Your right to know!! WHMIS - Your right to know... WHMIS L 1.
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Transcript of Your right to know!! WHMIS - Your right to know... WHMIS L 1.
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Your right to know!!WHMIS
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Format for today...
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WHMIS…WorkplaceHazardousMaterialsInformationSystem
“An Information System designed to advise you on the Hazardous Materials you may encounter in our Chemistry Lab or in your Workplace”
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Key Elements of WHMIS...
• labels
• Material Safety Data Sheets
• worker training
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Students must…
understand the information provided
follow the rules outlined in the Safety Agreement
wear the equipment, protective clothing
report hazards to their teacher
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Fume
Dust
Smoke
SOLID
LIQUID
GAS
Mist
Vapour
Properties of Hazardous Materials
Compressed
Heavier than air or Replace air
Odourless
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L 7
Routes of Entry...
Inhalation(i.e. Organic vapours causing central nervous system damage)
Ingestion(i.e. lead dust)
Injection(i.e. Blood/ Body Fluids - HIV, HepC)
Absorption(i.e. Formaldehyde-contact dermatitis
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The Body and Health Affects…..
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L 9
Definitions...• Carcinogen: A substance or physical agent
that can cause cancer in humans.
e.g. : Asbestos.
• Mutagen: A substance or physical agent that can cause changes in one or more heredity features by modifying genes.
e.g. : Ionizing radiation.
• Teratogen: A substance capable of causing changes to the developing fetus.
e.g. : Thalidomide.
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Symbols of Chemicals
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L 11
Class A: Compressed Gases
Risks• poses an explosion hazard
because contents of cylinder are under pressure
• container may explode if heated in a fire
• container may explode if dropped
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Class B: Flammable & Combustible Materials
• potential fire hazard
• may ignite spontaneously
• may be a material which will release flammable products if allowed to degrade or when exposed to water
Risks
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Class C: Oxidizing Materials
• can cause skin or eye burns
• increased risk of fire and/or explosion risk in the presence of flammable or combustible material
• can cause other materials to react or break down
Risks
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L 17
Class D - Division 1: ToxicImmediate and Severe
• chemicals which could cause death following an exposure
• may be fatal if ingested or inhaled
• may be absorbed through the skin
Risks
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L 19
Class D - Division 2: ToxicLong Term Effects
• may cause death orpermanent injury
• may cause birth defects or sterility
• may cause cancer
• may be a sensitizer, causing allergies
Risks
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L 21
Class D - Division 3: Biohazardous Infectious
Risks• biological materials which can
cause a disease or have thesame effects as the disease
• materials which couldcontain organisms which are infectious
• materials which could contain biological toxins or allergenic sensitizers
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L 23
Class E: Corrosive Materials
• eye and skin irritation on exposure
• severe burns/tissue damage possible
• lung damage if inhaled
• may cause blindness if eyes contacted
• environmental damage from fumes
Risks
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Class F: Dangerously Reactive Materials
• chemically unstable
• may react with violence in unexpected manner
• may explode from heat or shock
• may react with water
• may violently polymerize
Risks
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Consumer Products
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Consumer Products
FLAMMABLE
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Consumer Products
FLAMMABLE POISON
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Consumer Products
CORROSIVEFLAMMABLE POISON
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Consumer Products
CORROSIVE EXPLOSIVEFLAMMABLE POISON
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Consumer Product Labels
Flammable Toxic
Corrosive Pressurized Container
**Quick Skin-bonding Adhesives – no symbol required. Text only.
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L 32
Supplier Labels...
7 Required pieces of Information:
1. Name of Product2. Name of Supplier3. Reference to MSDS4. WHMIS Symbols5. Risk Phrases6. Precautionary Measures7. First Aid Measures
- English and French- Hatch Marked Border
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MSDS….
Material Safety Data Sheets
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MSDS’s: Who is Responsible?• provide MSDS in both official languages
• ensure MSDSs are completeSupplier:
Mrs. Lacroix: • obtain MSDS
• ensure MSDSs are available to students for lab preparation
Students: • obtain MSDS from computer
• Review and understand hazards, precautions, and emergency response for all required lab chemicals.
• Write hazards, precautions, and emergency responses in lab notebook prior to Lab Day.
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MSDSs...
1) Product Identification & Use2) Hazardous Ingredients3) Physical Data4) Fire & Explosion Hazard Data5) Reactivity Data6) Toxicological Properties/Health Hazard Data7) Preventative Measures8) First Aid Measures9) Preparation Date of MSDS
Information Required on the MSDS:
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• What dangers might this chemical impose?
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Do your homework!!
Look up the hazards on the MSDS.
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Controlling Hazards by taking
Precautions….
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What Do I Do If ......? A chemical contacts my skin?
A chemical contacts my eyes?
I break glassware?
I spill water?
I spill acid?
Hot liquid overflows while on my hotplate?
My test tube contents fizz and bubble over the top?
I notice a frayed electrical cord?
My lab partner(s) is not following lab rules?
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Sample MSDS...
Barium Nitrate
Find: 1. Hazards2. Precautions3. Emergency Responses