ICSC 1596 - TANTALUM

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TANTALUM	ICSC: 1596 (October 2005)

CAS #: 7440-25-7

UN #: 3089

EC Number: 231-135-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. May ignite spontaneously on contact with air. Finely dispersed particles form explosive mixtures in air.	NO open flames, NO sparks and NO smoking. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use dry powder, dry sand, special powder. NO carbon dioxide, foam, water. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Avoid inhalation of dust.	Fresh air, rest.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Remove all ignition sources. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Cover the spilled material with dry inert absorbent. Vacuum spilled material with specialist equipment. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 4.1; UN Pack Group: II
STORAGE
Fireproof. Separated from strong oxidants and halogens.
PACKAGING
Airtight.

TANTALUM

ICSC: 1596

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance BLACK SOLID IN VARIOUS FORMS. Physical dangers Dust explosion possible if in powder or granular form, mixed with air. Chemical dangers Reacts with halogens and oxidants. This generates fire and explosion hazard.	Formula: Ta Atomic mass: 180.9 Boiling point: 5425°C Melting point: 2996°C Density: 14.5 g/cm³ Solubility in water: none Flash point: >250°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BLACK SOLID IN VARIOUS FORMS.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Chemical dangers
Reacts with halogens and oxidants. This generates fire and explosion hazard.

Formula: Ta
Atomic mass: 180.9
Boiling point: 5425°C
Melting point: 2996°C
Density: 14.5 g/cm³
Solubility in water: none
Flash point: >250°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure May cause mechanical irritation.	Inhalation risk A nuisance-causing concentration of airborne particles can be reached quickly when dispersed. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
May cause mechanical irritation.

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
MAK: (inhalable fraction): 4 mg/m³. MAK: (respirable fraction): 0.3 mg/m³; peak limitation category: II(8); pregnancy risk group: C; carcinogen category: 4

ENVIRONMENT

NOTES
Combustion in a confined space may turn into detonation.

ADDITIONAL INFORMATION

EC Classification

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