Hafnium
RTECS #
MG4600000
CAS #
Updated
September 2013
Molecular Weight
178.49
Molecular Formula
Hf
Synonyms
Hafnium (ACGIH:OSHA)
Reviews
| Organization | Standard | Reference |
|---|---|---|
| American Conference of Governmental Industrial Hygienists (ACGIH) | Threshold Limit Value-time-weighted average 0.5 mg/m3 | DTLVS* TLV/BEI,2013 |
| TOXICOLOGY REVIEW | IHFMAU -,-,1954 |
Standards and Regulations
| Organization | Standard | Reference |
|---|---|---|
| Mine Safety and Health Administration (MSHA) STANDARD-air | time-weighted average 0.5 mg/m3 | DTLVS* 3,123,1971 |
| Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV; | ||
| Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV | ||
| Occupational Exposure Limit-AUSTRALIA | time-weighted average 0.5 mg/m3, JUL2008 | |
| Occupational Exposure Limit-AUSTRIA | MAK-TMW 0.5 mg/m3;KZW 5 mg/m3, inhal, 2007 | |
| Occupational Exposure Limit-BELGIUM | time-weighted average 0.5 mg/m3, MAR2002 | |
| Occupational Exposure Limit-DENMARK | time-weighted average 0.5 mg/m3 (dust), MAY2011 | |
| Occupational Exposure Limit-FINLAND | time-weighted average 0.5 mg/m3, NOV2011 | |
| Occupational Exposure Limit-FRANCE | VME 0.5 mg/m3, FEB2006 | |
| Occupational Exposure Limit-ICELAND | time-weighted average 0.5 mg/m3 (dust), NOV2011 | |
| Occupational Exposure Limit-KOREA | time-weighted average 0.5 mg/m3, 2006 | |
| Occupational Exposure Limit-MEXICO | time-weighted average 0.5 mg(Hf)/m3;short term exposure limit 1.5 mg(Hf)/m3 (metal), 2004 | |
| Occupational Exposure Limit-NEW ZEALAND | time-weighted average 0.5 mg/m3, JAN2002 | |
| Occupational Exposure Limit-PERU | time-weighted average 0,5 mg/m3, JUL2005 | |
| Occupational Exposure Limit-POLAND | MAC(time-weighted average) 0.5 mg/m3, JAN1999 | |
| Occupational Exposure Limit-SWITZERLAND | MAK-week 0.5 mg/m3, inhal, JAN2011 | |
| Occupational Exposure Limit-THE NETHERLANDS | MAC-TGG 0.5 mg/m3, 2003 | |
| Occupational Exposure Limit-THE PHILIPPINES | time-weighted average 0.5 mg/m3, JAN1993 | |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) | 8H time-weighted average 0.5 mg/m3 | CFRGBR 29,1926.55,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors) | 8H time-weighted average 0.5 mg/m3 | CFRGBR 41,50-204.50,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) | 8H time-weighted average 0.5 mg/m3 | CFRGBR 29,1910.1000,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) | 8H time-weighted average 0.5 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 HAFNIUM-air | 10H time-weighted average 0.5 mg/m3 | NIOSH* DHHS #92-100,1992 |
| National Occupational Exposure Survey 1983 | Hazard Code 35755; Number of Industries 1; Total Number of Facilities 3; Number of Occupations 7; Total Number of Employees Exposed 1004; Total Number of Female Employees Exposed 3 | |
| National Occupational Hazard Survey 1974 | Hazard Code 35755; Number of Industries 16; Total Number of Facilities 331; Number of Occupations 16; Total Number of Employees Exposed 3335 |
Status in Federal Agencies
| Organization | Reference |
|---|---|
| EPA TSCA Section 8(b) CHEMICAL INVENTORY | |
| OSHA ANALYTICAL METHOD #ID121 |
Page last reviewed: November 16, 2018
Content
source: National Institute for Occupational Safety and Health