMOHazardClass="N.A." and MarpolCode="Z") | Applicable for IMO Codes: IBC |
| P | Product is includ. in code because of its pollution hazards | Product is included in the code because of its pollution hazards | Applicable for IMO Codes: IBC |
| S | Product is includ. in code because of its safety hazards | Product is included in the code because of its safety hazards | Applicable for IMO Codes: IBC |
| S/P | Product is includ. in code because of its safety&poll. haz. | Product is included in the code because of its safety and pollution hazards | Applicable for IMO Codes: IBC |
| UNKNOWN | Code is not known | | Applicable for IMO Codes: IMDG, MARPOL_ANNEX1 |
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