safety first! what are some do’s and don’t in a lab?
TRANSCRIPT
SAFETY FIRST!
What are some Do’s and Don’t in a Lab?
SAFETY EQUIPMENT IN THE CLASSROOM
Goggles - for eye protection
Eyewash station - for flushing of the eyes
Fire blanket - for smothering clothing fires
Safety shower - for clothing fires as well as extensive chemical spills on body.
Fire extinguisher - for fires NOT on a person
CHEMICAL HOOD
CHEMICAL SAFETY SHOWER
Used to flush copious amounts of chemicals off your body.
May have an eye wash station attached to it.
WHEN TO WEAR YOUR SAFETY GOGGLES
Always wear safety goggle’s when you use: chemicals heating materials glassware
Handling Accidents and Spills
React quickly and calmly to accidents. Report accidents to your teacher. Review MSDS sheets if needed Clean up spills with proper supplies. Clean up a solid spill or glassware with a
broom and dustpan and dispose of it where indicated by your teacher.
APPROPRIATE CLOTHING
Loose fitting clothing or jewelry can get damaged by equipment, chemicals, or heating devices.
ELECTRICAL HAZARDS The main concern when using electricity in laboratory situations is electrical shock.The human body is a good conductor of electricity.
MECHANICAL HAZARDS
The main concern is that loose clothing or hair will be caught in the machinery and will cause bodily damage.
Objects that come into contact with a spinning component can cause sparks or can damage the equipment.
HAIR INSTRUCTIONS Tie back long hair when using chemicals,
heat, or equipment with gears or spinning parts.
Caution, hair preparations such as hairspray, gels, and mousse are often very flammable.
THE RIGHT TO KNOW LAW
DELAWARE’S HAZARDOUS CHEMICAL INFORMATION
ACT
Is better known as
You have the right to know what chemicals you are working with in a working environment.
THE RIGHT TO KNOW LAW
MSDS
Identifies manufacturer Gives chemical and physical properties Indicates fire and explosion hazard Identifies health hazard Gives reactivity data Indicates storage and handling procedures Supplies first aid information Details disposal and cleanup methods
MSDS sheets online
MSDS stands for = Material Safety Data sheet
Material Safety Data Sheets
MSDS forms can be found here at Delcastle High School:
• Main Office• Nurse’s Office• Wellness Center• Maintenance/Custodians• Science classrooms• Shops
TYPES OF CHEMICAL EXPOSURE
What does Exposure mean? Two types of chemical exposure:
Acute
Chronic
ACUTE EXPOSURE• Exposure to large amount of
chemicals in a short period of time.
ACUTE REACTIONS• A reaction that happens right away or within minutes or hours. (Burns, rashes, nausea)
CHRONIC EXPOSURE Exposure to small amounts of a
chemical over long periods of time
CHRONIC REACTIONS• A reaction that occurs or builds up over a long period of time (smokers hack)
CHRONIC HEALTH EFFECTS
Cancer Respiratory problems Birth defects Mutations
WHY DO WE NEED TO KNOW ABOUT CHEMICAL HAZARDS ? To protect yourself To protect others To protect our environment
Each year millions of Americans are exposed to chemicals. It is up to each of us to protect ourselves our environment and each other.
Signal Words Caution Warning Danger
These words are often followed by such words as:
•Combustible•Flammable •Explosive•Oxidizer•Reactive
•Corrosive•Poison•Irritant•Carcinogen•Toxic
COMMON WAYS CHEMICALS ENTER OUR BODIES
• Ingestion (digestion)
• Skin / Eye Contact
• Inhalation (inhale)
Types of hazards that can affect humans
Health hazards Fire hazards Reactivity hazards
Chemical Warning LABELS
Name of the chemical Chemical formula Hazard warning Manufacturer Hazard statement Handling and storage Notes to physician
Signal words Precautions Antidotes Fire, spill and leak
instructions
RTK Worksheet
Chemical Warning LabelsChemical warning labels may have
the following information listed:
Identity of the chemical
Chemical Warning LabelsChemical warning labels may have
the following information listed:
Hazard Statement Signal word First Aid
Hazards for skin Hazards for
swallowing Call poison control
Chemical Warning Labels
Chemical warning labels may have the following information listed:
Instructions in case of exposure
Antidotes
Notes to physician
Handling and storage instructions
Manufacture
How dangerous can Toothpaste be?
COLOR CODING ON CONTAINERS
RED - FLAMMABLE
YELLOW - REACTIVE
BLUE - TOXIC OR POISONOUS
WHITE - CORROSIVE (to eat through) orCAUSTIC (to burn)
GREEN - NONHAZARDOUS
NUMBER SYSTEM4 - extremely dangerous
3 - very dangerous
2 - moderately dangerous
1 - irritating
0 - not known to be toxic
D.O.T. classifications
Tolerance Limit Value (TLV)
The amount of chemicals that a human being can be exposed to without side effects.
Warning Signs
Warning Signs
Vocabulary to Know
Oxidation –
Toxic –
Diluted –
Reactivity –
Exposed to oxygen
Will react (change) when something is added to it.
Deadly
To weaken with water.
Vocabulary to Know
Carcinogen-
Combustible- Concentrated-
Corrosive-Cutaneous -
Causes cancer
Will catch on fire
To strengthen without water.
Will eat through
Affecting the skin
Vocabulary to Know EPA – DOT – Ignitable – Ingestion – Inhalation –
Lethal Dose – Mutagen –
Environmental Protection AgencyDepartment Of Transportation
Will catch on fire
To eat
To breath
Dose of something that will kill you.
Causes mutations
Extra Credit Find the name of a chemical in your house. Type in FlinnSci.com Click on “Free MSDS” collection. Type in the name of your chemical correctly
in the search box. Find your chemical and click on it! Maybe
more than one!
*Extra Credit* Read your MSDS chemical data sheet. Print the MSDS sheet or e-mail a copy to me @ [email protected] 1. Find three interesting facts on your MSDS. 2. Tell me about any hazards? (fire, health, reactivity)
3. Any signal words on the container? 4. Where did you find this chemical? When is this due?...