Safety In the Laboratory

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Safety In the Laboratory

• Chemistry 11

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General Safety Rules

• Always read and understand the directions before
  beginning an activity.
• Give the teacher your complete attention when
  instructions are given.
• Set up and use equipment as described in the lab
  procedure or by your teacher.
• Notify teacher if you have any medical conditions
  that may be affected by lab work.
• Learn the location and proper use of ALL safety
  equipment.
• Do not begin any activity until you are
  instructed to do so.
• Do not work in the lab without proper
  supervision.
• Clear the lab bench of all materials (except what
  is needed).
• Wear protective equipment and clothing
  (especially safety glasses) whenever working with
  chemicals or heat.
• Tie long hair back.
• Wear appropriate clothing for labs (ex. flat,
  close-toed shoes)

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General Safety Rules

• Avoid wearing contact lenses in the lab.
• Never eat or drink in the lab area.
• Make sure you understand all the safety labels
  and label all your containers.
• If any part of your body comes in contact with a
  chemical, immediately rinse it with water for at
  least 10-15 min and have your lab partner inform
  the teacher.
• Never put a chemical up to your nose to smell it
  use the wafting procedure.
• Experiments involving poisonous vapours must be
  conducted in a fume hood.
• Keep all combustible materials away from open
  flames.
• Dispose of chemical wastes only as instructed by
  the teacher.
• Report all injuries or spills to the teacher.
• Clean up all equipment and chemicals before
  leaving the lab.
• Wash your hands thoroughly with soap and water
  after each experiment

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Handling Chemicals

• Read and double-check labels on chemicals bottles
  before using any chemical.
• Take only as much as you need.
• To avoid contamination, do not return any unused
  chemicals to the stock bottles.
• When transferring chemicals, hold the containers
  away from your body.
• Avoid touching chemicals with your hands. If
  chemicals do come in contact with your hands,
  wash them immediately.
• Wear latex gloves when handling concentrated
  acids and bases.
• When mixing an acid with water, always add the
  acid to the water.

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Handling Glassware

• Carry glass tubing, burrets, pipettes, etc.,
  carry them in a vertical position to minimize
  chances of breakage and to avoid stabbing anyone.
• Place hot glassware on an insulating pad rather
  than directly on the table.
• Allow plenty of time for hot glass to cool before
  touching it so you dont burn yourself. Remember
  Hot glass looks the same as cool glass!
• Never use your bare hands to clean up broken
  glass - use a broom and dustpan. Dispose of the
  broken glass in the proper broken glass container
  NOT the garbage can.
• Never use cracked glassware or broken equipment

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Heating Substances

• Keep hair and clothing away from open flames.
• Always turn off burners and hot plates when not
  in use.
• Never heat anything unless told to do so.
• Do not leave anything unattended that is being
  heated or is visibly reacting.
• When heating a substance in a test tube, make
  sure that the mouth of the tube is not pointed at
  you or anyone else.
• Never heat a closed container.

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What to do if there is an Injury

• Remain calm.
• Notify teacher immediately.
• Know how to use the emergency equipment and where
  it is located

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What to do if there is a Fire

• Turn off the gas
• Notify the teacher immediately and listen to
  their instructions,
• If your clothing is on fire STOP, DROP, and ROLL
  and someone should get the fire blanket to wrap
  around you.
• Use sand or blanket to smother small fires.
• Pull fire alarm only if told to do so.

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How to use a Fire Extinguisher

• Know the location! (by the main door)
• Pull the pin
• Aim the hose at the BASE of the flames
• Squeeze the handle and empty the ENTIRE contents
  onto the fire

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Hazardous Household Product Symbols

• Safety symbols used on things you will find at
  home
• Ex. Cleaning products

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4 Type of Hazards

• Poison
• Flammable
• Corrosive
• Explosive

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3 Intensity Levels

• Danger
• Warning
• Caution

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WHMIS

• Workplace Hazardous Materials Information
  System
• Commercially used safety system to identify
  hazardous materials
• 8 different categories

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Class A Compressed Gas

• Gas under high pressure and should not be heated
  or dropped

Class B Flammable and
Combustible Material

• Will burn/catch fire easily
• Dont leave near flames / ignition source

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Class C Oxidizing Material

• Reacts to produce oxygen, (or other oxidizing
  agents) so it fuels other fires
• Highly reactive

Class D Poisonous and Infectious Materials

• Has 3 different divisions

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Division 1 Causing Immediate and
Serious and Toxic Effects

• Toxic or very toxic chemicals

Division 2 Causing Other Toxic Effects

• Other toxins that generally take longer to act
• Ex. a carcinogen, respiratory tract sensitizer,
  irritant

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Division 3 Biohazardous Infectious Material

• Organism or toxin produced by an organism that
  can cause disease in humans or animals
• Ex. Bacteria, viruses

Class E Corrosive Material

• Will corrode materials including flesh
• Keep off skin, and out of eyes!

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Class F Dangerously Reactive

• Chemicals that react violently/vigorously
• Can react due to movement, temperature or
  pressure changes
• May react with water or create toxic gas

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MSDS

• Material Safety Data Sheet
• Gives VERY specific safety information about a
  chemical
• Should have one for every chemical in the lab
• Stored in the teacher prep area

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Hazardous Materials Identification System
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QUIZ NEXT CLASS!
Danger

• STUDY, it will include
• Safety Rules
• Safety Symbols
• Anything from the safety video!