Green Chemistry Safety Training PSE/CH 335 Departments of Forest Biomaterials and Chemistry North Carolina State University
Lab Rules: Wear the proper clothing and shoes in the lab. Use the appropriate personal protective equipment (PPE). No food or drink in the lab! Do not throw away food or drink containers in lab trash cans. Do not place broken glass in the trash cans---use the broken glass boxes. Do not pour chemicals down the drain! Wash your hands before leaving the lab. Read your lab assignment in advance. Know what to do in case of emergency. 2
3 Universal Safety Symbols
Common Hazards
5 Chemicals
6 High Voltage
Improperly Secured Gas Cylinder!
Protect yourself! Know what hazards are present in your work area and how to safeguard against them. 8
Review MSDS for chemicals 9 MSDS available at www3.ncmsds.com or supplier.
Personal Protective Equipment (PPE) Select and wear the proper personal protective equipment to protect against the hazards found in the MSDS. 10
11 Safety Glasses
Gloves According to Hazard 12
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19 SAFETY EQUIPMENT
Fire Extinguisher DO NOT USE A FIRE EXTINGUISHER UNLESS YOU HAVE BEEN CERTIFIED BY FIRE SAFETY PERSONNEL. 20
21 First Aid Kits
Eyewash and Safety Shower 22
Use of Eyewash Remove contact lenses if possible. Forcibly hold eyes open in eyewash. Have someone else turn on eyewash and call emergency response. Irrigation should last AT LEAST 15 MINUTES, even if emergency crews arrive more quickly. 23
Safety Showers Used in the event that significant amounts of caustic, toxic, or otherwise hazardous materials are spilled on yourself or others. 1. Get under the shower 2. Pull the handle down 3. If necessary, remove contaminated clothing or shoes 24
SAFETY ALARMS Fire Alarm Fume Hood 25
E-STOP
E-Stops Typically located near the door. Shut off power to electrical wall outlets Useful in fire fighting or electrocution Do not cut power to the lighting Do not cut power to high voltage equipment 27
NO FOOD OR DRINK!!! 28 Including empty wrappers and cups!!! This is an OSHA violation!
CHEMICALS AND SAMPLES
Label With Contents/Hazard Warning Names spelled out no chemical formulae Concentrations needed (molar, percent, etc.) Date of preparation Name of preparer AND course number Hazard warning (flammable, caustic, etc.) OR: Hazardous Materials Identification System (HMIS) Labels
Hazardous Materials Identification System (HMIS) 0 1 REASONABLY SAFE 2 SOME HAZARD USE CAUTION 3 4 HAZARDOUS, BE VERY CAUTIOUS Health (BLUE) 4 Deadly 3 Extreme danger 2 Hazardous 1 Slight Hazard 0 Normal FIRE (RED) Flash Points 4 Below 73 F 3 Below 100 F 2 Below 200 F 1 Above 200 F 0 Will not burn 31 SPECIFIC HAZARDS (WHITE) Oxidizer OX Acid ACID Alkali ALK Corrosive COR Use NO Water W Radiation Hazard Bio Hazard REACTIVITY (YELLOW) 4 May detonate 3 Shock and heat 2 Violent chemical reactions 1 Unstable if heated 0 Stable
Safe Handling of Chemicals Proper labeling of all materials. Minimize exposure to all chemicals No eating, drinking, or applying cosmetics in labs. Avoid mouth pipetting and inhalation. Clean up residue from counters, containers, and equipment daily! Wash your hands when leaving the lab. 32
Incompatible Chemicals Many explosions, fires, and asphyxiations are caused by the accidental combination of potentially dangerous substances. Some common incompatibles include:
Alkali Metals (Ca, K, Na) Water Carbon dioxide Carbon tetrachloride Other chlorinated hydrocarbons
Acetic Acid Chromic acid Nitric acid Ethylene glycol Perchloric acid Peroxides Permanganates
Acetone Sulfuric acid Nitric acid
Hydrogen Peroxide Copper Chromium Iron Flammable Fluids Combustible Materials Nitromethane Aniline
Nitric Acid Acetic Acid Chromic Acid Carbon Hydrogen Sulfide Flammable materials
Example of Incompatible Chemical Storage Weak acid and weak base stored in same cabinet over period of time.
Chemical Spills When in doubt, evacuate the area and notify instructor. Small spills---use Chemsorb to absorb and dispose as hazardous waste. Large spills (especially of fuming acids) evacuate and call 911. 40
41 Fire Prevention Guidelines
Fire Safety Tips Locate nearest fire alarm box Clear exits Store flammable/combustible materials in appropriate containers away from heat and spark sources. Never leave open flame unattended. Regularly check electrical cords/switches. No extension cords long-term. 42
In the Event of a Fire Activate pull station. If there is time, turn off open flames, turn off instrumentation, and stabilize experiments. Pull down fume hood sashes. Close the door. Alert others. Exit the building do not use elevators!! Call 911 from another building or from a cell phone outside. Identify as being at NC State. Assemble at meeting area and account for everyone Do not re-enter the building until cleared by first responders. 43
Surviving a Building Fire Never use an elevator. Check closed doors before opening; if hot, choose another route. Crawl if there is smoke. Take short breaths, freshest air is near the door. If you cannot leave stuff towel, clothing, etc., under door, over vents to restrict smoke and fumes. Open window if possible. Call 911 and give your exact location. Use a towel, sheet, pillowcase, or clothing to hang out the window to mark your location for first responders to see. 44
Lab Rules: Wear the proper clothing and shoes in the lab. Use the appropriate personal protective equipment (PPE). No food or drink in the lab! Do not throw away food or drink containers in lab trash cans. Do not place broken glass in the trash cans---use the broken glass boxes. Do not pour chemicals down the drain! Wash your hands before leaving the lab. Read your lab assignment in advance. Know what to do in case of emergency. 45
QUESTIONS???????