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Chemical Hazard Labels

Chemical Hazard Labels. April 2 nd , 2013. Hazard 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.

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Chemical Hazard Labels

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  1. Chemical Hazard Labels April 2nd, 2013

  2. Hazard 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

  3. How many of these do you know? Your hair may spontaneously combust? Killer starfish in the area? A guard just saw something wrong?

  4. Old COSHH Symbols

  5. New GHS Symbols

  6. NFPA Warning Diamond Flammability Reactivity Health Specific Hazards Diborane

  7. Blue 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 (Et2O) 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)

  8. Red Fire Section 0: Materials will not burn under typical conditions (CO2) 1: Materials that require considerable preheating before ignition and combustion (mineral oil) Flash Point (FP) > 93.4oC 2: Must be moderately heated or exposed to high ambient temps (diesel fuel) FP > 38oC 3. Liquids and solids that can be ignited under almost all ambient conditions (gasoline) FP > 23oC 4: Will rapidly or completely vaporize at normal atomospheric pressure and temperature or will burn readily (acetylene) FP < 23oC

  9. Yellow 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)

  10. White 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)

  11. Summary of NFPA Warning Diamond

  12. Other Useful Symbols to Know Radioactive Biohazard Chemical Weapons

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