Degree of hazard for these reduced concentrations is not currently addressed in the available literature. Inhalation of vapors can cause coughing, choking, inflammation of the nose, throat, and upper respiratory tract, and in severe cases, pulmonary edema, circulatory failure, and death. Swallowing hydrochloric acid can cause immediate pain and burns of the mouth, throat, esophagus and gastrointestinal tract. May cause nausea, vomiting, and diarrhea, and in severe cases, death. Can cause redness, pain, and severe skin burns.
Concentrated solutions cause deep ulcers and discolor skin.
Vapors are irritating and may cause damage to the eyes. Contact may cause severe burns and permanent eye damage. Long term exposures seldom occur due to the corrosive properties of the acid. Persons with pre-existing skin disorders or eye problems or impaired respiratory function may be more susceptible to the effects of the substance. Measures First aid procedures given apply to concentrated solutions.