What is the estimated lethal dose of sodium chloride?
The estimated lethal dose of sodium chloride is 0.75-3 g/kg. Soy sauce contains 17-18% sodium chloride and ingestion of large quantities of soy sauce can result in rapid hypernatremia and death if not rapidly identified and corrected.
Survival of Acute Hypernatremia Due to Massive Soy Sauce Ingestion. JEM 2013; 45(2): 228-231.