4-Pyridinol, 3,5-dichloro-2,6-dimethyl-
RTECS #
UU7711500
CAS #
Updated
September 2013
Molecular Weight
192.05
Molecular Formula
C7H7Cl2NO
Synonyms
3,5-Dichloro-2,6-dimethyl-4-pyridinol
Clopidol
Clopidol (ACGIH:OSHA)
Coccidiostat C
Coyden
Coyden 25
Lerbek
Methylchloropindol
Methylchlorpindol
Meticlorpindol
Clopidol
Clopidol (ACGIH:OSHA)
Coccidiostat C
Coyden
Coyden 25
Lerbek
Methylchloropindol
Methylchlorpindol
Meticlorpindol
Acute Toxicity Data and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| oral/guinea pig | lethal dose (50 percent kill): >8 gm/kg | 85INA8 6,324,1991 | |
| oral/rabbit | lethal dose (50 percent kill): >8 gm/kg | 85INA8 6,324,1991 | |
| oral/rat | lethal dose (50 percent kill): 18 gm/kg | 85KYAH 11,375,1989 |
Reviews
| Organization | Standard | Reference |
|---|---|---|
| American Conference of Governmental Industrial Hygienists (ACGIH) | Threshold Limit Value-time-weighted average 3 ppm (inhal, vapor) | DTLVS* TLV/BEI,2013 |
| American Conference of Governmental Industrial Hygienists (ACGIH) | Threshold Limit Value-Not classifiable as a human carcinogen | DTLVS* TLV/BEI,2013 |
| TOXICOLOGY REVIEW | TOLED5 142,207,2003 |
Standards and Regulations
| Organization | Standard | Reference |
|---|---|---|
| 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 10 mg/m3, JUL2008 | |
| Occupational Exposure Limit-BELGIUM | time-weighted average 10 mg/m3, MAR2002 | |
| Occupational Exposure Limit-DENMARK | time-weighted average 10 mg/m3, MAY2011 | |
| Occupational Exposure Limit-FRANCE | VME 10 mg/m3, FEB2006 | |
| Occupational Exposure Limit-ICELAND | time-weighted average 10 mg/m3, NOV2011 | |
| Occupational Exposure Limit-KOREA | time-weighted average 10 mg/m3, short term exposure limit 20 mg/m3, 2006 | |
| Occupational Exposure Limit-MEXICO | time-weighted average 10 mg/m3;short term exposure limit 20 mg/m3, 2004 | |
| Occupational Exposure Limit-NEW ZEALAND | time-weighted average 10 mg/m3, JAN2002 | |
| Occupational Exposure Limit-PERU | time-weighted average 10 mg/m3, JUL2005 | |
| Occupational Exposure Limit-SWITZERLAND | MAK-week 10 mg/m3, JAN2011 | |
| Occupational Exposure Limit-THE NETHERLANDS | MAC-TGG 10 mg/m3, 2003 | |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) | 8H time-weighted average 15 mg/m3, total dust | CFRGBR 29,1926.55,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) | 8H time-weighted average 5 mg/m3, respirable fraction | CFRGBR 29,1926.55,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) | 8H time-weighted average 15 mg/m3, total dust | CFRGBR 29,1910.1000,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) | 8H time-weighted average 5 mg/m3, respirable fraction | CFRGBR 29,1910.1000,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) | 8H time-weighted average 15 mg/m3, total dust | CFRGBR 29,1915.1000,1993 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) | 8H time-weighted average 5 mg/m3, respirable fraction | CFRGBR 29,1915.1000,1993 |
NIOSH Documentation and Surveillance
| Organization | Standard | Reference |
|---|---|---|
| National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CLOPIDOL, respirable fraction-air | 10H time-weighted average 5 mg/m3 | NIOSH* DHHS #95-121,1995 |
| National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CLOPIDOL, total dust-air | 10H time-weighted average 10 mg/m3;short term exposure limit 20 mg/m3 | NIOSH* DHHS #95-121,1995 |
Page last reviewed: November 16, 2018
Content
source: National Institute for Occupational Safety and Health