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Registry of Toxic Effects of Chemical Substances (RTECS)

Zirconium

RTECS #

ZH7070000

CAS #

7440-67-7

Updated

September 2013

Molecular Weight

91.22

Molecular Formula

Zr

Synonyms

Zircat
Zirconium (ACGIH:OSHA)
Zirconium metal, dry, chemically produced, finer than 20 mesh particle size (UN2008)

Other Multiple Dose Data and References

Route/OrganismDoseEffectReference
inhalation/hamster lowest published toxic concentration: 30 mg/m3/72W- intermittentLung, Thorax, or Respiration: Fibrosis (interstitial)

Lung, Thorax, or Respiration: Tumors

Lung, Thorax, or Respiration: Other changes
8COLD* 1,480,1993
inhalation/rat lowest published toxic concentration: 30 mg/m3/48W- intermittentLung, Thorax, or Respiration: Fibrosis (interstitial)EPASR* 89-900000360
inhalation/rat lowest published toxic concentration: 30 mg/m3/96W- intermittentLung, Thorax, or Respiration: Other changes

Lung, Thorax, or Respiration: Tumors
EVHPAZ 102,207,1994
inhalation/rat lowest published toxic concentration: 30 mg/m3/96W- intermittentLung, Thorax, or Respiration: Fibrosis (interstitial)

Lung, Thorax, or Respiration: Other changes

Lung, Thorax, or Respiration: Tumors
8COLD* 1,480,1993

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 5 mg/m3;short term exposure limit 10 mg/m3DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-Not classifiable as a human carcinogenDTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 5 mg/m3DTLVS* 3,285,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-ARAB Republic of Egypttime-weighted average 5 mg/m3, JAN1993
Occupational Exposure Limit-AUSTRALIAtime-weighted average 5 mg/m3, short term exposure limit 10 mg/m3 (powder), JUL2008
Occupational Exposure Limit-AUSTRIAMAK-TMW 5 mg/m3, inhal, sen, 2007
Occupational Exposure Limit-BELGIUMtime-weighted average 5 mg/m3, short term exposure limit 10 mg/m3, MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 5 mg(Zr)/m3, MAY2011
Occupational Exposure Limit-HUNGARYtime-weighted average 5 mg(Zr)/m3, short term exposure limit 20 mg(Zr)/m3, SEP2000
Occupational Exposure Limit-ICELANDtime-weighted average 5 mg/m3, NOV2011
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 5 mg/m3, short term exposure limit 10 mg/m3, JAN2002
Occupational Exposure Limit-PERUtime-weighted average 5 mg/m3; short term exposure limit 10 mg/m3, JUL2005
Occupational Exposure Limit-POLANDMAC(time-weighted average) 5 mg/m3, MAC(short term exposure limit) 10 mg/m3, JAN1999
Occupational Exposure Limit-RUSSIAshort term exposure limit 6 mg/m3, JUN2003
Occupational Exposure Limit-SWITZERLANDMAK-week 5 mg/m3, inhal, JAN2011
Occupational Exposure Limit-THE NETHERLANDSMAC-TGG 5 mg/m3, 2003
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction)8H time-weighted average 5 mg(Zr)/m3CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors)8H time-weighted average 5 mg(Zr)/m3CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry)8H time-weighted average 5 mg(Zr)/m3CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards)8H time-weighted average 5 mg(Zr)/m3CFRGBR 29,1915.1000,1993

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO ZIRCONIUM COMPOUNDS-air10H time-weighted average 5 mg/m3;short term exposure limit 10 mg/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code 77265; Number of Industries 61; Total Number of Facilities 4245; Number of Occupations 66; Total Number of Employees Exposed 64142; Total Number of Female Employees Exposed 1956
National Occupational Hazard Survey 1974Hazard Code 77265; Number of Industries 17; Total Number of Facilities 1460; Number of Occupations 23; Total Number of Employees Exposed 11308

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
NIOSH Analytical Method, 1994: Elements by ICP, 7300
NIOSH Analytical Method, 1994: Elements in blood or tissue, 8005
OSHA ANALYTICAL METHOD #ID121
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