International Chemical Safety Cards

MAGNESIUM (POWDER) ICSC: 0289

MAGNESIUM (POWDER)
(powder)
Mg
Atomic mass: 24.3
CAS # 7439-95-4
RTECS # OM2100000
ICSC # 0289
UN # 1418
EC # 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 or various other substances.
Special powder, dry sand, NO other agents. NO hydrous 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


INHALATION Cough. Laboured breathing.


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 STORAGE PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).
Fireproof. Separated from strong oxidants, acids, carbonates, halogens (see Chemical Dangers). Dry.
Airtight.
F symbol
R: 15-17
S: (2-)7/8-43
UN Hazard Class: 4.3
UN Subsidiary Risks: 4.2
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0289 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

MAGNESIUM (POWDER) ICSC: 0289

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PHYSICAL STATE; APPEARANCE:
SILVERY, POWDERED METALLIC SOLID.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
The substance may spontaneously ignite on contact with air or moisture producing irritating or poisonous gases including magnesium oxide. Reacts violently with strong oxidants. Reacts violently with many substances causing fire and explosion hazard. Reacts with acids or water forming flammable hydrogen gas (see ICSC # 0001), causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.
PDK not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

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

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

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
 Boiling point: 1100°C
Melting point: 651°C
Relative density (water = 1): 1.7
 Solubility in water: none
Auto-ignition temperature: 473°C
ENVIRONMENTAL
DATA
N O T E S
Burns with an intense flame. Reacts violently with fire extinguishing agents such as water, carbon dioxide and powder.
ADDITIONAL INFORMATION


ICSC: 0289 MAGNESIUM (POWDER)
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or 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. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.