ICSC 0289 - MAGNESIUM (POWDER)

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MAGNESIUM (POWDER)

ICSC: 0289
_{April 2000}

CAS No: 7439-95-4
RTECS No: OM2100000
UN No: 1418
EC No: 012-001-00-3 (pyrophoric)

Mg
Atomic mass: 24.30

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.	F Symbol R: 15-17 S: (2-)7/8-43 UN Hazard Class: 4.3 UN Subsidiary Risks: 4.2 UN Pack Group: ll	Airtight.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-43GWS-II+III NFPA Code: H0; F1; R2	Fireproof. Separated from strong oxidants, acids. Dry.

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 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.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
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

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/m³.
Card has been partly updated in October 2005. See section Emergency Response.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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