Symptoms from excessive inhalation of dust may include coughing and difficult breathing.
Excessive contact is known to cause damage to the nasal septum.
Sodium carbonate is only slightly toxic, but large doses may be corrosive to the gastro-intestinal tract where symptoms may include severe abdominal pain, vomiting, diarrhea, collapse and death. Excessive contact may cause irritation with blistering and redness. Solutions may cause severe irritation or burns. Contact may be corrosive to eyes and cause conjuctival edema and corneal destruction. Risk of serious injury increases if eyes are kept tightly closed.