Biotech Lab SafetyMaterial Safety Data Sheets

Hazards in the Lab

Chemical Classes

Bell Work Answer the following question in your lab

notebook:

Why is safety and safety training important for laboratory work?

Objectives Identify specific biological/biohazardous/

chemical materials. (1.7) Students will locate the material safety data

sheets for the facility, and identify appropriate internet MSDS resources.

Students will create a safety map of the facility. Students will apply knowledge of material

safety data sheets (MSDS) (1.3)

Key Terminology Material Safety Data Sheet (MSDS)

A communication from a chemical’s manufacturer that contains vital information regarding safe use and disposal of the chemical and its properties.

BiohazardA substance that poses a danger to life/living things.Safety Equipment GROUP Definition and Sort

Safety EquipmentWith your table group:

Define Safety Equipment on your whiteboard. Be prepared to share your table’s definition.

Based on our class definition: Sort the Deck into “Safety” and “Non-Safety”

groups.

Introduction Science may be hazardous, but can be done

safely when hazards are controlled. Everyone is responsible: students, teachers,

supervisors, and higher administrators. All safety information brought to you today

applies to all science disciplines. Remember - each discipline has SPECIFIC

and unique information and safety protocols.

Hazards in the Lab:Biological Controls

You will encounter biological materials throughout this course.

Wear proper Personal Protective Equipment Universal Precautions: Treat everything like it is

infectious. Disinfect your lab bench each day:

School provided disinfectant spray Freshly prepared solution of 1 part household bleach

and 10 parts water 70% Ethanol(alcohol)

Hazards in the Lab: Biological Hazards

What could be encountered?Bacteria, fungi/mold Injured student/ facultyHuman blood sampling, tissues

(not common in high school labs)

Hazards in the Lab? Where do you start?

Gather Standard Operating Procedures and other information for your facility

Material Safety Data Sheets

Material Safety Data Sheet Here is the MSDS for Sodium chloride

(NaCl) What sections are found on an MSDS? 1. Paste the MSDS into your Lab Notebook 2. Highlight the sections listed on an MSDS

Section 1 = ? Section 2 = ? Etc.

Material Safety Data Sheets (MSDS)

Contain all safety and use information about a chemical.

Manufacturers are required to provide them when chemicals are purchased.

MSDS are an important part of OSHA Hazard Communication Standard (1910.1200)

MSDS must be readily available to employees. Be sure to read all sections before using a chemical.

MSDS Activity Sheet Using the MSDS Activity Sheet: Think about the answers on the worksheet Pair up, and SHARE with your neighbor what

the answers would be….don’t write anything yet!

Where’s the MSDS? Material Safety Data Sheets are required to be

present in ANY facility that uses a chemical. Where are ours?

Record the location in your lab notebook You can even take a picture with your digital camera or phone

if the teacher says yes, and paste that in your lab notebook

Find One! Using the internet, or one of the MSDS

Binders, locate an MSDS for a chemical used in our facility.

Some chemicals used in our facility are:

http://www.flinnsci.com/search_MSDS.asphttp://www.fishersci.com/ Click MSDS Search

Thumbs Up-Thumbs Down

Was the MSDS binder in an easily accessible location?

Hazards in the Lab:Chemical Classes

Acids Bases Solvents

FlammablesHalogenated

Pyrophoric Peroxide Forming Toxic Oxidizers

Chemicals are segregated according to class:

Information about Toxicity, oxidation, etc are identified on the MSDS

Chemical Classes:Acids

Def: The pH range of acids is from 0.1- 6.9. Examples: hydrochloric acid (HCl), acetic

acid, nitric acid, phenol, sulfuric acid Storage Precautions:

Store in large bottles of acids on low shelf or in acid cabinets.

Segregate acids from bases. Have spill kit with neutralizers and

absorbent.

Proper Storage for Acids:

Inside Look at Acid Storage:

Improper Acid Storage

Rust

Chemical Classes:Bases

Def: The pH range of basic solutions is from 7.1 - 14.

Examples: sodium hydroxide (NaOH), ammonium hydroxide,

Storage Precautions: Segregate bases from acids Have a spill kit with neutralizers and

absorbent.

Chemical Classes:Flammables

Def: Has a flash point of 60.5°C (141°F) or lower Examples: acetone, ethanol, methanol, isopropyl alcohol Storage Precautions:

Store in approved safety cans or cabinets Segregate from oxidizing acids and oxidizers Keep away from any source of ignition: flames,

localized heat, or sparks. Store highly volatile flammable liquids in a specially

equipped refrigerator.

Example of Proper Storage:Flammables

Chemical Classes:Pyrophoric

Def: A material which ignites spontaneously upon exposure to air (or oxygen).

Examples: Powders: calcium, zinc, lead, iron, nickel

Storage Precautions: Store sealed in a cool, dry place

Chemical Classes:Peroxide-Forming Chemicals

Def: Organic compounds that spontaneously form peroxides by a free-radical reaction with molecular oxygen in a process of auto-oxidation.

Examples: ethyl ether, isopropyl ether, acetaldehyde Storage Precautions:

Store in airtight containers in dark, cool, dry place. Label containers with receiving, opening, and

disposal dates. Dispose of peroxide-forming chemicals before

expected date of first peroxide formation. Test for presence of peroxides periodically.

Chemical Classes:Toxic

Def: Dangerous or extremely dangerous to health and life when inhaled, swallowed, or absorbed by skin contact.

Examples: phenol, arsenic, chloroform, nitric acid, sulfuric acid, hydrogen peroxide, hydrochloric acid

Storage Precautions: Store according to hazardous nature of chemical,

using appropriate security when necessary.

Turn to your partner – Where would you find the information about how to store the chemical?

Find The Safety Equipment! Take a quick tour of your facility! Locate and record in your lab notebook the location(s) of:

Hazards in the Lab (biohazards or chemical) Safety Equipment Chemical Storage Locations (look for labeled, specialty

cabinets and standard cabinets with chemicals)

Chemical Hazards

Key issue in use, storage, and disposal is:

CHEMICAL COMPATIBILITY!!

Thumbs Up-Thumbs Down

Is chemical compatibility information on an MSDS?

Chemical Compatibility Chart

Closure Why are material safety data sheets required in a

facility?

Take one minute to THINK, then WRITE for one minute about why facilities require MSDS, and why YOU as a technician should read them often.

Homework1. Complete the MSDS Activity Sheet using the MSDS you

found. If an electronic version is used, you DO NOT need to print it, but you do have to record your source website.

2. Identify at least 3 hazards in your facility.

Describe them, and determine ways to prevent or minimize them.

Due tomorrow at the beginning of class.

References Roy, Ken; Safe Science Series http://www.nsela.org/index.php?

option=com_content&view=category&id=71&Itemid=79 June 09, 2011. Lab Safety

http://cfo.asu.edu/ehs-labsafety, June 9, 2011 http://cfo.asu.edu/ehs-labsafety-references, June 9, 2011.

Chemical Safety “Chemical Safety for Teachers and Their Supervisors- Grades 7-12”,

A publication of the American Chemical Society and the ACS Board-Council Committee on Chemical Safety. Send email to oss@acs.org for a copy.

MSDS http://www.flinnsci.com/search_MSDS.asp June 9, 2011 http://www.fishersci.com/ Click MSDS Search June 10, 2011