Tantalum
RTECS #
WW5505000
CAS #
Updated
July 2013
Molecular Weight
180.95
Molecular Formula
Ta
Synonyms
Tantalum, metal (ACGIH:OSHA)
Tantalum-181
Tantalum-181
Tumorigenic Data and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| implant/rat | lowest published toxic dose: 3760 mg/kg | Tumorigenic: Equivocal tumorigenic agent by RTECS criteria Tumorigenic: Tumors at site of application | CNREA8 16,439,1956 |
Acute Toxicity Data and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| intratracheal/rat | lowest published toxic dose: 250 mg/kg | Lung, Thorax, or Respiration: Structural or functional change in trachea or bronchi Lung, Thorax, or Respiration: Emphysema | VCVN5* -,147,1993 |
| oral/mouse | lethal dose (50 percent kill): 595 mg/kg | VCVN5* -,147,1993 |
Standards and Regulations
| Organization | Standard | Reference |
|---|---|---|
| Mine Safety and Health Administration (MSHA) STANDARD-air | time-weighted average 5 mg/m3 | DTLVS* 3,243,1971 |
| 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 Egypt | time-weighted average 0.1 mg/m3, JAN1993 | |
| Occupational Exposure Limit-AUSTRALIA | time-weighted average 5 mg/m3 (dust), JUL2008 | |
| Occupational Exposure Limit-AUSTRIA | MAK-TMW 5 mg/m3, inhal, 2007 | |
| Occupational Exposure Limit-BELGIUM | time-weighted average 5 mg/m3, MAR2002 | |
| Occupational Exposure Limit-DENMARK | time-weighted average 5 mg(Ta)/m3, MAY2011 | |
| Occupational Exposure Limit-FRANCE | VME 5 mg/m3, FEB2006 | |
| Occupational Exposure Limit-GERMANY | MAK 1.5 mg/m3, resp, 2011 | |
| Occupational Exposure Limit-GERMANY | MAK 4 mg/m3, inhal, 2011 | |
| Occupational Exposure Limit-ICELAND | time-weighted average 5 mg/m3, dust, NOV2011 | |
| Occupational Exposure Limit-MEXICO | time-weighted average 5 mg/m3;short term exposure limit 10 mg/m3, 2004 | |
| Occupational Exposure Limit-NEW ZEALAND | time-weighted average 5 mg/m3, JAN2002 | |
| Occupational Exposure Limit-PERU | time-weighted average 5 mg/m3, JUL2005 | |
| Occupational Exposure Limit-POLAND | MAC(time-weighted average) 5 mg/m3, JAN1999 | |
| Occupational Exposure Limit-RUSSIA | time-weighted average 10 mg/m3, JUN2003 | |
| Occupational Exposure Limit-SWITZERLAND | MAK-week 5 mg/m3, inhal, JAN2011 | |
| Occupational Exposure Limit-THE NETHERLANDS | MAC-TGG 5 mg/m3, 2003 | |
| Occupational Exposure Limit-THE PHILIPPINES | time-weighted average 5 mg/m3, JAN1993 | |
| Occupational Exposure Limit-UNITED KINGDOM | time-weighted average 5 mg/m3;short term exposure limit 10 mg/m3, OCT2007 | |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) | 8H time-weighted average 5 mg/m3 | CFRGBR 29,1926.55,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors) | 8H time-weighted average 5 mg/m3 | CFRGBR 41,50-204.50,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) | 8H time-weighted average 5 mg/m3 | CFRGBR 29,1910.1000,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) | 8H time-weighted average 5 mg/m3 | CFRGBR 29,1915.1000,1993 |
NIOSH Documentation and Surveillance
| Organization | Standard | Reference |
|---|---|---|
| National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO TANTALUM, metal/oxide dust-air | time-weighted average 5 mg/m3;short term exposure limit 10 mg/m3 | NIOSH* DHHS #92-100,1992 |
| National Occupational Exposure Survey 1983 | Hazard Code X2923; Number of Industries 1; Total Number of Facilities 26; Number of Occupations 3; Total Number of Employees Exposed 518; Total Number of Female Employees Exposed 155 | |
| National Occupational Exposure Survey 1983 | Hazard Code X4238; Number of Industries 1; Total Number of Facilities 2; Number of Occupations 1; Total Number of Employees Exposed 35; Total Number of Female Employees Exposed 21 | |
| National Occupational Exposure Survey 1983 | Hazard Code X5917; Number of Industries 1; Total Number of Facilities 3; Number of Occupations 1; Total Number of Employees Exposed 400; Total Number of Female Employees Exposed 400 | |
| National Occupational Exposure Survey 1983 | Hazard Code 71095; Number of Industries 13; Total Number of Facilities 275; Number of Occupations 13; Total Number of Employees Exposed 7063; Total Number of Female Employees Exposed 1255 | |
| National Occupational Hazard Survey 1974 | Hazard Code 71095; Number of Industries 2; Total Number of Facilities 28; Number of Occupations 5; Total Number of Employees Exposed 597 |
Status in Federal Agencies
| Organization | Reference |
|---|---|
| EPA TSCA Section 8(b) CHEMICAL INVENTORY | |
| EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001 |
Page last reviewed: November 16, 2018
Content
source: National Institute for Occupational Safety and Health