Science Fair Project Encyclopedia
Dangerous goods are substances which pose risk to health, safety, property or the environment during operation and/or transportation. All of these substances are divided in classes in accordance to the specific chemical characteristics resulting in a degree of danger. The classification was not attributed in relation to that specific degree of danger but merely for convenience purposes.
Classification and labelling summary tables
Class 1: Explosives
- 1.1 Explosives with a mass explosion hazard
- 1.2 Explosives with a severe projection hazar
- 1.3 Explosives with a fire, blast or projection hazard but not with mass explosion hazard.
- 1.4 Fire or projection hazard
- 1.5 May explode in fire
- 1.6 No hazard statement
Class 2: Gases
Gases which are compressed, liquefied or dissolved under pressure as detailed below. Some gases have subsidiary risk classes; poisonous or corrosive.
- 2.3 Poisonous Gases
Class 3: Flammable liquids
- 3.1 Highly flammable liquids with a boiling point below 35°C.
- 3.2 Flammable liquids with a Flashpoint of less than 23°C and boiling point above 35°C.
- 3.3 Liquids with a flashpoint above 23°C but not exceeding 61 °C and a boiling point greater than 35°C.
- Ex: kerosene
Class 4: Flammable solids
- 4.1 Flammable solids which are easily ignited and readily combustible.
- 4.3 Substances which emit a flammable gas when wet or react violently with water.
Class 5: Oxidising Agents & Organic Peroxides
- 5.1 Oxidising agents other than organic peroxides.
- 5.2 Organic peroxides, either in liquid or solid form.
- Ex: Benzoyl Peroxides, Cumene Hydroperoxide;
Class 6: Poisonous (Toxic) and Infectious Substances
- 6.1a Poisonous substances which are liable to cause death or serious injury to human health if inhaled, swallowed or by skin absorption.
- 6.1b Toxic substances which are harmful to human health.
- Ex: Low toxicity pesticides;
- 6.2 Biohazardous substances.
- Ex: Vaccines, pathology specimens.
Class 7: Radioactive Substances
- Radioactive substances comprise substances or a combination of substances which emit radiation.
Class 8: Corrosives Substances
Substances which being solids or liquids may harm living tissue or damage equipment.
- 8.1 Acids
- Ex: Hydrochloric Acid;
- 8.2 Alkali substances
- 8.3 Different corrosive and caustic substances
- Caustic Solutions;
Class 9: Miscellaneous Dangerous Substances
Other hazard material's labels
N, environmental hazard
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