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:

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

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.

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.

External links

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