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MOLYBDENUMICSC: 1003
October 2006
CAS #: 7439-98-7
UN #: 3089
EINECS #: 231-107-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible under specific conditions.  Finely dispersed particles form explosive mixtures in air.    Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.  In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Rinse skin with plenty of water or shower. 
Eyes Redness.  Wear safety spectacles.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). 
Ingestion   Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give one or two glasses of water to drink. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 4.1; UN Pack Group: II, III 

STORAGE
Separated from strong oxidants, halogens and strong acids. 
PACKAGING
 
MOLYBDENUM ICSC: 1003
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
SILVER-WHITE LUSTROUS METAL OR DARK GREY POWDER. 

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

Chemical dangers
Reacts violently with oxidants, halogens and concentrated nitric acid. This generates fire hazard. 

Formula: Mo
Atomic mass: 95.9
Boiling point: 4612°C
Melting point: 2617°C
Density: 10.2 g/cm³
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
See Notes. 

Inhalation risk
 

Effects of long-term or repeated exposure
See Notes. 


Occupational exposure limits
TLV: (inhalable fraction): 10 mg/m3, ppm, as TWA; (respirable fraction): 3 mg/m3, ppm, as TWA 

ENVIRONMENT
 

NOTES
Health effects of exposure to the substance have not been investigated adequately.
Environmental effects from the substance have not been investigated. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations