Orgo 2 Safety Review
Review the Safety Data Sheet (SDS) (click the SDS icon below) for hydrogen peroxide, then identify the best course of action for each type of chemical exposure. - In case of skin contact - If inhaled - If swallowed - In case of eye contact
- In case of skin contact = take off any contaminated clothing and rinse thoroughly - If inhaled = Move person to fresh air. - If swallowed = Rinse mouth with water. - In case of eye contact = Rinse with water for 15 minutes.
All lab participants must remain prepared to use safety equipment in case of emergency. Identify the components of effective preparation. (Check all that apply) - Practicing with safety equipment before the start of each lab session - Researching alternatives to the safety equipment available in lab - Knowing what safety equipment is available - Understanding where the safety equipment is located - Being familiar with how safety equipment is used
- Knowing what safety equipment is available - Understanding where the safety equipment is located - Being familiar with how safety equipment is used
Using the letters on the image, identify each component of the liquid waste set-up.
A: Funnel B: Primary container C: Waste label D: Secondary container
Determine when to put on disposable gloves for work in the lab.
Before handling any glassware or chemicals for the experiment
Identify the precautions to take with exits in the lab.
Locate the exits prior to the start of lab. Do not block a door with an EXIT sign.
If an unknown chemical is spilled in lab, what action should you take first?
Notify the lab instructor or TA.
What is the first step for response to an emergency situation?
Remain calm and quiet, gather information, and assess the situation.
What should you do every time before you leave the lab?
Remove your gloves. Wash your hands. Remove your labcoat, if you are wearing one.
Why do you need to support a vacuum filtration apparatus with a clamp?
The filter funnel makes the apparatus top-heavy.
Identify the term that matches each definition.
The horizontal, flat area of a fume hood upon which experiments are carried out = work surface The glass panel in front of the fume hood that shields the user from fumes and other hazards = sash A characteristic that describes substances that evaporate readily, producing large amounts of vapors = volatile The front vent of a fume hood, which helps maintain proper air circulation = airfoil
Read the Safety Data Sheet (SDS) (click the SDS icon below) of hydrogen peroxide to identify the type of eye protection recommended when handling this substance.
Tightly fitting safety goggles
In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station?
15 minutes
Which task must be carried out before using a round-bottom flask at the lab bench?
A proper support, such as a cork ring, should be set in place.
Using the letters on the image, identify the significance of each section on the NFPA diamond. A in blue B in red C in yellow D in white
A: Health B: Flammability C: Reactivity D: Special Hazards
What are the best practices for safely handling waste in the lab?
Always wear appropriate Personal Protective Equipment. Check labels or instructions before any disposal.
Identify the types of information that are necessary to communicate with emergency responders.
Any chemicals involved in an incident How the incident happened Any other hazards present in the lab
When working in a fume hood, what is the best position of the hood sash?
As low as possible, no more than halfway up
When is the best time to clean glassware during the lab session?
As soon as practical after use
What is the best safety approach when working with unknown chemical substances?
Assume that the substance is hazardous. Always wear appropriate PPE and take steps to prevent contact.
If you drop or break glassware in lab, first _____. Then, _____. Finally, place all that material into the _____.
If you drop or break glassware in lab, first get thick gloves or dustpan . Then, carefully collect all the broken glassware. Finally, place all that material into the broken glass container.
What information is needed in order to be prepared for an emergency?
Location of all exits Contact information for emergency personnel Location of lab phone and first aid kit Understanding of where to go should an emergency occur
vacuum filtration
Once the separation is complete in a vacuum filtration, stop the process by first opening the clamp or stopper on the solvent trap and then turning off the vacuum source.
Which steps are necessary for cleaning a spill involving broken glass?
Stop the spread of the spill. Soak up any spilled liquid with absorbent material. Pick up large pieces of glass with gloved hands.
What is the main precaution to take if a Gas Cylinder sign is present in the lab?
Visually check that the gas cylinder is restrained but keep a safe distance from it.
Determine the safest option in the lab if you need your vision to be corrected.
Wear corrective glasses or lenses under your safety goggles for the whole experiment, but always check with your TA or Instructor for your school's policy
Determine when you should remove your goggles in the lab room.
When everyone in the room is done handling any chemicals or glassware
test tube
When heating liquids in a test tube, it is important that the test tube be positioned at an angle, pointed away from people, and half-full.
testing the pH
When testing the pH of a solution with pH or litmus paper, dip a stirring rod in the solution. Add a drop of the solution to the paper. Compare the color of the pH paper to the scale that appears on the container.
working with chemicals that are corrosive
When working with chemicals that are corrosive, it is particularly important to minimize the risk of contact with the body, lab surfaces, or other materials. Proper personal protective equipment includes gloves and safety goggles.
Identify the safety equipment designed to deal with each emergency listed. - fire on a person - chemicals on clothes - cuts or minor burns - large fire on the benchtop - chemicals in eyes
fire on a person = fire blanket chemicals on clothes = safety shower cuts or minor burns = first aid kit large fire on the benchtop = fire extinguisher chemicals in eyes = eyewash station
Changing gloves often will minimize the spread of chemicals. To properly remove gloves, first, __________, and then, ________ . Then insert _____ between the interior edge of the second glove and the skin, and remove the second glove.
grasp the exterior of one glove with a gloved hand peel off the first glove a bare finger
Appropriate personal protective equipment (PPE) is essential in the organic laboratory. Recommended items include a _____ to protect the body, _____ as eye protection, and _____ to cover the hands.
lab coat goggles gloves
Determine the best way to deal with each of the following items that may dangle into the way during lab work.
long hair = Tie back or secure long necklaces = Remove long earrings = Remove loose bracelets = Remove flowy sleeves = Tie back or secure
To clean glassware used with organic chemicals, start by washing it with an _____ in a _____. Then, clean the glassware with _____ in the sink. A final rinse with _____ might also be suggested to help speed up drying.
appropriate organic solvent waste container detergent and water a volatile organic solvent
Identify the types of information that are necessary to communicate with emergency responders. - Any chemicals involved in an incident - How the incident happened - The history of safety incidents in the lab - Any other hazards present in the lab
- Any chemicals involved in an incident - How the incident happened - Any other hazards present in the lab
How should students prepare to use chemicals in the lab?
- Become familiar with the chemicals to be used, including exposure or spill hazards. - Locate the spill kits and understand how they are used.
What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?
- Identification and description of substance - Hazard warnings - Personal protection and first aid recommedations - Handling, storage, and reactivity information
When using organic chemicals, there are additional precautions and recommendations to work safely in lab. Determine the reason for each suggested organic lab practice.
Do not use open flames, like Bunsen burners. = Many organic chemicals are flammable. Rinse the glassware with organic solvents after the experiment. = Many organic chemicals do not dissolve in water. Use glass containers, unless instructed to do otherwise. = Many organic chemicals dissolve plastics. Perform procedures in the fume hood, if possible. = Many organic chemicals involve harmful vapors.
Identify the step that is not recommended when responding to an emergency.
Gather your belongings.
Which types of signs are posted to convey information about chemical storage?
Hazard signs such as "Flammable," "Oxidizer," and "Corrosive" National Fire Protection Association (NFPA) diamond Gas Cylinder sign
What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?
Identification and description of substance Hazard warnings Personal protection and first aid recommedations Handling, storage, and reactivity information
Review the Safety Data Sheet (SDS) (click the SDS icon below) for hydrogen peroxide, then identify the best course of action for each type of chemical exposure.
In case of skin contact = Take off any contaminated clothing and rinse thoroughly If swallowed = Rinse mouth with water. If inhaled = Move person to fresh air. In case of eye contact = Rinse with water for 15 minutes.
What should you do every time you are setting up glassware for a vacuum filtration?
Inspect the tubing for any holes. Ensure that the glassware is designed for use with a vacuum. Check that there are no cracks or defects in the glassware.
All lab participants must remain prepared to use safety equipment in case of emergency. Identify the components of effective preparation.
Knowing what safety equipment is available Understanding where the safety equipment is located Being familiar with how safety equipment is used
Which signs are typically posted in areas of active lab work?
Personal protective equipment (PPE) sign Sign prohibiting food and drink Safety equipment signs Chemical storage signs
It is often helpful to remember the acronym PASS when using a fire extinguisher. Fill in the word that corresponds with each letter to complete the steps needed for operation of this device. P: ____ the pin A: ___ the nozzle at the base of the fire. S: ___ the lever slowly. S: ___ the spray from side to side over the fire.
Pull Aim Sweep Squeeze
Under what conditions should a student inform the instructor of a lab injury?
The instructor must be informed of all laboratory injuries.
In lab, you may need to evaluate the odor or smell of a chemical. What is the best way to smell a chemical sample?
Use your hand to gently waft the smell toward you.
fume hood
When preparing for work in the fume hood, be sure to gather all necessary tools, glassware, and chemicals in advance to minimize the number of times the hood sash is raised and lowered. Work as much as possible in the middle of the work surface to keep the area tidy and promote air flow. If you need to step away from the experiment to obtain another item, lower the sash during this time.
When should you replace your gloves in an organic lab?
When there is any visible tear in the gloves. When the gloves have been exposed to a solvent.
more fume hood
When working in the fume hood, it is important to make an effort to minimize clutter. Only keep items in the hood if they are being used for the current experiment. Do not store chemicals in the fume hood unless instructed to do so.
Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once. 1) While picking up a buret, an unknown solution left by a previous solution drips onto your hand. 2) While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. 3) While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. 4) While checking on a stirring solution, the solution splashes up towards your face.
While picking up a buret, an unknown solution left by a previous solution drips onto your hand. = Gloves While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. = Closed-toe shoes While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. = Lab coat While checking on a stirring solution, the solution splashes up towards your face. = Goggles
When an alarm sounds in the laboratory, it is important to respond _____ and remain _____. Listen for any other instructions, turn off any _____ in use, and be prepared to leave immediately.
calmly, quiet, equipment
In general, which characteristics are necessary for a location to be suitable for chemical storage?
cool dry dark
Identify the section in which each type of information can be found on a Safety Data Sheet.
incompatibility or reactivity with other chemicals = Handling and Storage recommendations in case of accidental contact with the chemical = First Aid Measures chemical name and formula = Identification recommended personal protective equipment (PPE) = Exposure Controls/Personal Protection possible dangers and health effects = Hazards Identification
Move to the safety shower if you spill hazardous chemicals on your _____. Stand under the shower and pull the lever. Remove clothing and continue flushing the area for _____.
skin or clothing 15 minutes
