Do not eat, drink, or smoke during work. Rinse mouth, and refer for medical attention. The substance decomposes on heating producing toxic fumes of chlorine and mercury, or on exposure to sunlight producing metallic mercury and mercuric chloride. Reacts with bromides, iodides, sulfates, sulfites, carbonates, alkali chlorides, hydroxides, cyanides, lead salts, silver salts, soap, sulfides, copper salts, hydrogen peroxide, lime water, iodoform, ammonia, iodine. The substance irritates the eyes.
Medical observation is indicated.
The substance may have effects on the kidneys. The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.