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UNIT 1: chemistry whmis

UNIT 1: chemistry whmis. Symbols & Dangers. Matter and science safety. As you pursue more advanced science and chemistry, you will perform experiments and handle materials, equipment and chemicals. It is crucial that you know and follow safety rules and procedures. ALWAYS:

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UNIT 1: chemistry whmis

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  1. UNIT 1: chemistrywhmis Symbols & Dangers

  2. Matter and science safety • As you pursue more advanced science and chemistry, you will perform experiments and handle materials, equipment and chemicals. • It is crucial that you know and follow safety rules and procedures. • ALWAYS: • Read the instructions first before starting anything • Wait for teacher approval to commence • Wear appropriate and protective clothing • Act responsibly • Know your WHMIS symbols

  3. Why Bother? • http://www.youtube.com/watch?v=3jLGkmOVtnI

  4. “It Happened in ontario” • It was his third day on the job, and a new worker was asked to pour a chemical product from a drum. While he was pouring the liquid, the drum exploded and the worker received third degree burns to 90% of his body. He was rushed to the hospital but he died the next day.

  5. “it happened in ontario” • What the worker didn't know: • The chemical contained a hazardous material called toluene • Toluene can explode very easily. In this case, it exploded because of the static electricity charge that was created when he poured the material into the drum. • Why did he not know it was a hazardous material? • The container was not marked or labeled. • He had not received any training. • He did not know his rights and responsibilities.

  6. Explosion at mother Teresa • CTV news 2012: • “… An 18 year old high school student from Mother Teresa Catholic High School succumbed to injuries he suffered from an explosion in his auto-shop class…. [The student] was not breathing and had no pulse when emergency workers arrived at the scene…. The students were working on a BBQ-related project when the explosion occurred…. It’s believed that fumes from the peppermint oil drum ignited and caused a flash explosion.”

  7. WHMIS • Health Canada has published standard rules to ensure individuals’ safety: Workplace Hazardous Materials Information System WHMIS • WHMIS symbols help you determine how to handle or dispose of a material safely • You must memorize them

  8. CLASS A: COMPRESSED GAS • Gas at normal room temp and pressure • Contained under pressure (cylinder) • Dangers: • Uncontrolled release • Suffocation • Frostbite • Examples: • Oxygen • Propane • Helium

  9. CLASS B: FLAMMABLE & COMBUSTIBLE MATERIALS • Solids, liquids, and gases capable of catching fire in the presence of a spark or open flame • Dangers: • Fire or Explosion • Examples: • Diesel fuel • Kerosene • Gasoline

  10. CLASS C: OXIDIZING MATERIALS Chemicals that decompose readily to supply oxygen Increase risk of fire if they come in contact with flammable or combustible materials Dangers: Intensify fires and explosions Examples: Ozone Nitrogen dioxide Peroxides

  11. CLASS D: POISONOUS AND INFECTIOUS MATERIALS • Div 1. Materials Causing Immediate and Serious Toxic Effects • Materials can cause death or immediate injury when a person is exposed to small amounts • Examples: • Carbon monoxide • Cyanide • Hydrogen sulphide

  12. CLASS D: POISONOUS AND INFECTIOUS MATERIALS Div 2. Materials Causing Other Toxic Effects Can cause life-threatening and serious long-term health problems Less severe but immediate reactions in a person repeatedly exposed to small amounts Examples: Asbestos Ammonia Mercury

  13. Div 3. Biohazardous Infectious Material Organisms or toxins produced, that cause disease in people or animals Bacteria, Viruses, Fungi, Parasites Examples: Hepatitis AIDS/HIV Salmonella CLASS D: POISONOUS AND INFECTIOUS MATERIALS

  14. Can cause severe burns to skin and other tissues Effects are permanent Dangers: Corrosion of metals “Burning” human tissue Examples: Hydrochloric acid Sulfuric acid CLASS E: CORROSIVE MATERIALS

  15. Unstable or highly reactive materials than can undergo extremely hazardous, uncontrolled reactions Dangers: Decomposition Polymerization Reaction with water Self-reaction Examples: Ethyl acrylate CLASS F: DANGEROUSLY REACTIVE METALS

  16. Whmis label • Contains: • WHMIS symbols • Risks • Conditions/Restrictions of the product • First Aid Instructions • Company and company contacts

  17. WHMIS LABEL

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