This WISER content is available in multiple languages.
Non-Human Toxicity Values
LC50 Rat inhalation 3778 mg/cu m (10 sec)
International Programme on Chemical Safety; Concise International Chemical Assessment Document 61: Hydrogen Cyanide and Cyanides: Human Health Aspects (2004) Available from, as of January 5, 2018: <http://www.inchem.org/documents/cicads/cicads/cicad61.htm/>.
LC50 Rat inhalation 1471 mg/cu m (1 min)
International Programme on Chemical Safety; Concise International Chemical Assessment Document 61: Hydrogen Cyanide and Cyanides: Human Health Aspects (2004) Available from, as of January 5, 2018: <http://www.inchem.org/documents/cicads/cicads/cicad61.htm/>.
LC50 Rat inhalation 493 mg/cu m (5 min)
International Programme on Chemical Safety; Concise International Chemical Assessment Document 61: Hydrogen Cyanide and Cyanides: Human Health Aspects (2004) Available from, as of January 5, 2018: <http://www.inchem.org/documents/cicads/cicads/cicad61.htm/>.
LC50 Rat inhalation 142 ppm/30 min
Verschueren, K. Handbook of Environmental Data of Organic Chemicals. 2nd ed. New York, NY: Van Nostrand Reinhold Co., 1983. 742.
LC50 Rat inhalation 173 mg/cu m (30 min)
International Programme on Chemical Safety; Concise International Chemical Assessment Document 61: Hydrogen Cyanide and Cyanides: Human Health Aspects (2004) Available from, as of January 5, 2018: <http://www.inchem.org/documents/cicads/cicads/cicad61.htm/>.
LC50 Rat inhalation 158 mg/cu m (60 min)
International Programme on Chemical Safety; Concise International Chemical Assessment Document 61: Hydrogen Cyanide and Cyanides: Human Health Aspects (2004) Available from, as of January 5, 2018: <http://www.inchem.org/documents/cicads/cicads/cicad61.htm/>.
LC50 Mouse inhalation 169 ppm/30 min
O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006. 830.
LC50 Dog inhalation 300 ppm/3 min
O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006. 830.
LD50 Rat sc 3700 ug/kg
ITII. Toxic and Hazarous Industrial Chemicals Safety Manual. Tokyo, Japan: The International Technical Information Institute, 1982. 273.
