Mercuric compounds
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Mercuric compounds. Byung Joon Lim 5/14/2013. Dr. Karen Wetterhahn (1948-1997). A professor of chemistry at Dartmuth college Studied the toxicity of heavy metals A few drops of dimethylmercury on the protective latex gloves

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Mercuric compounds

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Mercuric compounds

Mercuric compounds

ByungJoon Lim

5/14/2013


Dr karen wetterhahn 1948 1997

Dr. Karen Wetterhahn(1948-1997)

  • A professor of chemistry at Dartmuth college

  • Studied the toxicity of heavy metals

  • A few drops of dimethylmercuryon the protective latex gloves

  • After six months, she suddenly became ill and died due to mercury poisoning

  • Surprisingly, she was taking all required PPE known at that time.

http://en.wikipedia.org/wiki/Karen_Wetterhahn


Mercury

Mercury

  • Elemental mercury

    • Volatile and very toxic liquid

  • Inorganic mercury (Salts)

    • Toxic and corrosive

    • Mercury fulminate (HgONC)2: Detonator

    • Mercury (II) oxide: Strong oxidant

  • Organic mercury

    • Alkyl mercury: Extremely toxic and highly flammable

    • Aryl mercury: Various toxicity. Less toxic than alkyl ones

      c.f. Merbromine (mercurochrome) – Used as antiseptic


Toxicity

Toxicity

  • ALL forms of mercury are very toxic!

  • Attack central nerve system

  • Tremors, impaired vision and hearing, and paralysis

  • Bioaccumulate in food chains

  • Poisoned by inhalation and direct absorption through SKIN


Handling

Handling

  • Similar to other toxic materials

  • All PPEs

    • Lab coats, safety goggles, and proper gloves

  • Always in fume hood

  • Contact to EHS when you handle very toxic alkylmercuric compounds


Waste disposal

Waste disposal

  • Similar to other toxic materials

  • EVERYwaste should be stored in the fume hood until they can be removed from the lab.

  • All mixtures containing mercury in any formmust be disposed of as mercury contaminated waste and handled separately.


Mercury spilling

Mercury spilling

  • Small spill

    • Collect droplets by hard papers or pipets

    • Use mercury spill kit: Amalgamate the mercury to avoid vapor emission

    • Or Call EHS

  • Larger spill (more than a thermometer)

    • Evacuate immediately and isolate the place

    • Call EHS

    • Lower the room temperature


Alkylmercury spilling

Alkylmercury spilling

  • Evacuate immediately and isolate the place

  • Call EHS

  • De-energize all sources of ignition

http://www.ehs.gatech.edu/chemical/mercury_and_compounds.pdf

http://www.esd.uga.edu/chem/pub/mercuryspill.pdf

http://oes.tamu.edu/guidelines/mercury/EPO_Mercury_Safe_a.pdf


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