Over exposure may cause local irritation to the mucous membrane. It can be absorbed through broken skin or lungs. High concentration in blood may cause thyroid disorder, renal disturbances, acidosis and electrolyte disturbances. Emergency first aid: eye- immediately wash with running water for 5 minutes. Get medical attention if irritation persists. Skin- avoid prolonged contact with excess wet solution. If irritation develops, get medical attention. Ingestion- if swallowed, do not induce vomiting. Drink several glasses of water or milk. Obtain immediate medical attention. Inhale- if fumes cause respiratory discomfort moves to fresh air.