Cyanogen (C2N2)
RTECS #
GT1925000
CAS #
Updated
September 2013
Molecular Weight
52.04
Molecular Formula
C2N2
Synonyms
Carbon nitride
Cyanogen
Cyanogen (ACGIH:OSHA)
Cyanogene (French)
Dicyan
Dicyanogen
Ethanedinitrile (9CI)
Nitriloacetonitrile
Oxalic acid dinitrile
Oxalic nitrile
Oxalonitrile
Oxalyl cyanide
RCRA waste number P031
Cyanogen
Cyanogen (ACGIH:OSHA)
Cyanogene (French)
Dicyan
Dicyanogen
Ethanedinitrile (9CI)
Nitriloacetonitrile
Oxalic acid dinitrile
Oxalic nitrile
Oxalonitrile
Oxalyl cyanide
RCRA waste number P031
Skin and Eye Irritation and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| eye /human | 16 ppm/6M | AIHAAP 21,121,1960 |
Acute Toxicity Data and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| inhalation/human | lowest published toxic concentration: 16 ppm | Eye: Conjunctiva irritation Olfaction: Change in olfactory nerve | AIHAAP 21,121,1960 |
| inhalation/rat | lethal concentration (50 percent kill): 350 ppm/1H | Lung, Thorax, or Respiration: Respiratory obstruction Eye: Lacrimation Behavioral: Somnolence (general depressed activity) | AIHAAP 21,121,1960 |
| subcutaneous/Dog | lowest published lethal dose: 15 mg/kg | AIPTAK 3,77,1897 | |
| subcutaneous/frog | lowest published lethal dose: 43 mg/kg | AIPTAK 3,77,1897 | |
| subcutaneous/pigeon | lowest published lethal dose: 9 mg/kg | Behavioral: Convulsions or effect on seizure threshold | AIPTAK 3,77,1897 |
| subcutaneous/rabbit | lowest published lethal dose: 13 mg/kg | Behavioral: Convulsions or effect on seizure threshold | AIPTAK 3,77,1897 |
Other Multiple Dose Data and References
| Route/Organism | Dose | Effect | Reference |
|---|---|---|---|
| inhalation/rat | lowest published toxic concentration: 25 ppm/6H/26W- intermittent | Nutritional and Gross Metabolic: Weight loss or decreased weight gain | JEPOEC 5(4/5),151,1984 |
Reviews
| Organization | Standard | Reference |
|---|---|---|
| American Conference of Governmental Industrial Hygienists (ACGIH) | Threshold Limit Value-time-weighted average 10 ppm | DTLVS* TLV/BEI,2013 |
| TOXICOLOGY REVIEW | HUTOX* -,661,1996 |
Standards and Regulations
| Organization | Standard | Reference |
|---|---|---|
| Mine Safety and Health Administration (MSHA) STANDARD | air time-weighted average 10 ppm | DTLWS* 3,14,1973 |
| 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 10 ppm (20 mg/m3), JAN1993 | |
| Occupational Exposure Limit-AUSTRALIA | time-weighted average 10 ppm (21 mg/m3), JUL2008 | |
| Occupational Exposure Limit-AUSTRIA | MAK-TMW 10 ppm (22 mg/m3);KZW 50 ppm (110 mg/m3), skin, 2007 | |
| Occupational Exposure Limit-BELGIUM | time-weighted average 10 ppm (21 mg/m3), MAR2002 | |
| Occupational Exposure Limit-DENMARK | time-weighted average 10 ppm (20 mg/m3), MAY2011 | |
| Occupational Exposure Limit-FINLAND | short term exposure limit 10 ppm (22 mg/m3), NOV2011 | |
| Occupational Exposure Limit-FRANCE | VME 2 ppm (4 mg/m3), VLE 10 ppm (20 mg/m3), FEB2006 | |
| Occupational Exposure Limit-GERMANY | MAK 5 ppm (11 mg/m3), 2011 | |
| Occupational Exposure Limit-ICELAND | time-weighted average 10 ppm (20 mg/m3), NOV2011 | |
| Occupational Exposure Limit-KOREA | time-weighted average 10 ppm (20 mg/m3), 2006 | |
| Occupational Exposure Limit-MEXICO | time-weighted average 10 ppm (20 mg/m3), 2004 | |
| Occupational Exposure Limit-NEW ZEALAND | time-weighted average 10 ppm (21 mg/m3), JAN2002 | |
| Occupational Exposure Limit-NORWAY | time-weighted average 10 ppm (22 mg/m3), JAN1999 | |
| Occupational Exposure Limit-PERU | time-weighted average 10 ppm (21 mg/m3), JUL2005 | |
| Occupational Exposure Limit-SWITZERLAND | MAK-week 5 ppm (11 mg/m3), KZG-week 10 ppm (22 mg/m3), skin, JAN2011 | |
| Occupational Exposure Limit-THE NETHERLANDS | MAC-TGG 20 mg/m3, 2003 | |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) | 8H time-weighted average 10 ppm | CFRGBR 29,1926.55,1994 |
| Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) | 8H time-weighted average 10 ppm | CFRGBR 29,1915.1000,1993 |
NIOSH Documentation and Surveillance
| Organization | Standard | Reference |
|---|---|---|
| National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CYANOGEN-air | 10H time-weighted average 10 ppm | NIOSH* DHHS #95-121,1995 |
Status in Federal Agencies
| Organization | Reference |
|---|---|
| ATSDR TOXICOLOGY PROFILE (NTIS** PB/98/101207/AS) | |
| EPA TSCA Section 8(b) CHEMICAL INVENTORY | |
| On EPA IRIS database |
Page last reviewed: November 16, 2018
Content
source: National Institute for Occupational Safety and Health