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THALLIUM
ICSC: 0077
Peer-Review Status: 12.04.2013 Validated
Ramor
Thallium (metal) 
CAS #: 7440-28-0 RTECS #: XG3425000
UN #: 1707
EC #: 081-001-00-3
EINECS #: 231-138-1
    Formula: Tl
Atomic mass: 204.4

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  PREVENT DISPERSION OF DUST.   
 
EXPOSURE See Notes.     
Inhalation No acute symptoms expected.  Use ventilation.   
Skin   Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes   Wear safety spectacles.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion Abdominal pain. Nausea. Vomiting. Headache. Weakness. Muscle pain. Blurred vision. Restlessness. Convulsions. Increased heart rate. Symptoms may be delayed. See Notes.  Do not eat, drink, or smoke during work. Wash hands before eating.  Refer immediately for medical attention. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T+; R: 26/28-33-53; S: (1/2)-13-28-45-61 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 
GHS Classification
Signal: Danger
Fatal if swallowed
May cause damage to gastrointestinal tract and the nervous system if swallowed 
skull;toxiccancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong acids, fluorine, other halogens and food and feedstuffs. Store only in original container. Well closed. 

IMPORTANT DATA
Physical State; Appearance
BLUISH-WHITE VERY SOFT METAL. TURNS GREY ON EXPOSURE TO AIR. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
The substance is a strong reducing agent. Reacts with strong acids. Reacts with fluorine and other halogens at room temperature. 

Occupational exposure limits
TLV (inhalable fraction as Tl): 0.02mg/m³ as TWA; (skin); (ACGIH 2012).
MAK (not established):.
EU OEL:. 

Routes of exposure
The substance can be absorbed into the body by ingestion. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly. 

Effects of short-term exposure
Ingestion could cause effects on the gastrointestinal tract and nervous system. Ingestion could cause hair loss. Ingestion of large amounts could cause death. The effects may be delayed. Medical observation is indicated. See Notes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 1457°C
Melting point: 304°C
Relative density (water = 1): 11.9
Solubility in water: none 
Environmental effects from the substance have not been investigated adequately. 

NOTES
The symptoms of neurological disorders do not become manifest until after a few days.
Depending on the degree of exposure, periodic medical examination is suggested.
Thallium metal is usually kept under mineral oil or an argon atmosphere.
Thallium salts may have different toxicological properties.
See also ICSC 0336, 1221. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       Thallium (EHC 182, 1996)
       Thallium (PIM 525)