A Hazard Identification Number (HIN) can be a quick indication of a particular hazard if the code is understood.
Elements of the HIN |
Meaning |
2 |
emission of gas |
3 |
liquid, flammable or self-heating |
4 |
solid, flammable or self-heating |
5 |
oxidizing |
6 |
toxicity or risk of infection |
7 |
radioactivity |
8 |
corrosive |
9 |
spontaneously violent reaction |
duplicate use of number |
greater hazard |
0 |
added if single digit adequate |
X |
reacts dangerously with water |
Number |
Hazard |
20 |
asphyxiant gas or gas with no subsidiary risk |
22 |
refrigerated liquid gas, asphyxiant |
223 |
refrigerated liquid gas, flammable |
225 |
refrigerated liquid gas, oxidizing |
23 |
flammable gas |
238 |
flammable gas, corrosive |
239 |
flammable gas, spontaneous violent reaction |
25 |
oxidizing |
26 |
toxic gas |
263 |
toxic gas, flammable |
265 |
toxic gas, oxidizing |
268 |
toxic gas, corrosive |
28 |
gas, corrosive |
30 |
flammable gas; self-heating liquid; flammable liquid or solid in the molten state with flash point above 60°C, heated to a temperature at or above flashpoint |
323 |
flammable liquid, reacts with water, emitting flammable gases |
X323 |
flammable liquid, reacts dangerously with water, emitting flammable gases |
33 |
highly flammable liquid |
333 |
pyrophoric liquid |
X333 |
pyrophoric liquid, reacts dangerously with water |
336 |
highly flammable liquid, toxic |
338 |
highly flammable liquid, corrosive |
X338 |
highly flammable liquid, corrosive, reacts dangerously with water |
339 |
highly flammable liquid, spontaneous violent reaction |
36 |
flammable liquid, slightly toxic, self-heating liquid, toxic |
362 |
flammable liquid, toxic, reacts with water emitting flammable gas |
X362 |
flammable liquid, toxic, reacts dangerously with water, emitting flammable gases |
368 |
flammable liquid, toxic, corrosive |
38 |
flammable liquid or self-hearting liquid, slightly corrosive |
382 |
flammable liquid, corrosive, reacts with water emitting flammable gas |
X382 |
flammable liquid, corrosive, reacts dangerously with water, emitting flammable gases |
39 |
flammable liquid, spontaneous violent reaction |
40 |
flammable solid, or self-reactive substance, or self-heating substance |
423 |
solid reacts with water emitting flammable gases, or flammable solid emitting reactive flammable gases or self-heating solid reacts with water emitting flammable gases |
X423 |
solid reacts dangerously with water emitting flammable gases, or flammable solid reacts dangerously with water emitting reactive flammable gases |
43 |
pyrophoric solid |
X432 |
pyrophoric solid, reacts dangerously with water emitting flammable gases |
44 |
flammable solid, in molten state at an elevated temperature |
446 |
flammable solid, toxic, in molten state at an elevated temperature |
46 |
flammable or self-heating solid, toxic |
462 |
toxic solid, reacts with water emitting flammable gases |
X462 |
solid, reacts dangerously with water emitting toxic gases |
48 |
flammable or self-heating solid, corrosive |
482 |
corrosive solid, reacts with water emitting flammable gases |
X482 |
solid, reacts dangerously with water emitting corrosive gas |
50 |
oxidizing substance |
539 |
flammable organic peroxide |
55 |
strongely oxidizing substance |
556 |
strongly oxidizing substance, toxic |
558 |
strongly oxidizing substance. corrosive |
559 |
strongly oxidizing substance, spontaneous violent reaction |
56 |
oxidizing substance, toxic |
568 |
oxidizing substance, toxic, corrosive |
58 |
oxidizing substance, corrosive |
59 |
oxidizing substance, spontaneous violent reaction |
60 |
toxic or slightly toxic substance |
606 |
infectious substance |
623 |
toxic liquid, reacts with water emitting flammable gas |
63 |
toxic substance, flammable |
638 |
toxic substance, flammable, corrosive |
639 |
toxic substance, flammable, spontaneous violent reaction |
64 |
toxic solid, flammable or self-heating |
642 |
toxic solid, reacts with water emitting flammable gas |
65 |
toxic substance, oxidizing |
66 |
highly toxic substance |
663 |
highly toxic substance. flammable or highly flammable |
664 |
highly toxic solid, flammable or self-heating |
665 |
highly toxic substance, oxidizing |
668 |
highly toxic substance, corrosive |
X668 |
highly toxic substance, corrosive, reacts dangerously with water |
669 |
highly toxic substance, spontaneously lead to violent reaction |
68 |
toxic substance, corrosive |
69 |
toxic or slightly toxic substance, spontaneously lead to violent reaction |
70 |
radioactive material |
78 |
radioactive material, corrosive |
80 |
corrosive or slightly corrosive substance |
X80 |
corrosive or slightly corrosive substance, reacts dangerously with water |
823 |
corrosive liquid, reacts with water emitting flammable gases |
83 |
corrosive or slightly corrosive substance, flammable |
X83 |
corrosive or slightly corrosive, flammable, reacts dangerously with water |
839 |
corrosive or slightly corrosive, flammable, spontaneous violent reactions |
X839 |
corrosive or slightly corrosive, flammable, spontaneous violent reactions, reacts dangerously with water |
84 |
corrosive solid, flammable or self-hearting |
842 |
corrosive solid that reacts with water, emitting flammable gases |
85 |
corrosive or slightly corrosive, oxidizing |
856 |
corrosive or slightly corrosive, oxidizing and toxic |
86 |
corrosive or slightly corrosive, toxic |
88 |
highly corrosive substance |
X88 |
highly corrosive substance, reacts dangerously with water |
883 |
highly corrosive substance, flammable |
884 |
highly corrosive substance, flammable or self-heating |
885 |
highly corrosive substance, oxidizing |
886 |
highly corrosive substance, toxic |
X886 |
highly corrosive substance, toxic, reacts dangerously with water |
89 |
corrosive or slightly corrosive substance, spontaneous violent reactions |
90 |
environmentally hazardous substance, miscellaneous |
99 |
miscellaneous dangerous substance carriet at an elevated temperature |
where:
• highly flammable: flash point < 23°C
• flammable: flash point 23 to 60°C
• oxidizing is fire-intensifying
• pyrophoric: spontaneously flammable
Specialty: Toxicology, Emergency Medicine, Critical Care