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Laboratory and Chemical Safety

Part Two. Laboratory and Chemical Safety . First Aid – Accidents. WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin

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Laboratory and Chemical Safety

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  1. Part Two Laboratory and Chemical Safety

  2. First Aid – Accidents • WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin • Cuts and other injuries. First aid can be applied by the instructor or the student can be referred to the campus health center. • If necessary, you will be taken to the school nurse, the doctor, or the emergency room. Please keep your insurance information with you at lab.

  3. Chemical Safety • Labeling – required to communicate chemical hazard to the person using it. • SDS – provides information about the chemical

  4. What is on the SDS • 0- Date of preparation • 1- Identification (Formula and molecular weight) • 2- Hazard identification • 3- Composition / information on ingredients • 4- First aid measures • 5- Fire-fighting measures • 6- Accidental release measures • 7- Handling and Storage • 8-Exposure control / personal protection

  5. 9- Physical and Chemical Properties • 10- Stability and Reactivity • 11- Toxocological information • 12- Ecological information • 13- Disposal considerations • 14- Transport information • 15- Regulatory information • 16- Other information

  6. Where can you find an SDS • SDSs must be available in the lab in some form in case a student is injured. If the injury involves a chemical, we must have the SDS for the rescue squad.

  7. SDSs in the lab Yellow folder in wire cage – one page On a shelf in one of the two lab rooms - complete

  8. Other locations -In the CSO’s office MCK 307, Dr Crockett -On line (S:\Academic\CHEM\Chemical Inventory)

  9. GHS statements – 1 highest hazard, 5 lowest listed

  10. GHS pictograms (nine) • Acute toxicity (fatal or severe) • Skin corrosion / burns • Eye damage • Corrosive to metals

  11. GHS • Flammables • Pyrophorics • Self heating • Emits flammable gas • Self reactives • Organic peroxides

  12. GHS • Explosives • Self-reactives • Organic peroxides • Aquatic toxicity

  13. GHS • Irritant – skin and eye • Skin sensitizer • Acute toxicity (harmful) • Narcotic effects • Respiratory tract irritant • Hazardous to ozone layer

  14. GHS • Gases under pressure • Oxidizers

  15. GHS • Carcinogen • Mutagenicity • Reproductive toxicity • Respiratory Sensitizer • Target organ toxicity • Aspiration toxicity

  16. Blue – Health Hazard Red – Flammability Yellow – Reactivity White – Special symbol Chemical Labeling - NFPA

  17. NFPA Colors • Blue – 4 – short exposure can cause death – ie. HCN. • Blue – 2 – chronic exposure could cause possible injury – ie. ammonia gas. • Red – 4 – readily vaporize and burn – propane gas. • Red – 2 – must be heated before combustion can occur – fuel oil.

  18. NFPA • Yellow 4 – capable of detonation at normal temperatures – TNT • Yellow 2 – violent chemical changes at elevated T / P or react violently with water – Ca metal • White – • ₩ – water reactive – Mg metal. • OX – oxidizer – ammonium nitrate • ACID - acid • ALK - base • COR – corrosive • - radioactive

  19. Dept. of Transportation • Explosives – five subcategories • Gases

  20. DOT • Flammable liquids • Flammable solids

  21. DOT • Oxidizers • Poisons

  22. DOT • Radioactive • Corrosives Other Hazards

  23. Our labeling – Blue • Blue – Health hazard, • toxic • NFPA 2 • oral LD50 < 1 g / kg • DOT class 6 (Poisons) • TSCA listed • GHS Acute toxic – oral, dermal, or inhalation • GHS Warning – narcotic effects • GHS Aquatic toxicity

  24. Reds • Dark Red – Flammable. • NFPA 2 • Flash point between 100o and 40 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 4 or oxidizer • Light red • NFPA 3 • Flash point between 40o and 10 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 2 or 3 or oxidizer • Combination of the two • NFPA 4 • Flash point below 10 oC • DOT 3 or 4 (Flammable liquids or Flammable solids) • GHS flammable category 1 or oxidizer

  25. Yellow – Corrosive or an oxidizer. NFPA 2 DOT 5 or 8. GHS corrosive, warning, or oxidizer Green – carcinogenic, teratogenic, or mutagenic. IARC 2 or listed on MSDS. GHS Health hazard Black – an explosive or one that can form an explosive species. DOT 1 (explosives) Listed as a peroxide former GHS – explosives White – “no hazard for now” GHS – no symbols

  26. Color dots Blue – toxic, red - flammable Blue – toxic, red on red – extremely flammable

  27. Color dots Blue – toxic, yellow – corrosive Blue – toxic, large green - carcinogenic

  28. Example • 26 – 697 – BY Shelf 26 - inorganic oxidizers MSDS number 697 B – blue – toxic Y – yellow corrosive Compound is 30% hydrogen peroxide

  29. Example • 10 – 642 – BR(3)YGX Shelf 10 – nitro organics MSDS number 642 B – toxic, R(3) – very flammable, Y – corrosive, X – explosive, G – carcinogenic 2-nitropropane (no longer on inventory)

  30. Chemical incompatibility • Alphabetical storage is not used completely • Sodium cyanide with sulfuric acid?? • Acids with bases? • Storage – functional groups. Organics from inorganics. Acids from alcohols. • We combine the two methods. • Separate the chemicals by functional group. • Alphabetize within the group.

  31. Waste from the labs • Labeled bottles will be in the hoods. • Be sure to place chemicals in the proper containers. Read the label! • Do not overfill a waste bottle (2/3 to 3/4). • If full, ask the stockroom manager for a new bottle. Do not use a beaker as a waste “bottle” in the hood.

  32. Labeling for Waste Bottles • Laboratory_______________________________ • Experiment ______________________________ • Waste Contents __________________________ • __________________________ • __________________________ • __________________________ • __________________________ • __________________________

  33. Fire safety • Where are the fire exits when an alarm sounds? Look next to the lab or classroom door. Always check the route in a new building / classroom. • What is the procedure for exiting the building? Read the directions the first time you are in the room. • What is the procedure for after you exit the building? Go outside away from the building and get together with your class. Do not return to the dorm or classroom until the professor tells you to do so. You will be instructed by the building supervisor, police, or fire personnel. • Never assume that it is a drill. Always leave the building

  34. Reporting incidents • How do we report an accident? • Use the reporting form available. Where are the forms – in the lab, in the stockroom, or in my office. • Reportable accidents - • Hazardous chemical spills • Bodily injury • Falls • Simple first-aid • Other as determined by CSO

  35. Accident report form • Name______________________________ Date_____________ • Where exposure occurred: • _________________________________________________________________________________________________________________________________________ • Description of exposure/incident • _______________________________________________________________________________________________________________________________________________________________________________________________________________ • Type/name of chemical involved • _____________________________________________________________________ • *please send copy of the MSDS sheet for product with this form. • Lab Superviser’s signature____________________________

  36. First Aid – Accidents • WATER – the first line for chemical contact or burns. Do not neutralize the chemical. The reaction will release heat and cause further damage to the skin • Cuts and other injuries. Minor first aid can be applied by the instructor or the student can be referred to the campus health center. • If necessary, you will be taken to the school nurse, the doctor, or the emergency room. Please keep your insurance information with you at lab.

  37. Broken glass - do not place into the trash cans. If glass is found in the trash, and unless we know differently, we will hold all students in the previous lab responsible. Trash – trash can – not in the sinks or in the broken glass box Chemical spills and waste – labeled bottles will be placed in the hood. Be careful to place the waste in the correct bottle if more than one bottle is present. Never fill the waste bottle over 2/3 to 3/4 full. Housekeeping duties – during lab

  38. Housekeeping after lab • Clean all glassware that you used • Wipe down the benchtop (wet paper towel) • Return your tray to the cabinet (organic lab) • Return used glassware to the lab supply (general chem) • Refill burets with deionized water • Check the sinks for paper, glass, or plastic • Put the chairs in the center opening of the table. • Leave the area as clean or cleaner as you found it.

  39. Chemical Hygiene Plan • What is the CHP? This is a document that tells us how to handle hazardous chemicals on the BC campus. • Covers. Transportation, handling, labeling etc on the BC campus. • Any questions should come to Dr Crockett • This will be available on line by later this term.

  40. References • Safety in Academic Chemistry Laboratories, ACS • Handbook of Chemical Health and Safety, ACS • Prudent Practices in the Laboratory, NRC • Hazardous Chemicals and the Right to Know, Harris/Harvey • Improving Safety in the Chemical Laboratory, Young • Safe Storage of Laboratory Chemicals, Pipitone • Environmental Compliance Assistance Guide for Colleges and Universities, APPA/CSHEMA • Waste Disposal in Academic Institutions, Kaufman • CFR • Laboratory Safety for Chemistry Students, Robert Hill and David Finster

  41. Quiz! • You will be given a quiz covering the basic safety rules and regulations that we have covered here. When finished, you will sign and turn in the quiz. This marks your attendance in the second half of this seminar. • If both the quiz and the dress code are not turned in, you will NOT receive credit for the seminar and you will no longer be allowed to work in our labs.

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