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THALLIUMICSC: 0077
April 2013
CAS #: 7440-28-0Ramor
Thallium (metal)
UN #: 1707
EINECS #: 231-138-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.    PREVENT DISPERSION OF DUST.  In case of fire in the surroundings, use appropriate extinguishing media.   

See Notes.   
  SYMPTOMS ACUTE HAZARDS FIRST AID
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 CLASSIFICATION & LABELLING
Sweep spilled substance into sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

skull;toxiccancer;health haz
DANGER
Fatal if swallowed
May cause damage to gastrointestinal tract and the nervous system if swallowed 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Separated from strong acids, fluorine, other halogens and food and feedstuffs. Store only in original container. Well closed. 
PACKAGING
Do not transport with food and feedstuffs. 
THALLIUM ICSC: 0077
PHYSICAL & CHEMICAL INFORMATION

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. 

Formula: Tl
Atomic mass: 204.4
Boiling point: 1457°C
Melting point: 304°C
Relative density (water = 1): 11.9
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

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

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. 

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

Effects of long-term or repeated exposure
 


Occupational exposure limits
TLV: (inhalable fraction): 0.02 mg/m3, ppm, as TWA; (skin) 

ENVIRONMENT
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 ICSCs 0336 and 1221. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T+; R: 26/28-33-53; S: (1/2)-13-28-45-61 

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