6/20/2022

Department Food Science and Nutrition

Chemistry for Life Science FSN 106

Lab #1

Lab Safety
Instructor:
Dr.Maryam Al-Asousi
Anwar Al-Harbi
Munirah Albeajan

Contents
1- Importance of Safety

2- General Safety Rules

3- Safety Equipment, First Aid

4- Reading Chemical Labels:

MSDA (NFPA/HMIS)
Safety Symbols
Storage Code

5- Some laboratory accidents photos

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Importance of
the lab safety
• Protect of self
• Protect others
• Protect lab equipment
and facilities

Lab Safety Begins Before You Go to

the Lab!
1. lab coats must be worn at all times while in the laboratory.
This rule must be followed whether you are actually working
on an experiment or simply writing in your lab notebook.
2. Contact lenses are not allowed. various fumes may
accumulate under the lens and cause serious injuries or
blindness.
3. Closed toe shoes and long pants must be worn in the lab.
Sandals and shorts are not allowed.
4. Long hair must be tied back when using open flames

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Dressing for Lab

Most important clothing that need on the lab

Lab Coat Goggles

Gloves

Safe Lab Practices

Eating, drinking are strictly
prohibited in the lab

No unauthorized experiments
are to be performed.

Never taste anything.

Never directly smell the source of any vapor
or gas.

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Safe Lab Practices 2

Never pipette chemicals by mouth.

Always wash your hands before

leaving the lab

Learn where the safety and first-aid

equipment is located.

Lab Safety

MSDS PPE Emergency

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PPE

Safety Equipment

Safety Shower Eye Fountain Fire Extinguisher

Fire Blanket First Aid

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In case of an emergency…
• Know the locations of:
• fire extinguisher
• fire blanket
• body shower
• eyewash
station
• first aid kit

Safety station with

• If you spill a harmful chemical eye/face wash
on yourself or in your eyes,
start rinsing immediately,
wash it 15 min. and send your
partner to get teacher’s help

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Fire types & Extinguishers

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Hot Objects

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Protect Yourself
Hand Safety
• If a chemical spills on your skin, notify the
teacher and rinse with water for 15 minutes
• Wash hands after every lab
• Handle
glassware,
sharp tools
and heated
containers
carefully

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Sharp Objects
• Notify teacher if you get cut.
• Broken glass and sharp objects do not go
in trash cans.
• Teacher will clean up broken glass.

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Chemical Safety
• Read all labels twice before removing
a chemical from the container.
• Only use the type and
amount of chemical
instructed to use.
• Never touch, taste, or
smell a chemical unless
instructed by the teacher.
• Never mix chemicals
unless instructed to do so.

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Chemical Safety
• Transfer chemicals carefully!
• Keep lids on chemical containers when not in
use
• When diluting an acid, pour the
acid into water.
• Consider all chemicals dangerous.

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READING
CHEMICAL
LABEL

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Safe Lab Practices 3

Consider all chemicals to be hazardous unless you are instructed otherwise.
Material Safety Data Sheets (MSDS) are available in lab for all chemicals in use.
These will inform you of any hazards and precautions of which you should be
aware.

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Chemicals Labeling
• The two major systems of chemical hazard labeling are NFPA (National Fire
Protection Agency) and HMIG (Hazardous Material Information Guide).
• Each uses the same color and number codes, but each lays the label out in a
different manner,
NFPA uses four diamonds
HMIG uses vertically stacked bars

Rated on a 0-4 basis.

If, for example, ether
is present, a very
high rating of 4 would
be indicated.

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National Fire Protection Association (NFPA)

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Hazardous Materials Identification System (HMIS)

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Safety Symbols

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Example

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SECTION 1: Identification of the substance/mixture and of

the company/undertaking
SECTION 2: Hazards identification
SECTION 3: Composition/information on ingredients
SECTION 4: First aid measures
SECTION 5: Firefighting measures
SECTION 6: Accidental release measure
SECTION 7: Handling and storage
SECTION 8: Exposure controls/personal protection
SECTION 9: Physical and chemical properties
SECTION 10: Stability and reactivity
SECTION 11: Toxicological information
SECTION 12: Ecological information
SECTION 13: Disposal considerations
SECTION 14: Transport information
SECTION 15: Regulatory information
SECTION 16: Other information

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MSDS

https://youtu.be/KAl-IFmJYAM

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Chemicals Storing Codes

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Flammable: Store in area segregated for flammable reagents.

Health hazard: Toxic if inhaled, ingested or absorbed through skin. Store in secure area.

Reactive and oxidizing reagents: May react violently with air, water or other substances.
Store away from flammable and combustible materials.

Corrosive: May harm skin, eyes, mucous membrane. Store away from red-, yellow- and blue-
coded reagents.

Presents no more than moderate hazard in any of the categories above. For general chemical
storage (green or orange are used)

Stripes: Incompatible with other reagents of the same color code. Store separately.

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Lab Accidents

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What is Wrong With This Pictures?

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Remember to…
• Stay at your workstation.
• Maintain a clean work area.
• Read and follow all directions.
• Report any spills, accidents, or injury to the
teacher immediately.
• Clean and put away all equipment at the end
of the lab period.
• Dispose of waste products according to
instruction.

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