safety first!
DESCRIPTION
STHS:. SAFETY FIRST!. Mrs. Cannatelli C202 A. FOLLOW ALL INSTRUCTIONS. Instructions may be verbal or written. Read instructions carefully. Do not perform unauthorized experiments. Know about hazards before you begin. READING + KNOWING = SUCCESS. ACT IN A RESPONSIBLE MANNER AT ALL TIMES. - PowerPoint PPT PresentationTRANSCRIPT
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SAFETY FIRST!
Mrs. CannatelliC222
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FOLLOW ALL INSTRUCTIONS
Instructions may be verbal or written. Read instructions carefully.
Do not perform unauthorized experiments.
Know about hazards before you begin. READING + KNOWING = SUCCESS
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ACT IN A RESPONSIBLE MANNER AT ALL TIMES
The laboratory is a work place.
The laboratory is not a playroom.
Horseplay will not be tolerated.
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KNOW YOUR SAFETY EQUIPMENT
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
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WEAR YOUR SAFETY GOGGLES
for laboratory activities involving:
chemicalsheating of materials
glassware
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STAY OUT OF RESTRICTED AREAS
Certain areas may present special hazards
ex. the chemical room in the front.
Enter restricted areas only with teacher permission.
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KEEP YOUR WORK AREA CLEAR
Keep personal items not needed for an experiment away from the lab area.
Keep aisles free of all obstructions (book bags etc.).
Place equipment and materials not needed for a lab activity in their proper storage area.
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CLEAN UP ALL SPILLS Tell your teacher what was spilled. React quickly and quietly Clean up minor spills with paper towels. Clean up a solid spill with a broom and
dustpan and dispose of it where indicated by your teacher.
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BROKEN GLASSWARE Clean up broken glassware with a
broom and dustpan. Dispose of broken glassware in the
special box provided in the lab area. Inform the teacher of the break and get
a replacement.
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INSTRUCTIONS WHEN USING HOTPLATES
Do not play with gas valves. Do not leave Bunsen burners or
hotplates unattended. Turn off Bunsen burners or hotplates
when they are not being used.
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ELECTRICAL HAZARDS
The main concern when using electricity in laboratory situations is electrical shock.
The human body is a good conductor of electricity
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MECHANICAL HAZARDS Spinning components can cut skin or
clothing. The main concern is that loose clothing
or hair will be caught in the machinery. Objects that come into contact with a
spinning component can cause sparks or can damage the equipment.
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HAIR INSTRUCTIONS Tie back long hair when using
chemicals, heat, or equipment with gears or spinning parts.
Hair preparations such as hairspray, gels, and mousse are often very flammable. Their use in a lab situation is discouraged.
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PROPER USE OF CHEMICALS AND
EQUIPMENT Use equipment in the manner indicated by
your teacher. Read the labels on chemicals very
carefully. Equipment and chemicals are NOT to be
removed from the laboratory without teacher permission
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THE RIGHT TO KNOW LAW
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DELAWARE’S HAZARDOUS CHEMICAL INFORMATION
ACT
Is better known as
THE RIGHT TO KNOW LAW
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A Hazard Communication is: A written document detailing the
hazards of using a particular chemical A sign warning of the potential dangers
of a particular chemical in the vicinity The label on a container instructing one
on the use of that particular chemical Any Communication warning one of a
hazard
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THE RIGHT TO KNOW LAW REQUIRES THAT YOU BE
INFORMED OF:
THE IMMEDIATE DANGERS WHEN USING A CHEMICAL (ACUTE)
POSSIBLE LONG TERM HEALTH EFFECTS OF USING A CHEMICAL (CHRONIC)
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ACUTE EXPOSUREExposure to a lot of chemical substance in a
short period of time. A reaction that happens right away or within minutes or hours. (burns, rashes, nausea)
CHRONIC REACTION
• Exposure to a small amount of chemical substance over a long period of time. •A reaction may take years to develop. (smokers hack)
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POSSIBLE LONG TERM (Chronic)
HEALTH EFFECTS OF SOME CHEMICALS
Cancer Respiratory problems Birth defects Mutations Tumors
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CONCENTRATIONS DILUTED~ to make (a liquid) thinner or
weaker by the addition of water or the like.
CONCENTRATED~ to intensify; make denser, stronger, or purer, esp. by the removal or reduction of liquid
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IMMEDIATE DANGERS WHEN USING A CHEMICAL
Fires Explosions Irritations to the eyes or skin Burns to the skin Poisoning
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WHY DO WE NEED TO KNOW ABOUT CHEMICAL HAZARDS ???? To protect oneself To protect our environment To protect others
Each year millions of Americans are exposed to chemicals. It is up to each of us to protect ourselves, our environment, and each other.
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Key Words Caution Warning Danger
These words are often followed by such words as:
•Combustible•Flammable •Explosive•Oxidizer•Reactive
•Corrosive•Poison•Irritant•Carcinogen (causesCancer)•Toxic
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COMMON ROUTES OF EXPOSURE
• Ingestion• Skin / Eye Contact• Inhalation
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Materials present hazards in three ways
Health Fire Reactivity
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HOW DO WE KNOW WHAT IS HAZARDOUS?
Label contents Color coding on the containers Number system on the containers MSDS - Material Safety Data Sheets
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LABEL CONTENTS
Name of the chemical Chemical formula Hazard warning Manufacturer name for further safety
information if needed
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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
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Chemical Warning Labels
Chemical warning labels may have the following information listed:
Identity of chemical Signal word Hazard Statement Precautions
Fire, Spill and leak instructions
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COLOR CODING ON CONTAINERS
RED - FLAMMABLE
YELLOW - REACTIVE
BLUE - TOXIC OR POISONOUS
WHITE - CORROSIVE OR CAUSTIC
GREEN - RELATIVELY NONHAZARDOUS
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NUMBER SYSTEM4 - extremely toxic, flammable, or reactive3 - very toxic, flammable, or reactive2 - moderately toxic, flammable, or
reactive1 - irritating, flammable if preheated, or
reactive if preheated0 - not known to be toxic, flammable, or
reactive
D.O.T. classifications
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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
Material Safety Data sheet
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Tolerance Limit Value (TLV)or Permissible exposure Limit (PEL)
The amount of exposure that a human being can be exposed to a particular hazardous substance without having side affects.
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Parts per million (ppm)The amount of any substancedispersed into another.
If you were to drop a 10 grams of Kool-Aid powder into a million gramsof water you would have a solution containing 10 parts of Kool-Aid to 1 million parts of water or simply just 10 ppm of Kool-Aid to water.
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Where do you find MSDS in school? Nurses office Main office Janitors closets Labs Wellness center
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Vocabulary to Know Acute Asphyxiant “C” or ceiling Carcinogen Chronic Combustible Concentration Corrosive Cutaneous Dermal
• EPA• DOT• Flash point• Ignitable• Ingestion• Inhalation• Irritant• Lethal concentration• Lethal Dose• Mutagen• Narcosis•
•Oxidation•Reactivity •Sensitizer• Teratogen• Toxicity• Toxic• PEL• TLV