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HC061 Mercury and Cadmium

The document provides risk assessment guidance for handling mercury and cadmium, highlighting their toxic effects, including potential fatality if inhaled and long-term organ damage. It outlines safety measures, emergency procedures, and disposal guidelines for these hazardous substances. Additionally, it emphasizes the importance of using protective equipment and proper storage methods to mitigate risks associated with exposure.

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0% found this document useful (0 votes)
23 views2 pages

HC061 Mercury and Cadmium

The document provides risk assessment guidance for handling mercury and cadmium, highlighting their toxic effects, including potential fatality if inhaled and long-term organ damage. It outlines safety measures, emergency procedures, and disposal guidelines for these hazardous substances. Additionally, it emphasizes the importance of using protective equipment and proper storage methods to mitigate risks associated with exposure.

Uploaded by

byron.aram7
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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       Risk  Assessment  Guidance   Mercury  and  cadmium  


Mercury     Hg  (200.59)  
Cadmium     Cd  (112.411)  
Both:  Fatal  if  inhaled  [H330].  Causes  damage  to  organs  through  prolonged  or  repeated  exposure  [H372].  
Very  toxic  to  aquatic  life  with  long  lasting  effects  [H400/H410].  
Mercury:  May  damage  the  unborn  child  [H360D].    
 
Cadmium:  Suspected  of  causing  genetic  defects  [H341].  May  cause  cancer  [H350].  Suspected  of  
damaging  fertility.  Suspected  of  damaging  the  unborn  child  [H361fd].    
  Mercury  is  dangerous  in  contact  with:  
• ALKALI  METALS,  BROMINE,  CHLORINE.  A  violent  reaction  can  occur.  
• ALUMINIUM.  Ignition  may  occur.  
  • AMMONIA.  Explosive  solids  form  after  a  period  of  contact.  
DANGER   WEL  (mg  m-­‐3):  0.02  (LTEL),  0.06  (STEL);  mercury;  0.025  (LTEL),  0.075  (STEL),  Carc;  cadmium  
Storage  code:  T  
• Mercury  (silvery-­‐grey  liquid):  Use  plastic  bottles  and  only  fill  to  one-­‐third  of  their  volume.  Do  not  
Storage   attempt  to  clean  mercury  yourself,  except  to  remove  surface  dirt/dust  by  shaking  with  sticky  tape  in  a  
strong  bottle  or  to  remove  surface  water  using  filter  paper.  
• Cadmium  (silvery-­‐white  solid):  an  exhibition  sample  may  be  kept  in  a  closed  container.  
 

Follow  standard  procedures  (see  Emergency  Hazcards  and  GL  120).  NOTE  for  mercury:  
 

• If  swallowed:  Call  111  and  follow  the  advice.  


• Spills  on  skin  or  clothes:  Remove  contaminated  clothing.  Carefully  wash  any  contaminated  area(s).  
Emergencies   Check  jewellery  and  consult  a  jeweller  if  silver-­‐coloured  staining  (mercury  amalgam)  is  found.    
• General  spills:  For  details  see  Mercury  spills  (CLEAPSS  website).  Contact  CLEAPSS  if  you  need  further  
advice.  Retain  all  residues,  contaminated  cloths  and  gloves  for  collection  and  disposal  by  a  Registered  
Waste  Carrier.  See  Disposal  on  reverse.  
     

Read  this  Hazcard  in  conjunction  with  About  Hazcards  (guide  GL  120)                                                                                                      Hazcards  2016  Edition  ©CLEAPSS  (Updated:  09/16)  
61        Risk  Assessment  Guidance   Mercury  and  cadmium  
Detailed  guidance  on  specific  activities  and  techniques  involving  these  substances  can  be  found  at:  www.cleapss.org.uk  

General  use  of:   Hazard  information   User   Suggested  general  control  measures  and  guidance  
• Have  a  mercury  spills  kit  to  hand  whenever  mercury-­‐containing  measuring  
devices  or  mercury  itself  are  used.  Clear  spills  promptly.    
      • Wear  eye  protection  as  required  by  the  activity.  
TT   • Remove  jewellery/watches  and/or  wear  gloves.    
Mercury   (Y12)   • Wash  hands  thoroughly  after  safely  disposing  of  gloves.  
 
• Do  not  expose  the  metal  to  the  open  air  for  long  periods  (vapour  risk).  
DANGER    
(See  reverse)  
• Never  heat  mercury  except  in  an  efficiently-­‐working  ducted  fume  cupboard.  
• Do  not  use  mercury  thermometers  in  ovens  or  incubators.  
Serious  poisoning  is  very  rare  in  schools.   • Do  not  use  mercury  to  fill  gaps  between  a  thermometer  and  any  apparatus  
The  risk  is  mainly  to  technicians  or  teachers   being  heated  (eg,  the  metal  block  in  calorimetry/melting-­‐point  apparatus;  
exposed  over  long  periods  of  time  to  low   Quickfit  apparatus).  
vapour  concentrations  from  spilt  mercury  
Other  notes;  see  also  detailed  activity-­‐specific  guidance:  
that  was  not  cleared  up.    
• Thermometers  and  other  measuring  devices:    
If  concerned,  seek  medical  advice.  
• For  temperature  measurements,  use  alternatives  such  as  spirit  
CLEAPSS  offers  a  mercury  monitoring   thermometers  or  digital  temperature  probes/data  loggers  where  possible.    
service  (fee  charged)  but  note  that  
• Although  m ercury-­‐containing  m easuring  devices  are  no  longer  available  
monitoring  is  needed  only  if  there  is  the  
possibility  of  concealed  mercury  (eg,  after  a   for  purchase,  those  already  held  in  schools  may  still  be  used  if  necessary  
major  spill,  in  an  old  building  etc).   (eg,  thermometers  for  some  melting  point  determinations).  
 
 
 
 
 
 
 

Follow  general  guidance  in  About  Hazcards  (GL  120).  NOTE:  


 
 

Disposal   • W1,  W2  only:  Retain  all  mercury-­‐containing  waste  for  specialist  disposal  by  a  Registered  Waste  Carrier.  This  
includes  small  amounts  in  threads  of  broken  thermometers,  etc.  Keep  secure  in  sealed  bags/plastic  bottles.  
 

Read  this  Hazcard  in  conjunction  with  About  Hazcards  (guide  GL  120)                                                                                                      Hazcards  2016  Edition  ©CLEAPSS  (Updated:  09/16)  

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