TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 82 mg/kg TOXIC EFFECTS : Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory depression REFERENCE : APSCAX Acta Physiologica Scandinavica. (Karolinska Institutet, S-10401 Stockholm, Sweden) V.1- 1940- Volume(issue)/page/year: 40,338,1957