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Your right to know!!WHMIS
Format for today...
WHMIS…WorkplaceHazardousMaterialsInformationSystem
“An Information System designed to advise you on the Hazardous Materials you may encounter in our Chemistry Lab or in your Workplace”
Key Elements of WHMIS...
• labels
• Material Safety Data Sheets
• worker training
Students must…
understand the information provided
follow the rules outlined in the Safety Agreement
wear the equipment, protective clothing
report hazards to their teacher
Fume
Dust
Smoke
SOLID
LIQUID
GAS
Mist
Vapour
Properties of Hazardous Materials
Compressed
Heavier than air or Replace air
Odourless
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
The Body and Health Affects…..
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.
Symbols of Chemicals
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
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
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
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
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
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
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
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
Consumer Products
Consumer Products
FLAMMABLE
Consumer Products
FLAMMABLE POISON
Consumer Products
CORROSIVEFLAMMABLE POISON
Consumer Products
CORROSIVE EXPLOSIVEFLAMMABLE POISON
Consumer Product Labels
Flammable Toxic
Corrosive Pressurized Container
**Quick Skin-bonding Adhesives – no symbol required. Text only.
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
MSDS….
Material Safety Data Sheets
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.
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:
• What dangers might this chemical impose?
Do your homework!!
Look up the hazards on the MSDS.
Controlling Hazards by taking
Precautions….
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?
Sample MSDS...
Barium Nitrate
Find: 1. Hazards2. Precautions3. Emergency Responses
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