Chemical Waste Management Procedures

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Questions and Answers

Fill in the words to complete each step in liquid spill cleanup: Surround the area with _____________.

absorbent material

Fill in the words to complete each step in liquid spill cleanup: Scoop up the material and place in a _______________.

plastic bag

Fill in the words to complete each step in liquid spill cleanup: Place the bagged waste in a ____________________.

solid waste container

Fill in the words to complete each step in liquid spill cleanup: Wipe down the area with ___________________.

detergent and water Signup and view all the answers

How should students prepare to use chemicals in the lab?

Locate the spill kits and understand how they are used. Become familiar with the chemicals to be used, including exposure or spill hazards. Signup and view all the answers

Determine where to dispose of each type of waste: Unused solid reagent:

solid waste container Signup and view all the answers

Determine where to dispose of each type of waste: Broken flask:

box lined with puncture resistant bag Signup and view all the answers

Determine where to dispose of each type of waste: Syringe tips:

sharps container Signup and view all the answers

Determine where to dispose of each type of waste: Titrant solution:

Nalgene bottle with cap Signup and view all the answers

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

A description of the experiment the chemicals were used for Signup and view all the answers

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 Signup and view all the answers

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. Signup and view all the answers

What should a student do with any excess chemical remaining from a sample after the experiment is complete?

Check and see if anyone else can use the chemical. If not, discard in the proper waste container. Signup and view all the answers

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. Signup and view all the answers

What is the first step for response to an emergency situation?

Remain calm and quiet, gather information, and assess the situation. Signup and view all the answers

Identify the types of information that are necessary to communicate with emergency responders.

How the incident happened, any other hazards present in the lab, any chemicals involved in an incident. Signup and view all the answers

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. Signup and view all the answers

Which signs are typically posted in areas of active lab work? (Select all that apply)

Sign prohibiting food and drink Signup and view all the answers

What information is necessary to review in order to be considered familiar with the Safety Data Sheet (SDS) of a substance? (Select all that apply)

Identification and description of substance Signup and view all the answers

Read the Safety Data Sheet of hydrogen peroxide to identify the recommended way to store this substance.

In a tightly closed container in a dry and well-ventilated place Signup and view all the answers

Identify the components of effective preparation for using safety equipment in case of emergency. (Select all that apply)

Understanding where the safety equipment is located Signup and view all the answers

Identify the safety equipment designed to deal with each emergency listed.

Large fire on the bench top = Fire extinguisher Fire on a person = Fire blanket Chemicals on clothes = Safety shower Cuts or minor burns = First aid kit Chemicals in eyes = Eye wash station Signup and view all the answers

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

15 minutes Signup and view all the answers

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 Signup and view all the answers

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 Loose bracelets = Remove Flowy sleeves = Tie back or secure Long earrings = Remove Signup and view all the answers

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. = Goggles 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 picking up a buret, an unknown solution left by a previous solution drips onto your hand. = Gloves While transferring a solution from a flask to a beaker, the solution accidentally spills down the front of the lab bench. = Lab Coat Signup and view all the answers

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

Goggles, gloves, and lab coat Signup and view all the answers

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

Before handling any glassware or chemicals for the experiment Signup and view all the answers

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 Signup and view all the answers

Determine when you should remove your goggles in the lab room.

When everyone in the room is done handling any chemicals or glassware Signup and view all the answers

Study Notes

Liquid Spill Cleanup

Surround the area with absorbent material and cover the spill.
Scoop the material into a plastic bag for safe disposal.
Place the bagged waste into a solid waste container.
Wipe down the area using detergent and water.

Preparation for Using Chemicals

Locate and understand the use of spill kits.
Familiarize with chemicals, including potential exposure or spill hazards.

Waste Disposal Guidelines

Unused solid reagents go into a solid waste container.
Broken flasks should be placed in a box lined with a puncture-resistant bag.
Syringe tips require disposal in a sharps container.
Titrant solutions should be discarded in a Nalgene bottle with a cap.

Chemical Waste Labels

Labels do not need to include descriptions of the experiment related to the chemicals used.

Liquid Waste Setup Components

Components include a funnel, primary container, waste label, and secondary container.

Best Practices for Waste Handling

Always wear appropriate Personal Protective Equipment (PPE).
Check labels or instructions before any disposal actions.

Handling Excess Chemicals

Verify with others if the excess chemical can be reused.
Properly discard in the designated waste container if not.

Handling Liquid Reagents

Pour from a large reagent bottle into a beaker for use rather than directly from the bottle.

Emergency Response

Stay calm, gather information, and assess the emergency situation.

Emergency Information for Responders

Communicate how the incident occurred and identify any existing hazards and involved chemicals.

Precautions with Gas Cylinders

Ensure that gas cylinders are restrained and maintain a safe distance from them.

Signage in Lab Work Areas

Signs typically include prohibition of food/drink, chemical storage info, safety equipment, and PPE.

Familiarity with Safety Data Sheets (SDS)

Review identification, protection details, handling, storage, and hazard warnings in the SDS.

Storage for Hydrogen Peroxide

Store in a tightly closed container, away from direct sunlight in a dry, well-ventilated area.

Preparedness for Safety Equipment

Know the location, availability, and operation of safety equipment in the lab.

Safety Equipment for Specific Emergencies

Fire extinguisher for large bench fires.
Fire blanket for flames on a person.
Safety shower for chemicals on clothing.
First aid kit for cuts or minor burns.
Eye wash station for chemicals in eyes.

Eye Flushing Duration

Eyes should be rinsed for at least 15 minutes at the eyewash station after chemical contact.

Proper Glove Removal Technique

Grasp the exterior of one glove to remove it, then use a bare finger to peel off the second glove.

Managing Long Accessories in the Lab

Tie back long hair and sleeves, remove necklaces, bracelets, and earrings before starting work.

PPE for Various Lab Incidents

Goggles protect against splashes.
Closed-toe shoes protect feet from dropped items.
Gloves are needed for contact with chemicals.
Lab coats protect clothing and skin from spills.

Common PPE Usage

Goggles, gloves, and lab coats are essential in a general chemistry lab.

Timing for Disposable Gloves

Put on gloves before handling glassware or chemicals for experiments.

Corrective Vision Options in Lab

Wear corrective eyewear under safety goggles, following specific school policies.

When to Remove Goggles

Remove goggles only after all chemicals and glassware have been handled and the lab is safe.

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Description

This quiz covers essential procedures for managing chemical waste, including spill cleanup, proper labeling, and disposal guidelines. Understand the importance of familiarization with spill kits and best practices for handling hazardous materials safely.