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MAGNESIUM (POWDER)
ICSC: 0289
Peer-Review Status: 09.06.2011 Validated
 
CAS #: 7439-95-4 RTECS #: OM2100000
UN #: 1418
EC #: 012-001-00-3 (pyrophoric)
EINECS #: 231-104-6
    Formula: Mg
Atomic mass: 24.3

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking. NO contact with moisture or any other substances.  Use dry sand, special powder. NO water. NO other agents. See Notes. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  PREVENT DISPERSION OF DUST. Closed system, dust explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding).   
 
EXPOSURE      
Inhalation Cough. Sore throat. Shortness of breath.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation in the mouth.  Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Remove all ignition sources. Consult an expert! Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered dry containers. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT wash away into sewer.  Airtight. 
EC Classification
Symbol: F; R: 15-17; S: (2)-7/8-43 
UN Classification
UN Hazard Class: 4.3; UN Subsidiary Risks: 4.2; UN Pack Group: I, II, III 
GHS Classification
Signal: Danger
In contact with water releases flammable gases
Catches fire spontaneously if exposed to air 
flam;flame

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H0; F1; R1.  Fireproof. Dry. Well closed. Separated from other incompatible materials. 

IMPORTANT DATA
Physical State; Appearance
GREY POWDER. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. 

Chemical dangers
The substance may ignite spontaneously on contact with air and moisture. This produces irritating or toxic fumes. Reacts with oxidants and many other substances. Reacts with moisture and acids. This produces flammable/explosive gas (hydrogen - see ICSC 0001). This generates fire and explosion hazard. 

Occupational exposure limits
TLV not established.
MAK (not established):.
EU OEL:. 

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

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed. 

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. 

Effects of long-term or repeated exposure
Lungs may be affected by repeated or prolongated exposure to dust particles. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 1100°C
Melting point: 649°C
Density: 1.7 g/cm³
Solubility in water: reaction
Auto-ignition temperature: 473 °C
Explosive limits, vol% in air: see Notes 
 

NOTES
Burns with an intense flame.
In order to prevent eye injury do not look directly at magnesium fires.
Explosive limits, vol% in air: (LEL) 0.03 kg/m³.
See also ICSC 0701.
Reacts violently with fire extinguishing agents such as water, carbon dioxide, halons, powder and foam. 

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