ICSC 0986 - TELLURIUM

TELLURIUM	ICSC: 0986 (April 2000)
Aurum paradoxum Metallum problematum

CAS #: 13494-80-9

EC Number: 236-813-4

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Finely dispersed particles form explosive mixtures in air.	NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use foam, carbon dioxide, dry powder.

PREVENT DISPERSION OF DUST! STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Drowsiness. Metallic taste. Headache. Garlic odour. Nausea.	Use local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Wear 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 refer for medical attention.
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	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Separated from halogens and interhalogens.
PACKAGING
Unbreakable packaging. Put breakable packaging into closed unbreakable container.

TELLURIUM

ICSC: 0986

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance DARK GREY-TO-BROWN AMORPHOUS POWDER, WITH METAL CHARACTERISTICS OR SILVERY-WHITE, LUSTROUS CRYSTALLINE SOLID. Physical dangers Chemical dangers Upon heating, toxic fumes are formed. Decomposes on heating. This produces toxic fumes. Reacts vigorously with halogens and interhalogens. This generates fire hazard. Reacts with zinc with incandescence. Lithium silicide attacks tellurium with incandescence.	Formula: Te Atomic mass: 127.6 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

PHYSICAL & CHEMICAL INFORMATION

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

Physical dangers

Chemical dangers
Upon heating, toxic fumes are formed. Decomposes on heating. This produces toxic fumes. Reacts vigorously with halogens and interhalogens. This generates fire hazard. Reacts with zinc with incandescence. Lithium silicide attacks tellurium with incandescence.

Formula: Te
Atomic mass: 127.6
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

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol. Effects of short-term exposure The aerosol is irritating to the eyes and respiratory tract. The substance may cause effects on the liver and central nervous system. Exposure could cause garlic-like breath. Medical observation is indicated.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

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

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

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

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.1 mg/m³, as TWA

ENVIRONMENT

NOTES
Do NOT take working clothes home.

ADDITIONAL INFORMATION

EC Classification

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.

    See Also:
       Toxicological Abbreviations
       Tellurium (UKPID)