Safety Statements: Human poison by intramuscular route. Experimental poison by intramuscular, intraperitoneal, subcutaneous, and intravenous routes. Mildly toxic by ingestion. An experimental teratogen. Human systemic effects by intramuscular route: convulsions or effect on seizure threshold, change in motor activity, change in kidney tubules, and urine volume decrease or anuria. Experimental reproductive effects. Used as an antibiotic. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Na2O.