Chemical Hazard Code Table

Hazard Code

Hazard Classification

1

Forbidden in transportation

1.1

Explosive, Mass explosion (main hazard)

1.2

Explosive, Projectiles (main hazard)

1.3

Explosive, Minor blast (main hazard)

1.4

Explosive, No significant hazard (main hazard)

1.5

Blasting agent (main hazard)

1.6

Explosive, Extremely insensitive (main hazard)

2.1

Flammable gas (main hazard)

2.2

Non-Flammable, Non-Toxic Gas (main hazard)

2.3

Toxic Gas (main hazard)

3

Flammable liquid (main hazard)

4.1

Flammable solid (main hazard)

4.2

Spontaneously Combustible (main hazard)

4.3

Dangerous when wet material (main hazard)

5.1

Oxidizer (main hazard)

5.2

Organic peroxide (main hazard)

6.1

Toxic solid or Liquid (main hazard)

6.2

Infectious agent (main hazard)

7

Radioactive (main hazard)

8

Corrosive (main hazard)

9

Other miscellaneous hazard

10

Non-Hazardous

11

Compressed gas

12

Severely toxic

13

Moderately toxic

14

Slightly toxic

15

Flammable

16

Combustible

17

Pyrophoric

18

Oxidizer

19

Organic peroxide

20

Water Reactive

21

Corrosive

22

Acid

23

Base

24

Biohazard

25

Carcinogen

27

Suspect carcinogen/mutagen

28

Radioactive

29

Cryogenic material

30

Unstable with age

31

Halogenated solvent

32

Skin irritant

33

Lachrymator

35

Stench

36

Sensitizer

37

Hepatotoxin

38

Nephrotoxin

39

Neurotoxin

40

Blood and Hemapoietic toxin

41

Lung irritant

42

Eye irritant

43

Mucous membrane damage

44

Water Reactive corrosive

45

Skin-absorbable poison

46

Detonation hazard in fire

51

Requires refrigeration

52

Freeze

53

Store under nitrogen

54

Store under argon

55

Store in the dark

65

California Prop. 65 Carcinogen

66

California Prop. 65 Reproductive toxin

67

US CDC Biosafety Level 1 Biohazard

68

US CDC Biosafety Level 2 Biohazard

69

US CDC Biosafety Level 3 Biohazard

70

US CDC Biosafety Level 4 Biohazard

 

Appendix