3. SAFETY IN THE GENERAL CHEMISTRY LABORATORY

4. Successful work in the chemistry laboratory involves not only mastery of chemical concepts and techniques, but also knowing: Slide 1a-Introduction what the safety requirements are, what equipment is available, and when and how to use each piece of equipment. Safety regulations are established for each laboratory by Federal, State, and University mandates.

5. Personal Safety Requirements

6. Slide 2a-Personal Safety Requirements It is mandatory that NO FOOD or DRINK items be taken into the laboratory. In addition to not eating, drinking or smoking in the laboratory,each person working in a chemistry laboratory needs to observe In addition to not eating, drinking or smoking in the laboratory, each person working in a chemistry laboratory needs to observe ALL RELEVANT SAFETY REGULATIONS ALL RELEVANT SAFETY REGULATIONS.

7. Eye Protection Z87 Type Goggles O

8. Slide 3a-Eye Protection safety goggles are required for ALL persons in the laboratory Whenever anyone is working with chemicals or apparatus in the laboratory, safety goggles are required for ALL persons in the laboratory. In the University of Michigan chemistry laboratories, these must be goggles, not glasses. must have a “Z87” imprinted on themThey must have a “Z87” imprinted on them to indicate they meet flammability and chemical resistance requirements. cannot have any type of open perforationsThey cannot have any type of open perforations. contact lenses are not allowed in the laboratory, even while wearing gogglesIn addition, contact lenses are not allowed in the laboratory, even while wearing goggles.

9. Slide 3a-Proper Clothing Wearing correct attire is essential to help avoid laboratory accidents. Floppy sleeves should be avoided. Shoes that cover the entire foot are required. Shorts are not acceptable in the laboratory. Long hair should be tied back. Lab coats are required. All backpacks, book bags, and coats should be placed on the coat rack and shelves provided or stored in a drawer-NOT ON THE BENCHES.

10. Gloves Whenever handling corrosive or toxic materials, protective gloves should be worn.

11. Slide 4a-Gloves Whenever handling corrosive or toxic materials, protective gloves should be worn. Gloves made of vinyl, latex, and nitrile are available. Be sure to wear the proper type of glove for the specific chemical hazards encountered in each experimental situation. Gloves should never be worn outside the lab.

12. Always wash your hands thoroughly to remove any potential chemical residues before you leave the lab. Washing Hands

13. Lab Safety Equipment In case of an emergency, you should know the location and proper use of all the safety equipment provided in the laboratory. Always immediately inform the instructor of any accident.

14. Fire Extinguishers (1) Aim nozzle at base of fire. (2) Pull out locking key. (3) Squeeze handles.

15. Slide 7a-Fire Extinguishers Carbon dioxide fire extinguishers are suitable for many of the potential fire hazards in the general chemistry laboratories. aim the nozzle at the base of the firepull out the locking keydepress the handles together To operate this type of fire extinguisher, aim the nozzle at the base of the fire, pull out the locking key and depress the handles together. This will release a discharge of carbon dioxide that will smother the fire. Always inform the instructor of the use of a fire extinguisher so that it can be recharged.

16. Safety Eyewash Any chemical contacting one’s eyes should be immediately and thoroughly rinsed out using the safety eyewash found in every laboratory.

17. Push handle to start the flow of water! Position head between spigots.

18. Slide 9a-Safety Eyewash Position the head with eyes open between the spigots.Position the head with eyes open between the spigots. Push the handle to start the flow of water.Push the handle to start the flow of water. Flushing for 15 minutes is standard (minimum) procedure.Flushing for 15 minutes is standard (minimum) procedure.

19. Safety Shower Any chemical spill on a person should be washed off immediately and thoroughly using the safety shower. Pull the chain to start the flow of water!

20. Slide 10a-Safety Shower Remove all contaminated clothing and stand under the shower.Remove all contaminated clothing and stand under the shower. Pull the chain to start the flow of water.Pull the chain to start the flow of water. Washing should continue long enough to insure complete removal of the chemical, at least 15-20 minutes.Washing should continue long enough to insure complete removal of the chemical, at least 15-20 minutes. Any chemical spill on a person should be washed off immediately and thoroughly using the safety shower.

21. Fire Blanket In case of a clothing fire, a fire blanket should be used. Remove the fire blanket from its container using the straps. Wrap it around the person to completely cover the person and smother the fire.

22. Emergency Gas/Electrical Shut Off Locate the controls in your laboratory. Be sure to understand how they operate.

23. Slide 12a-Emergency Gas/Electrical Shut Off In most laboratories a single valve and circuit breaker assembly will allow for the complete shut off of gas to all outlets and power to most outlets. Locate the controls in your laboratory and be sure that you understand how they operate.

24. Sand Ansul and Bicarbonate Sand Ansul and Bicarbonate ACID METAL

25. Slide 14a-Bicarbonate, Sand, Ansul Containers Located on lab benches are containers of sodium bicarbonate to neutralize acid spills, plus sand and Ansul containers for small fires. These work by covering either the spill of acid or the fire with a solid. Each needs to be cleaned up and disposed of in a specific manner. Be sure that the instructor is notified if any of these materials have been used.

26. Safety Card

27. Slide 15a-Safety Card In each laboratory emergency instructions are enumerated on a regulation safety placard. Find and read the one in your laboratory. The 112 number can be dialed from any campus phone. Or, call directly the Campus Safety Department, to provide you with emergency assistance or instructions at any time. There is a phone located in or near each lab. Locate the one in your laboratory.

28. Special Caution-Handling Glassware Lubricate glass surfaces. Protect hands. NEVER force the glassware!

29. Slide 16a-Special Caution Handling Glassware Many laboratory accidents involve cuts or puncture wounds due to improper manipulation of glassware. Never force a piece of glassware when constructing experimental apparatus! Use proper hand protection and lubricants such as glycerin or soapy water when possible.

30. Waste Disposal Discard waste as needed, during and at the end of each laboratory period.

31. Waste Disposal Specific guidelines need to be observed for waste disposal. Waste Basket

32. Paper Products Paper products that do not contain chemicals can be placed in the waste baskets. Waste Basket

33. Broken Glassware Crock Broken glass or single-use glassware should be placed in the broken glassware crocks after any disposable contents have been removed.

34. Solid and liquid chemicals need to be placed in appropriate containers. The exact means will be given in the lab procedure or specified by the instructor. Solid and Liquid Chemicals Never rinse chemicals down the drain!

35. Material Safety Data Sheets MSDS information for chemicals can also be accessed from the UM Web site at http://www.umich.edu/~oseh/msdslink.html

36. Learning to work safely in the laboratory is as important as learning the chemical concepts and techniques involved in each experiment.

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