Lab Safety
What is the lowest number on the NFPA diamond
0
What are the best practices for safely handling waste in the lab?
1. Always wear appropriate Personal Protective Equipment. 2. Check labels or instructions before any disposal.
Identify the types of information that are necessary to communicate with emergency responders.
1. Any chemicals involved in an incident 2. Any other hazards present in the lab 3. How the incident happened
Identify the precautions to take with exits in the lab.
1. Do not block a door with an EXIT sign. 2. Locate the exits prior to the start of lab.
Steps to clean up glass
1. If you drop or break glassware in lab, first get thick gloves or dustpan 2. Then, carefully collect the glass 3. Finally, place all that material into the broken glass container
Steps for a liquid clean up spill
1. Surround the area with absorbent material then cover the spill. 2. Scoop up the material and place in a plastic bag 3. Place the bagged waste in a solid waste container 4. Wipe down the area with detergent and water
What is the highest number on the NFPA diamond
4
What information does not need to be included a chemical waste label?
A description of the experiment the chemicals were used for
Gas Cylinders could ____ if disturbed or knocked over
explode
What emergency equipment is used for Chemicals in eyes
eyewash station
What emergency equipment is used for fire on person
fire blanket
What emergency equipment is used for large fire on the benchtop
fire extinguisher
What emergency equipment is used for cuts and scrapes
first aid kit
What does red mean on the NFPA sign
flammability
What does blue mean on the NFPA sign
Health Hazard
What chemicals can be cleaned up with a general spill kit
phosphoric acid, methanol, acetone
What emergency equipment is used for chemicals on clothes
safety shower
where should you dispose syringe tips
sharps container
where should you dispose an unused solid reagent
solid waste container
what does white mean on the NFPA
special hazard
Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?
your lab partner
What chemicals can be cleaned up with a special spill kit
Mercury and hydrofluoric acid
Should you ever touch a gas cylinder in the lab?
No, alert a TA if one needs to be moved
What does PASS mean (fire extinguisher)
P- pull the pin A- aim S- squeeze S- sweep
When disposing waste you should wear___
PPE
before leaving the lab you should
Remove your gloves, Wash your hands, and Remove your lab coat
What can you look at to find information on how to handle a specific chemical?
Safety Data Sheets
What kinds of lab waste is there?
Solid, aqueous, organic, biohazard, glass
Under what conditions should a student inform the instructor of a lab injury?
The instructor must be informed of all laboratory injuries.
where should you dispose titrant solution
Nalgene bottle with cap
What is generally the best approach when liquid from a large reagent bottle is needed in an experiment?
Pour some of the reagent from the bottle into a beaker, then use as needed in the procedure.
What does yellow mean on the NFPA sign
reactivity hazard
What information is needed in order to be prepared for an emergency?
1. Contact information for emergency personnel 2. Location of lab phone and first aid kit 3. Location of all exits 4. Understanding of where to go should an emergency occur
What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance?
1. Identification and description of substance 2. Hazard warnings 3. Personal protection and first aid recommendations 4. Handling, storage, and reactivity information
Which types of signs are posted to convey information about chemical storage?
1. National Fire Protection Association (NFPA) diamond 2. Gas Cylinder sign 3. Hazard signs such as "Flammable," "Oxidizer," and "Corrosive"
What is the best way to smell a chemical sample?
Use your hand to gently waft the smell toward you.
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.
when should you remove your goggles in the lab room?
When everyone in the room is done handling any chemicals or glassware
When should you start a new chemical waste container in the lab?
When the contents of the current container are a couple inches below the brim of the container
What is the last step of any spill cleanup procedure?
Wipe down the affected area with detergent and water.
where should you dispose broken flask
box lined with puncture resistant bag
Should different kinds of waste ever be mixed?
no
if an emergency occurs, should you grab your belongings?
no
What is an example of a special hazard
oxidizers, acid, radiation
Determine when to put on disposable gloves for work in the lab.
Before handling any glassware or chemicals for the experiment
