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Hazards by class
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Bases
Precautions:• Wear gloves• Protect metals (cover with
plastic)
• Wipe off seal after each use before closing
White Label
DDC 01xx
Examples:• 1• 2• 3• 4
Corrosive
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Acids
Precautions:• Separate organic and inorganic• Wear gloves• Protect metals (cover with
plastic)• Wipe off seal after each use
before• closing
White Label
DDC 02xx
Examples: (with cap color)• Acetic Acid—Brown• Phosphoric Acid—White• Hydrochloric Acid—Blue • Sulfuric Acid—Yellow • Nitric Acid—Red
Corrosive
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Oxidizers
Precautions:• Keep away from
combustible materials
DDC 16xx
Examples:• Sodium hypochlorite• Potassium
permanganate• Peroxides• Perchlorates• Nitrates
Oxidizing
Yellow Label
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Flammables
Precautions:• Keep away from
oxidizers and ignition sources
Red Label
DDC 08xx
Examples:• Many solvents
– Acetone, ether, methanol, benzene
• Phosphorus• Magnesium
Flammable
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Reactive
Precautions:• Keep well sealed• Protect against moisture and
vibration • Isolate from atmosphere by
storing under inert gas (Nitrogen) or liquid (oil)
DDC 04xx, 12xx
Examples:Water reactive:
– Na/K/Li metal – Metal hydrides
Shock reactive: – Organic peroxides– Heavy metal azides
Reacts with AirWaterShock
Yellow Label
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Inhalation Hazard
Precautions:• Keep well sealed
Blue Label
DDC ##PH
Examples:• Methyl iodide• Methylamine• Thionyl chloride• Silica• Ammonia
Toxic if inhaled
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Toxic
Precautions:• Do not swallow, touch, or
inhale• Wash hands after handling
Blue Label
DDC 18xx
Examples:• Cyanides• Azides• Sulfides• DMSO• Chloroform
Toxic if swallowed
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Low Hazard
Precautions:• Keep liquids below eye level
Grey Label
DDC 05xx, 06xx
Examples:• Halogen salts• Buffers• Chemicals with low
reactivity (lots of examples)
Orange Label
Green Label
Irritant
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Radioactive
Precautions:• Authorized users only!• Leave shielding in place• What about the testing /
monitoring badges/ rings?
DDC ##RA
Examples:• 3H• 14C• 32P• 125I• 35S
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Biohazard
Precautions:• Materials must be
inactivated before disposal
Examples:• E. coli• S. cerevisiae• Salmonella• Viruses
May also be:ToxicHarmful to environment
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Mercury or Heavy Metal
Precautions:• Materials must be disposed
as hazardous waste
Examples:• Mercury• Cadmuim• Lead
ToxicHarmful to environment
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Carcinogen
Precautions:• Do not swallow, touch or
inhale • Use appropriate gloves
Examples:• Arsenic• Beryllium• Benzene• Formaldehyde• Vinyl Chloride
Cancer causingToxic
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Reproductive Toxin
Precautions:• Do not swallow, touch or
inhale • Use appropriate gloves
Examples:• Selenium/ Tellurium• Methylene chloride• Chloroform• Arsenic• Xylene
Toxic
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Nanoparticle
Precautions:• Do not swallow, touch or
inhale • Use appropriate gloves• Keep well sealed
Examples:• Au (gold)• Ag (silver)• Mesoporous silica• Iron oxide
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Time Sensitive Materials
DDC ##PFPeroxide formers
Precautions:• Avoid metal caps, heat, light• Visually check for crystals• Test every 1, 3, 6 or 12
months• Dispose if > 80 ppm
peroxides or > 2 yrs
Examples:• Diethyl Ether • Tetrahydrofuran
(THF)• Dioxane
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Sensitive Materials Temperature sensitive
store at proper temperature
Precautions:• Store in secondary
containers to segregate hazards
Light sensitivestore in the dark
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Sensitive to HumiditySome chemicals need to be kept
• Dry– Store in dessicant to
remove humidity. – Protect from moisture.
• Moist– Store in
overpack with wet towel.
– Do NOT allow to dehydrate
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Pressure Difference
Precautions:Do not heat, cool, or attempt to open while under pressure
Protect from impact
VacuumRisk of Projectiles
• Secure upright• Transport in a
secure cart
Compressed GasPressurized materials
• Use plastic netting to control glass shards if implosion
• Apply grease to seal
DDC ##CG