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MAGNESIUM (POWDER) ICSC: 0289
Date of Peer Review: April 2000

CAS # 7439-95-4 Mg
RTECS # OM2100000 Atomic mass: 24.30
UN # 1418
EC Index # 012-001-00-3 (pyrophoric)
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, acids, halogens and many other substances.
Special powder, dry sand, NO other agents. NO water.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Do NOT expose to friction or shock. Prevent build-up of electrostatic charges (e.g., by grounding).

EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough. Laboured breathing. Headache. Dullness. Weakness. Fever or elevated body temperature.


Skin


Eyes Redness. Pain.
Safety goggles.

Ingestion Abdominal pain. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Personal protection: P2 filter respirator for harmful particles.
Airtight.
EU 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: ll
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-43GWS-II+III
NFPA Code: H0; F1; R2;
Fireproof. Separated from strong oxidants, acids. Dry.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
MAGNESIUM (POWDER) ICSC: 0289
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 spontaneously ignite on contact with air or moisture producing irritating or toxic fumes. Reacts violently with strong oxidants. Reacts violently with many substances causing fire and explosion hazard. Reacts with acids and water forming flammable/explosive gas (hydrogen - see ICSC0001), causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
Inhalation of fumes may cause metal fume fever.

PHYSICAL PROPERTIES
Boiling point: 1100C
Melting point: 651C
Density: 1.7 g/cm
Solubility in water: none
Auto-ignition temperature: 473C
Explosive limits, vol% in air: see Notes
ENVIRONMENTAL DATA

NOTES
Burns with an intense flame. In order to prevent eye injury do not look directly at magnesium fires. Reacts violently with fire extinguishing agents such as water, carbon dioxide and powder. Explosive limits, vol% in air: (LEL) 0.03 kg/m. Card has been partly updated in October 2005. See section Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005