ICSC 1405 - ZIRCONIUM

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

ZIRCONIUM

ICSC: 1405
_{October 2004}

(unstable powder)

CAS No: 7440-67-7
RTECS No: ZH7070000
UN No: 2008
EC No: 040-001-00-3

Zr
Atomic mass: 91.2

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible. Many reactions may cause fire or explosion.	NO open flames.	Dry sand, 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	See EFFECTS OF LONG-TERM OR REPEATED EXPOSURE.	PREVENT DISPERSION OF DUST!
Inhalation		Local exhaust or breathing protection.	Fresh air, rest.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. 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: 4.2 UN Pack Group: I

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-42GS4-I+II+III	See Chemical Dangers.

IMPORTANT DATA

Physical State; Appearance
HARD, LUSTROUS, GREYISH WHITE FLAKES OR GREY AMORPHOUS POWDER

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

Chemical dangers
Reacts violently with borax, carbon tetrachloride when heated. Reacts explosively when heated with alkali metal hydroxides.

Occupational exposure limits
TLV: 5 mg/m³ as TWA; 10 mg/m³ as STEL; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK: (Inhalable fraction) 1 mg/m³; sensitization of respiratory tract and skin (Sah); Peak limitation category: I(1); Pregnancy risk group: IIc; (DFG 2004).

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of short-term exposure
May cause mechanical irritation to the eyes.

Effects of long-term or repeated exposure
Lungs may be affected by repeated or prolonged exposure to dust particles.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 3577°C Melting point: 1857°C Relative density (water = 1): 6.5 Solubility in water: none

NOTES

Other UN numbers: 1358 Zirconium powder; wetted; hazard class 4.1, packaging group II; 1932 Zirconium scrap, hazard class 4.2, packaging group III; 2009 Zirconium, dry, finished metal sheets, wire, strip, hazard class 4.2, packaging group III; 2858 Zirconium, metal sheets, 18-254 microns, hazard class 4.1, packaging group III. Pure Zirconium sponge is pyrophoric and violently explosive when impure.

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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