OChem Lab Safety

When should lab participants look at the Safety Data Sheet (SDS) of a substance?

Before using the substance

What should you do after finishing work with a reagent bottle?

Close the bottle. Return the bottle to its proper storage location.

Read each statement regarding food and beverages in the lab and determine if each is true or false. Beverages are allowed in lab as long as they are in containers with lids. Tobacco products of all kinds are prohibited in lab. Food items should not be brought into the lab. Chewing gum is okay in the lab as long as you don't blow bubbles.

False True True False

What do the 4 components of the NFPA diamond represent? Blue (left) Red (up) Yellow (right) White (down)

Health Hazard Fire Hazard Reactivity Specific Hazard

Why should Bunsen burners not be used when heating organic materials?

Many organic materials are flammable and could cause a fire.

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.

Identify the equipment best suited for extinguishing each type of fire. clothing fire small benchtop fire large fire on floor

fire blanket overturned beaker fire extinguisher

Identify the step that is not recommended when responding to an emergency.

gather your belongings

Determine which items of personal protective equipment (PPE) you will likely use in a general chemistry lab.

gloves, goggles, lab coat

Determine the best way to deal with each of the following items that may dangle into the way during lab work. long hair long earrings flowy sleeves long necklaces loose bracelets

tie back or secure remove tie back or secure remove remove

In case of accidental contact with chemicals, how long should the eyes be flushed at the eyewash station?

15 minutes

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 interior of one glove with a gloved hand; peel off the first glove; a bare finger

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 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

Fill in the words to complete each step in liquid spill cleanup. 1. Surround the area with ______, then cover up the spill. 2. Scoop up the material and place in a ______ 3. Place the bagged waste in a ______ 4. Wipe down the area with ______

absorbent material plastic bag solid waste container detergent and water

How should spill cleaning materials be discarded?

Seal in a labeled plastic bag, then place in the solid waste container.

When everyone in the room is done handling any chemicals or glassware

When everyone in the room is done handling any chemicals or glassware

Determine when to put on disposable gloves for work in the lab.

Before handling any glassware or chemicals for the experiment

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

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

What information does not need to be included a chemical waste label?

A description of the experiment the chemicals were used for

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.

Most laboratory chemical spills are cleaned up in a similar manner, but acid and base spills require an extra step. What is this extra step?

Neutralize the spill before cleaning it up.

Review the Safety Data Sheet (SDS) for hydrogen peroxide, then identify the best course of action for each type of chemical exposure. In case of eye contact If inhaled If swallowed In case of skin contact

Rinse with water for 15 minutes. Move person to fresh air. Rinse mouth with water. Take off any contaminated clothing and rinse thoroughly

If you drop or break glassware in lab, first _______ Then, ______ Finally, place all that material into the ______

get thick gloves or dustpan carefully collect all the broken glassware broken glass container

Match each lab incident to the item of PPE that will protect you from it. Each item of PPE will only be used once. While checking on a stirring solution, the solution splashes up towards your face. While pulling an empty beaker off the shelf at the beginning of lab, it slips out of your hand onto the floor. While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. While picking up a buret, an unknown solution left by a previous solution drips onto your hand.

goggles closed-toe shoes lab coat gloves

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. _________ the pin _________ the nozzle at the base of the fire _________ the lever slowly _________ the spray from side to side over the fire

pull; aim; squeeze; sweep

Determine where to dispose of each type of waste. unused solid reagent syringe tips titrant solution broken flask

solid waste container sharps container nalgene bottle with cap box lined with puncture resistant bag

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

Which is NOT a good source of information about the hazards that affect waste disposal in a chemistry lab?

Your lab partner

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.

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