International Chemical Safety Cards

ZIRCONIUM ICSC: 1405
World Health Organization (WHO) International Labour Organization (ILO) United Nations Environmental Programme (UNEP) European Commission National Institute for Occupational Safety and Health (NIOSH)
(unstable powder)
Zr
Atomic mass: 91.2
4 Spontaneously Combustible placard ICSC #    1405
CAS #     7440-67-7
RTECS # ZH7070000
UN #        2008
EC #         040-001-00-3
October 27, 2004 Validated
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 STORAGE 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.
See Chemical Dangers.

F symbol
R: 15-17
S: 2-7/8-43
UN Hazard Class: 4.2
UN Packing Group: I
SEE IMPORTANT INFORMATION ON BACK
ICSC: 1405 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

ZIRCONIUM ICSC: 1405
I

M

P

O

R

T

A

N

T


D

A

T

A
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/m as TWA; 10 mg/m as STEL; A4 (not classifiable as a human carcinogen); (ACGIH 2008).
MAK: (Inhalable fraction) 1 mg/m; sensitization of respiratory tract and skin (Sah);
Peak limitation category: I(1); Pregnancy risk group: D;
(DFG 2008).
OSHA PEL: TWA 5 mg/m3
NIOSH REL*: TWA 5 mg/m3 ST 10 mg/m3 *Note: The REL applies to all zirconium compounds (as Zr) except Zirconium tetrachloride.
NIOSH IDLH: 50 mg/m3 (as Zr) See: IDLH INDEX


ROUTES OF EXPOSURE:


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

N O T E S
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.
Transport Emergency Card: TEC (R)-42GS4-I+II+III
Card has been partially updated in February 2009: see Occupational Exposure Limits.
ADDITIONAL INFORMATION


ICSC: 1405 ZIRCONIUM
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.