Dimercury dichloride
Calomel
Cl2Hg2
Molecular mass: 472.09
ICSC # 0984
CAS # 10112-91-1
RTECS # OV8740000
UN # 3077
EC # 080-003-00-1
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
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In case of fire in the surroundings: all extinguishing agents allowed.
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Explosion
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Exposure
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AVOID ALL CONTACT!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Cough.
Sore throat.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
Redness.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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•Eyes
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Redness.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Diarrhoea.
Vomiting.
Metallic taste.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
(Extra personal protection: P3 filter respirator for toxic particles).
Do NOT wash away into sewer.
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Separated from
food and feedstuffs
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Keep in the dark.
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Severe
marine pollutant.
Xn symbol
N symbol
R: 22-36/37/38-50/53
S: 2-13-24/25-46-60-61
UN Hazard Class: 9
UN Packing Group: III
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Important Data
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Physical State; Appearance:
WHITE
CRYSTALLINE POWDER.
Physical Dangers:
Chemical Dangers:
The substance decomposes
slowly
under influence of
light
producing mercuric chloride and mercury.
Occupational Exposure Limits:
TLV (as Hg): 0.025 mg/m3 (skin) A4 (ACGIH 1999).
MAK as Hg: 0.1 mg/m3 BAT 25 ug/l in blood; 100 ug/l in urine (1999) MAK as Hg STEL: 1 mg/m3 (1999)
MAK: class Sh (1999)
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
through the skin and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly
when dispersed
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Effects of Short-Term Exposure:
The substance
irritates
the eyes,
the skin
and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
central nervous system
,
kidneys and
peripheral nervous system
, resulting in ataxia, sensory and memory disturbances, fatigue, muscle weakness and
kidney impairment.
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Physical
Properties
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Sublimation point: 400-500°C
Density: 7.15
g/cm3
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Solubility in water, g/100 ml at 25°C:
none
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Environmental
Data
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The substance is very toxic to aquatic organisms.
It is strongly advised not to let the chemical enter into the environment because it persists in the environment.
Avoid release to the environment in circumstances different to normal use.
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N O T E S
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Do NOT take working clothes home.
Cyclosan, M-C Turf fungicide are trade names.
Depending on the degree of exposure, periodic medical examination is indicated.
Transport Emergency Card: TEC (R)-90G02
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ADDITIONAL INFORMATION
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ICSC: 0984
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MERCUROUS CHLORIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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