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NIOSH

MAGNESIUM (POWDER)

ICSC: 0289

Mg
ICSC # 0289 		CAS # 7439-95-4
RTECS # OM2100000
UN # 1418
EC # 012-001-00-3 (pyrophoric)
December 04, 2000 Validated

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

STORAGE

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.
Fireproof. Separated from strong oxidants, acids. Dry.
Airtight.
F symbol
R: 15-17
S: 2-7/8-43
UN Hazard Class: 4.3
UN Subsidiary Risks: 4.2
UN Packing Group: ll
ICSC: 0289 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

MAGNESIUM (POWDER)

ICSC: 0289

I

M

P

O

R

T

A

N

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D

A

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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 20°C 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.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 1100°C
Melting point: 651°C
Density: 1.7
g/cm3
Solubility in water:
none
Auto-ignition temperature: 473°C
Explosive limits, vol% in air: see Notes

ENVIRONMENTAL
DATA


N O T E S

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/m3. Card has been partly updated in October 2005. See section Emergency Response.
Transport Emergency Card: TEC (R)-43GWS-II+III

NFPA Code: H0; F1; R2;

ADDITIONAL INFORMATION



ICSC: 0289 MAGNESIUM (POWDER)
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, 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. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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