Presentations text content in Chemical Hazard Labels
Slide1
Chemical Hazard Labels
April 2nd, 2013
Slide2Hazard Labels
Provide a quick guide into the dangers and acute hazards of chemicals
Not be used in lieu of reading MSDS
Different classification schemes
Should be able to recognize symbols from all of them.
Can prevent disasters and accidents if used properly
Slide3How many of these do you know?
Your hair may
spontaneously combust?
A guard just saw
s
omething wrong?
Killer starfish in
the area?
Slide4Old COSHH Symbols
Slide5New GHS Symbols
Slide6NFPA Warning Diamond
Diborane
Flammability
Health
Reactivity
Specific Hazards
Slide7Blue Health Section
0: Poses no known health hazard (water)
1: Exposure causes irritation or could result in residual injury (acetone)
2: Intense of continued exposure could cause incapacitation or possible residual injury (Et
2
O)
3: Short exposure could cause serious temporary or moderate residual injury (chlorine)
4: Very short exposure could cause death or major residual injury (CO, HCN)
Slide8Red Fire Section
0: Materials will not burn under typical conditions (CO
2
)
1: Materials that require considerable preheating before ignition and combustion (mineral oil) Flash Point (FP) > 93.4
o
C
2: Must be moderately heated or exposed to high ambient temps (diesel fuel) FP > 38
o
C
3. Liquids and solids that can be ignited under almost all ambient conditions (gasoline) FP > 23
o
C
4: Will rapidly or completely vaporize at normal
atomospheric
pressure and temperature or will burn readily (acetylene) FP < 23
o
C
Slide9Yellow Reactivity Section
0: Normally stable, even under fire exposure and does not react with water (He)
1: Normally stable but unstable at elevated temperatures and pressures (propene)
2: Undergoes violent chemical changes at high temp. or pressure, reacts violently with water (sodium)
3: Capable of detonation or explosive decomposition but require initiating source, reacts explosively with water, or when severely shocked (ammonium nitrate)
4: Readily capable of detonation or explosive decomposition at normal temp. and pressures (nitroglycerin)
Slide10White Specific Hazard Section
OX: Oxidizer (hydrogen peroxide)
SA: Simple
asphyxiant
gas (argon)
W
:
Reacts with water in an unusual or dangerous manner (cesium)
ACID: Acidic (
HCl
)
ALK: Alkaline (KOH)
COR: Corrosive (dimethyl sulfate)
RAD: Radioactive (uranium)
BIO: Biological Hazard (smallpox)
POI: Poisonous (Strychnine)
Slide11Summary of NFPA Warning Diamond
Slide12Other Useful Symbols to Know
Radioactive
Biohazard
Chemical Weapons
Chemical Hazard Labels
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