ICSC 0986 - TELLURIUM

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TELLURIUM

ICSC: 0986
_{April 2000}

Aurum paradoxum
Metallum problematum

CAS No: 13494-80-9
RTECS No: WY2625000

(powder)
Te
Atomic mass: 127.6

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Foam, carbon dioxide, dry powder.
EXPLOSION	Finely dispersed particles form explosive mixtures in air.	Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE		PREVENT DISPERSION OF DUST! STRICT HYGIENE!
Inhalation	Drowsiness. Dry mouth. Metal taste. Headache. Garlic odour. Nausea.	Local exhaust or breathing protection.	Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety goggles or eye protection in combination with breathing protection if powder.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Abdominal pain. Constipation. Vomiting. (Further see Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into sealed containers. Carefully collect remainder, then remove to safe place. (Extra personal protection: P3 filter respirator for toxic particles).		Unbreakable packaging; put breakable packaging into closed unbreakable container.

EMERGENCY RESPONSE	STORAGE
Transport Emergency Card: TEC (R)-61G64c	Separated from halogens and interhalogens.

IMPORTANT DATA

Physical State; Appearance
DARK GRAY TO BROWN AMORPHOUS POWDER, WITH METAL CHARACTERISTICS OR SILVERY-WHITE, LUSTROUS CRYSTALLINE SOLID.

Chemical dangers
Upon heating, toxic fumes are formed. Reacts vigorously with halogens or interhalogens causing fire hazard. Reacts with zinc with incandescence. Lithium silicide attacks tellurium with incandescence.

Occupational exposure limits
TLV: 0.1 mg/m³ (ACGIH 1999).

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

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

Effects of short-term exposure
The aerosol of this substance irritates the eyes and the respiratory tract. The substance may cause effects on the liver and central nervous system. Exposure may result in garlic-like breath. Medical observation is indicated.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 989.8°C Melting point: 449.5°C Density: 6.0-6.25 g/cm³ Solubility in water: none Auto-ignition temperature: 340°C

NOTES

Do NOT take working clothes home.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2000

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Updated by AS. Approved by EC. Last update: 10.10.2000