User:Tekmeme/Hazard Identification Number

 Hazard Identification Number 

Hazard Identification Numbers, also known as Kemler codes or by the abbreviation HIN, are used under European ADR (ref?) and some South American regulations (reference needed) in the transport of dangerous goods. They identify the main hazard or hazards presented by the load in question and appear on the upper half of the rectangular orange panels affixed to the transport unit containing the dangerous goods - the lower half of which orange panel contains the UN number.

A HIN will consist of a two- or three-digit number, preceded in some cases by the letter 'X'. Meaning of hazard identification numbers The hazard identification number consists of two or three figures. In general, the figures indicate the following hazards:

NOTE: The risk of spontaneous violent reaction within the meaning of figure 9 include the possibility following from the nature of a substance of a risk of explosion, disintegration and polymerization reaction following the release of considerable heat or flammable and/or toxic gases.
 * 2 Emission of gas due to pressure or to chemical reaction
 * 3 Flammability of liquids (vapours) and gases or self-heating liquid
 * 4 Flammability of solids or self-heating solid
 * 5 Oxidizing (fire-intensifying) effect
 * 6 Toxicity or risk of infection
 * 7 Radioactivity
 * 8 Corrosivity
 * 9 Risk of spontaneous violent reaction

Doubling of a figure indicates an intensification of that particular hazard. Where the hazard associated with a substance can be adequately indicated by a single figure, this is followed by zero.

The following combinations of figures, however, have a special meaning: 22, 323, 333, 362, 382, 423, 44, 446, 462, 482, 539, 606, 623, 642, 823, 842, 90 and 99, see below.

If a hazard identification number is prefixed by the letter "X", this indicates that the substance will react dangerously with water. For such substances, water may only be used by approval of experts.

The hazard identification numbers have the following meanings:


 * 20 asphyxiant gas or gas with no subsidiary risk
 * 22 refrigerated liquefied gas, asphyxiant
 * 223 refrigerated liquefied gas, flammable
 * 225 refrigerated liquefied gas, oxidizing (fire-intensifying)
 * 23 flammable gas
 * 238 gas, flammable corrosive
 * 239 flammable gas, which can spontaneously lead to violent reaction
 * 25 oxidizing (fire-intensifying) gas
 * 26 toxic gas
 * 263 toxic gas, flammable
 * 265 toxic gas, oxidizing (fire-intensifying)
 * 268 toxic gas, corrosive
 * 28 gas, corrosive
 * 30 flammable liquid (flash-point between 23 °C and 60 °C, inclusive) or
 * flammable liquid or solid in the molten state with a flash-point above 60 °C, heated to a temperature equal to or above its flash-point, or
 * self-heating liquid
 * 323 flammable liquid which reacts with water, emitting flammable gases
 * X323 flammable liquid which reacts dangerously with water, emitting flammable gases1
 * 33 highly flammable liquid (flash-point below 23 °C)
 * 333 pyrophoric liquid
 * X333 pyrophoric liquid which reacts dangerously with water1
 * 336 highly flammable liquid, toxic
 * 338 highly flammable liquid, corrosive
 * X338 highly flammable liquid, corrosive, which reacts dangerously with water1
 * 339 highly flammable liquid which can spontaneously lead to violent reaction
 * 36 flammable liquid (flash-point between 23 °C and 60 °C, inclusive), slightly toxic, or
 * self-heating liquid, toxic
 * 362 flammable liquid, toxic, which reacts with water, emitting flammable gases
 * X362 flammable liquid toxic, which reacts dangerously with water, emitting flammable gases1
 * 368 flammable liquid, toxic, corrosive
 * 38 flammable liquid (flash-point between 23 °C and 60 °C, inclusive), slightly corrosive or
 * self-heating liquid, corrosive
 * 382 flammable liquid, corrosive, which reacts with water, emitting flammable gases
 * X382 flammable liquid, corrosive, which reacts dangerously with water, emitting flammable gases1
 * 39 flammable liquid, which can spontaneously lead to violent reaction
 * 40 flammable solid, or
 * self-reactive substance, or
 * self-heating substance
 * 423 solid which reacts with water, emitting flammable gases, or
 * flammable solid which reacts with water, emitting flammable gases or
 * self-heating solid which reacts with water, emitting flammable gases
 * X423 solid which reacts dangerously with water, emitting flammable gases, or
 * spontaneously flammable (pyrophoric) solid which reacts dangerously with water, emitting flammable gases1
 * 43 spontaneously flammable (pyrophoric) solid
 * X432 flammable solid which reacts dangerously with water, emitting flammable gases, or
 * self-heating solid which reacts dangerously with water, emitting flammable gases1
 * 44 flammable solid, in the molten state at an elevated temperature
 * 446 flammable solid, toxic, in the molten state, at an elevated temperature
 * 46 flammable or self-heating solid, toxic
 * 462 toxic solid which reacts with water, emitting flammable gases
 * X462 solid which reacts dangerously with water, emitting toxic gases1
 * 48 flammable or self-heating solid, corrosive
 * 482 corrosive solid which reacts with water, emitting flammable gases
 * X482 solid which reacts dangerously with water, emitting corrosive gases1
 * 50 oxidizing (fire-intensifying) substance
 * 539 flammable organic peroxide
 * 55 strongly oxidizing (fire-intensifying) substance
 * 556 strongly oxidizing (fire-intensifying) substance, toxic
 * 558 strongly oxidizing (fire-intensifying) substance, corrosive
 * 559 strongly oxidizing (fire-intensifying) substance, which can spontaneously lead to violent reaction
 * 56 oxidizing substance (fire-intensifying), toxic
 * 568 oxidizing substance (fire-intensifying), toxic, corrosive
 * 58 oxidizing substance (fire-intensifying), corrosive
 * 59 oxidizing substance (fire-intensifying) which can spontaneously lead to violent reaction
 * 60 toxic or slightly toxic substance
 * 606 infectious substance
 * 623 toxic liquid, which reacts with water, emitting flammable gases
 * 63 toxic substance, flammable (flash-point between 23 °C and 60 °C, inclusive)
 * 638 toxic substance, flammable (flash-point between 23 °C and 60 °C, inclusive), corrosive
 * 639 toxic substance, flammable (flash-point not above 60 °C) which can spontaneously lead to violent reaction
 * 64 toxic solid, flammable or self-heating
 * 642 toxic solid, which reacts with water, emitting flammable gases
 * 65 toxic substance, oxidizing (fire-intensifying)
 * 66 highly toxic substance
 * 663 highly toxic substance, flammable (flash-point not above 60 °C)
 * 664 highly toxic solid, flammable or self-heating
 * 665 highly toxic substance, oxidizing (fire-intensifying)
 * 668 highly toxic substance, corrosive
 * X668 highly toxic substance, corrosive, which reacts dangerously with water1
 * 669 highly toxic substance which can spontaneously lead to violent reaction
 * 68 toxic substance, corrosive
 * 69 toxic or slightly toxic substance, which can spontaneously lead to violent reaction
 * 70 radioactive material
 * 78 radioactive material, corrosive
 * 80 corrosive or slightly corrosive substance
 * X80 corrosive or slightly corrosive substance, which reacts dangerously with water1
 * 823 corrosive liquid which reacts with water, emitting flammable gases
 * 83 corrosive or slightly corrosive substance, flammable (flash-point between 23 °C and 60 °C, inclusive)
 * X83 corrosive or slightly corrosive substance, flammable, (flash-point between 23 °C and 60 °C, inclusive), which reacts dangerously with water1
 * 839 corrosive or slightly corrosive substance, flammable (flash-point between 23 °C and 60 °C inclusive) which can spontaneously lead to violent reaction
 * X839 corrosive or slightly corrosive substance, flammable (flash-point between 23 °C and 60 °C inclusive), which can spontaneously lead to violent reaction and which reacts dangerously with water1
 * 84 corrosive solid, flammable or self-heating
 * 842 corrosive solid which reacts with water, emitting flammable gases
 * 85 corrosive or slightly corrosive substance, oxidizing (fire-intensifying)
 * 856 corrosive or slightly corrosive substance, oxidizing (fire-intensifying) and toxic
 * 86 corrosive or slightly corrosive substance, toxic
 * 88 highly corrosive substance
 * X88 highly corrosive substance, which reacts dangerously with water1
 * 883 highly corrosive substance, flammable (flash-point between 23 °C and 60 °C inclusive)
 * 884 highly corrosive solid, flammable or self-heating
 * 885 highly corrosive substance, oxidizing (fire-intensifying)
 * 886 highly corrosive substance, toxic
 * X886 highly corrosive substance, toxic, which reacts dangerously with water1
 * 89 corrosive or slightly corrosive substance, which can spontaneously lead to violent reaction
 * 90 environmentally hazardous substance; miscellaneous dangerous substances
 * 99 miscellaneous dangerous substance carried at an elevated temperature

1 Water not to be used except by approval of experts.