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HSNO Classifications Hazard Pictogram Notes / Descriptions

2.1.1A

UN Class 2.1

Flammable Gas
  1. Flammable Gas: High Hazard
  2. Flammable Aerosols
2.1.1B Flammable Gas

Flammable Gases

UN Class 2.2 Non-Flammable Non Toxic Gas

Non Hazardous Gases Under Pressure:

  1. Compressed Gas
  2. High Pressure Liquefied Gas
  3. Low Pressure Liquefied Gas
  4. Dissolved Gas
  5. Refrigerated Liquefied Gas
UN Class 2.3 Non-Flammable Non Toxic Gas

Toxic Gas

Refer HSNO Class 6.1A, B & C: Acute Toxic; where the substance is a gas

3.1A, B & C

UN Class 3

Non-Flammable Non Toxic Gas

3.1A Flammable Liquid: Very High Hazard

31.B Flammable Liquid: High Hazard

31.C Flammable Liquid: Medium Hazard

3.1D Flammable Gas

Flammable Liquid: Low Hazard

3.2A, B & C

UN Class 3

Non-Flammable Non Toxic Gas

Liquid Desensitised Explosive: High Hazard

4.1.1A & B

UN Class 4.1

Non-Flammable Non Toxic Gas

4.1.1 A Readily Combustible Solids & Solids that may cause Fire through Friction: Medium Hazard

4.1.1B Readily Combustible Solids & Solids that may cause Fire through Friction: Low Hazard

4.1.2A, B, C, D, E & F

UN Class 4.1

Non-Flammable Non Toxic Gas

Self-reactive Substance

4.1.2G Flammable Solid

Self-reactive Substance

4.1.3A, B & C

UN Class 4.1

Non-Flammable Non Toxic Gas

Solid Desensitised Explosive

4.2A B & C

UN Class 4.2

Non-Flammable Non Toxic Gas

4.2A Spontaneously Combustible Pyrophoric Substances: High Hazard

4.2B Spontaneously Combustible Self-heating Substance: Medium Hazard

4.2C Spontaneously Combustible Self-heating Substance: Low Hazard

4.3A, B & C

UN Class 4.3

Non-Flammable Non Toxic Gas

Substance which in contact with water emits flammable gas

5.1.1A, B & C Oxidising Liquid & Solid

5.1.2A Oxidising Gas

UN Class 5.1

Oxidising Agent

5.1.1A Oxidising Substances that are Liquids or Solids: High Hazard

5.1.1B Oxidising Substances that are Liquids or Solids: Medium Hazard

5.1.1C Oxidising Substances that are Liquids or Solids: Low Hazard

5.1.2A Oxidising Substances that are Gases

5.2A, B, C, D, E & F

UN Class 5.2

Organic Peroxide

Organic Peroxide

5.2G Organic Peroxide

Organic Peroxide

6.1A, B & C

UN Class 6.1

Acute Toxic

Acute Toxic

6.1A Very Toxic

6.1B & C Toxic

UN Class 2.3

Acute Toxic

Acute Toxic: where the substance is a gas

6.1D & E Acute Toxic

Acute Toxic

UN Class 6.2

Not Part of HSNO

Infectious Substance

Infectious Substance

6.3A & B Skin Irritant

6.4A Eye Irritant

6.5B Sensitisers (Dermal)

Irritants

6.3A Skin Irritant

6.4A Eye Irritant

6.5B Contact Sensitisers

6.5A

6.6 A & B

6.7 A & B

6.8 A, B & C

6.9 A & B

Toxic

6.5A Sensitisers (Respiratory)

6.6A Substances that are known or presumed human mutagens

6.6B Substances that are suspected human mutagens

6.7A Substances that are known or presumed human carcinogens

6.7B Substances that are suspected human carcinogens

6.8A & B Substances that are known or presumed human reproductive or developmental toxicants

6.8C Substances that produce toxic human reproductive or developmental effects on or via lactation

6.9A & B Substances that are toxic to human target organs or systems

7 – Not part of HSNO Radioactive

Radioactive Material Category I

7 – Not part of HSNO Radioactive

Radioactive Material Category II

7 – Not part of HSNO Radioactive

Radioactive Material Category III

7 – Not part of HSNO Radioactive

Radioactive Material Fissile

8.1A

8.2A, B & C

UN Class 8

Corrosive

8.1A Corrosive to Metals

8.2A Extremely Corrosive to Skin

8.2B Highly Corrosive to Skin

8.2C Corrosive to Skin

8.3A Corrosive

Corrosive to eyes

9.1A, B, C & D

9.2A, B, C, D

9.3A, B & C

9.4A, B & C

Toxic

9.1A Substances that are very toxic in the aquatic environment

9.1B Substances that are ecotoxic in the aquatic environment

9.1C Substances that are harmful in the aquatic environment

9.1D Substances that are slightly harmful to the aquatic environment or are otherwise designed for biocidal action

9.2A Very toxic in the soil environment

9.2B Ecotoxic in the soil environment

9.2C Harmful in the soil environment

9.3A Substances that are very ecotoxic to the terrestrial vertebrates

9.3B Substances that are ecotoxic to terrestrial vertebrates

9.3C Substances that are harmful to terrestrial vertebrates

9.4A Substances that are very ecotoxic to terrestrial invertebrates

9.4B Substances that are ecotoxic to terrestrial invertebrates

9.4C Substances that are harmful to terrestrial invertebrates